ISU 128 128 kbps ISDN Service Unit USER MANUAL Part Numbers 1202029L2 115 VAC 1202029L3 115 VAC with V.34 Modem Option 61202.
Trademarks: DMS-100 is a trademark of Northern Telecom. ISU is trademark of ADTRAN, Incorporated. Macintosh is a registered trademark of Apple Computer, Incorporated. Stac is a registered trademark and LZS is a trademark of Stac Electronics. Windows is a registered trademark of Microsoft Corporation. 5ESS is a registered trademark of AT&T. Windows® 95 is a registered trademark of Microsoft Corporation. MNP® is a registered trademark of Microcom, Incorporated. 901 Explorer Boulevard P.O.
FCC regulations require that the following information be provided to the customer in this manual. 1. If your telephone equipment ( ISU 128) causes harm to the telephone network, the telephone company may discontinue your service temporarily. If possible, they will notify you in advance. But if advance notice isn’t practical, you will be notified as soon as possible. You will be advised of your right to file a complaint with the FCC. 2.
FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY INTERFERENCE STATEMENT FCC ID: HDC1202029TL This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential environment.
CANADIAN EMISSIONS REQUIREMENTS This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus as set out in the interference-causing equipment standard entitled "Digital Apparatus," ICES-003 of the Department of Communications.
Table of Contents Chapter 1. Understanding ISDN and the ISU 128 ..................................................... ISDN Overview .................................................................................................................. The ADTRAN ISU 128....................................................................................................... ISU 128 Interoperability ....................................................................................................
Table of Contents Near-End Block Errors/Far-End Block Errors (NEBE/FEBE) .............................. 22 Software Version.......................................................................................................... 22 Chapter 6. Configuration ................................................................................................. Dial Line Operation............................................................................................................ Switch Protocol ...........
Table of Contents Leased Line Service............................................................................................................ Clock Mode: Slave/Master ....................................................................................... Channel rate ................................................................................................................. DTE OPTIONS..................................................................................................................
Table of Contents Dial PPP* ............................................................................................................... V34 115.2 async* ................................................................................................... Dial 57.6 asyn* ...................................................................................................... Dial 115.2 asyn* .................................................................................................... Fallback 57.6k* .
Table of Contents Environmental ............................................................................................... 85 Physical ........................................................................................................... 85 Power .............................................................................................................. 85 Appendix A. AT Commands........................................................................................... 87 Appendix B.
Table of Contents vi ISU-128 User Manual 61202.
List of Figures Figure 1-1: Figure 1-2: Figure 1-3: Figure 4-1: Figure 4-2: Figure 5-1: Figure 5-2: Figure 5-3: Figure 6-1: Figure 6-2: Figure 6-3: Figure 6-4: Figure 6-5: Figure 6-6: Figure 6-7: Figure 6-8: Figure 6-9: Figure 6-10: Figure 6-11: Figure 6-12: Figure 6-13: Figure 6-14: Figure 6-15: Figure 6-16: Figure 6-17: Figure 6-18: Figure 7-1: Figure 7-2: Figure 7-3: Figure 7-4: Figure 7-5: Figure 7-6: Figure 7-7: Figure 8-1: Figure 9-1: Figure 9-2: 61202.029L2-1 ISU 128 Rear Panel .....................
List of Figures Figure 10-1: Figure 10-2: Figure 10-3: Figure 10-4: Figure 10-5: Figure 10-6: Figure E-1: Figure E-2: Figure E-3: Figure E-4: Figure E-5 viii Remote Configuration Menu Path ...................................................... 72 Remote Configuration Screen .............................................................. 72 Remote Unit Configuration Screen ..................................................... 73 Test Menu Path ...............................................................
List of Tables Table 1-A: Table 1-B: Table 3-A: Table 7-A: Table E-A: Table E-B: Table E-C: Table E-D: Table E-E: Table E-F: 61202.029L2-1 DTE Indicators ....................................................................................... 3 Recommended Operating Modes ....................................................... 7 Maximum DTE Interface Cable Lengths............................................ 12 Rate Adaption Protocols.......................................................................
List of Tables xii ISU 128 User Manual 61202.
Chapter 1 Understanding ISDN and the ISU 128 ISDN OVERVIEW The Integrated Services Digital Network (ISDN) is a public or private switched digital network. ISDN is an international standard for digital communications, allowing a full range of enhanced services supporting voice, data, and image applications through standard interfaces over a single telephone wire. ISDN provides a means of integrating these services and modernizing communication networks for information movement and management efficiency.
Chapter 1. Understanding ISDN and the ISU 128 over ISDN. The ISU 128 may be viewed as an ISDN dial modem that allows cost-effective high-speed data transmission at rates up to 128 kbps. The ISU 128 has one RJ-45 jack available on the rear panel for network connection (see Figure 1-1). The RJ-45 jack labelled ISDN IFC is for ISDN Basic Rate. ISDN Basic Rate service divides a standard telephone line into three digital channels capable of simultaneous voice and data transmission.
Chapter 1. Understanding ISDN and the ISU 128 • With DTR asserted, some bridges/routers raise DTR when bandwidth on their dedicated line is exceeded. In high-traffic times, this allows the ISU 128 to dial out over the ISDN for an extra 128 kbps of bandwidth-on-demand. The ISU 128 front panel accommodates a 2-line, 16 character LCD display. Seven LED indicators monitor data flow and display the status of key DTE interface leads as described in Table 1-A.
Chapter 1. Understanding ISDN and the ISU 128 ISU 128 INTEROPERABILITY Telephone networks are evolving from analog technologies to digital technologies such as ISDN. This transition is time-consuming and costly for the telephone companies. Upgrading all locations and facilities is a lengthy process. The ISU 128 bridges this transition by supporting communications with existing and future network services and equipment.
DTE RS CS TD 61202.
Chapter 1. Understanding ISDN and the ISU 128 RECOMMENDED OPERATING PROTOCOLS The ISU 128 supports a wide range of operating modes. Many combinations of circuit type, protocol, and data rate may be selected. However, only the combinations shown in Table 1-B are recommended. As noted in Table 1-B, all asynchronous rates will support flow control. Flow control is required when operating at 115,200 bps using PPP (Point-to-Point Protocol), V.120, SAP (Simple Adtran Protocol), or asynchronous bonding.
Chapter 1. Understanding ISDN and the ISU 128 Table 1-B Recommended Operating Modes Call Type DIAL-64K Protocol BONDING Clear Chan PPP V.110 V.120 Tlink SAP PPP async-sync BONDING V.110 V.120 Tlink SAP DIAL-56K BONDING Clear Chan PPP V.110 V.120 Tlink PPP async-sync BONDING DSU 57.6 V.110 V.120 Tlink DIAL-64K*2 BONDING MPPP MPPP BONDING DIAL-56K*2 BONDING MPPP MPPP BONDING LEASED 64K Clear Chan SAP DSU 57.6 SAP LEASED 128K Clear Chan SAP 1. 2. 3. 4. 5. 61202.
Chapter 1. Understanding ISDN and the ISU 128 8 ISU 128 User Manual 61202.
Chapter 2 ISDN Ordering Codes (IOCs) ORDERING ISDN USING IOCS The development of ISDN ordering codes (IOCs) simplifies the process of ordering ISDN service. The ISDN Solutions Group, a consortium of ISDN equipment vendors, service providers, and Bellcore, established these codes to represent predetermined line configurations for ISDN Basic Rate service for specific applications. ADTRAN and Bellcore have registered and tested eight generic IOCs. Of these, four are recommended for operation of the ISU 128.
Chapter 2.
Chapter 3 Installation After unpacking the unit, immediately inspect it for possible shipping damage. If damage is discovered, file a claim immediately with the shipping carrier, then contact ADTRAN Repair and Return Department (see the end of this manual). Ensure that a grounded, 115 VAC, 60 Hz receptacle is used to provide power. NETWORK CONNECTION The ISU 128 supports either dial or leased operation.
Chapter 3. Installation DTE DATA CONNECTION Data terminal equipment is connected to the ISU 128 by using either the RS530 interface, the V.35 interface, or EIA-232 interface on the rear panel of the ISU 128. The maximum recommended cable lengths are shown in Table 3-A. See the appendix Connector Pinouts for each interface pin assignments. Be sure to configure the menu option for the connector type used in your application.
Chapter 3. Installation MAINTENANCE INTERFACE The Maintenance Interface is available at 9600 bps, 8 data bits, no parity, asynchronous format, through the RS-366/Maintenance port. See the appendix Connector Pinouts for Maintenance port pin assignments. The VT 100 terminal or null modem can be connected to the RS-366/Maintenance port using an EIA-232 cable. This interface can be used to set internal S-registers, dial ISDN connections, and disconnect calls.
Chapter 3. Installation 14 ISU 128 User Manual 61202.
Chapter 4 Operation MENU NAVIGATION Four function keys on the left-hand side of the keypad allow the user to enter, exit, and scroll through the various menu branches. The four function keys are defined below. Enter Enters the selected item. Up Arrow Scrolls up a menu tree. Down Arrow Scrolls down a menu tree. Cancel Exits (back one level) from the current branch of the menu tree. For reading ease, function keys are represented in bold, initial caps text.
Chapter 4. Operation GETTING STARTED At power up, the front panel display is in the Current Status mode. This is the recommended resting place for the display as it shows the current operational status of the unit. For example, if the ISU 128 is not connected to the network, the Current Status menu displays ADTRAN ISU 128 Link Down. If the unit is connected to the network and functioning properly, it displays ADTRAN ISU 128 Ready.
Chapter 4. Operation VT 100 TERMINAL MENU SUPPORT When connected to an asynchronous VT 100 terminal or VT 100 terminal emulator, use the built-in ISU 128 menu system for configuration. To enter into the menus, type AT!V Enter. To go to a particular menu, simply press the hot keys for that menu.
Chapter 4. Operation Configuration Screen Once the unit is selected using the terminal interface, the display shows the Configuration Menu (see Figure 4-2). This screen shows the current configuration, line, and call status for the selected unit. See the chapter Configuration formore information about configuring the ISU 128. Figure 4-2 VT 100 Configuration Screen To configure the ISU 128 quickly and easily for most applications, see the chapter Quick Setup. 18 ISU 128 User Manual 61202.
Chapter 5 Testing TEST OPTIONS Pressing Ctl-T from any VT 100 terminal screen or selecting 2=TEST from the top of the menu tree on the front panel displays local testing options. Figure 5-1 shows the VT 100 terminal test screen and the menu tree is illustrated in Figure 5-2. Figure 5-1 VT 100 Test Screen 61202.
Chapter 5. Testing 1=Loopback DTE 2=Loopback Netw. 1=STATUS 2=TEST 3=CONFIG 4=DIAL 3=Loopback Proto 4=Loopback Remote 5=Test Remote 6=Lpbk Disable 7=NEBE/FEBE 0=Software Ver 1=No Rem Lpbks 2=DDS Accepted 3=V54 Accepted 4=DDS + V54 Accept Figure 5-2 Test Menu Tree Loopback DTE Loopback DTE causes the ISU DTE port to loop back toward user equipment. This allows performance of a bit error rate test (BERT) between the ISU 128 and the end user equipment to verify proper cable connection.
Chapter 5. Testing Loopback Remote Loopback Remote allows the ISU 128 to issue a V.54 in-band loopback command to a far-end unit while still accepting data from the DTE connector. This provides bit error rate testing of an entire link using an external BERT test set. To use this feature, both units must be configured for Clear Channel operation and the far-end unit must be able to respond to V.54 loopback commands. See the chapter Protocol Options to configure the unit for Clear Channel operation.
Chapter 5. Testing DDS+V54 Accept The ISU 128 responds to both DSU Latching Loopback commands (leased line mode only) and V.54 loopback commands. The ISU must be optioned for Clear Channel operation for DSU Latching and V.54 loopback commands to take effect. Near-End Block Errors/Far-End Block Errors (NEBE/FEBE) NEBE/FEBE allows the user to determine the quality of the network connection by viewing the number of near-end (NEBE) and far-end (FEBE) block errors occurring on the ISDN interface.
Chapter 6 Configuration DIAL LINE OPERATION This section explains how to configure the ISU 128 when using ISDN basic rate switched service. Figure 6-3 illustrates the entire CONFIG branch of the menu tree. The following are step-by-step procedures for configuring the unit for dial line operation, switch protocol, call type, terminal ID, dial options, auto answer, answer tone, connect timeout, and call screening. To dial calls over the ISDN, the unit must be configured for Dial Line.
Chapter 6. Configuration Figure 6-2 VT 100 Configuration Screen Switch Protocol Find out what kind of ISDN switch your local CO is using by asking the telephone administrator or telephone company representative. Configure the ISU 128 for either a Northern Telecom DMS-100®, AT&T 5ESS® switch, or a switch conforming to the National ISDN-1 standard (usually an AT&T 5ESS, NTI DMS-100, or Siemens EWSD). In the Far East, configure for the NEC switch.
Chapter 6. Configuration less than data service. A Speech call type does not guarantee an end-to-end digital connection with some local and long distance carriers. Audio Audio directs the call control software to request a 3.1 kHz audio circuit as the bearer capability for outgoing calls. The Audio option is used with an ISDN line configured for voice service. In some areas audio service is less expensive than data service. Selecting an Audio call type guarantees a digital end-to-end ISDN connection.
Chapter 6. Configuration When selecting a SPID, use the Up and Down arrows to choose between SPID 1 and SPID 2. Press Enter to select the SPID and use the keypad to enter the SPID number. While entering/editing a SPID, the Down arrow allows ou to backspace through the number string to correct mistakes. The Up arrow scrolls back to the last digit entered. To cancel a number, use the Down arrow to backspace through it and press Enter. Press Enter after entering each SPID.
Chapter 6: Configuration S ‘Buffer Display’ 1=Loopback DTE 2=Loopback Netw. 3=Loopback Proto 4=Loopback Remote 5=Test Remote 6=Lpbk Disable 7=NEBE/FEBE 8=Software Ver 1=Switch protocl 1=AT&T 5ESS 2= DMS-100 3=National ISDN1 4=NEC Switch 2=Call type 1=Speech 2=Audio 3=Data 56Kbps 4=Data 64Kbps 3=Terminal ID 1=No Rem Lpbks 2=DDS Accepted 3=V54 Accepted 4=DDS + V54 Accept 4=Dial options 5=Auto answer 1=Netw.
Chapter 6: Configuration 28 ISU 128 User Manual
Chapter 6. Configuration Dial options The ISU 128 can be configured to dial using the Front Panel, RS-366 port, AT Commands, or V.25 bis Commands. Figure 6-4 illustrates the menu tree. Front Panel To establish and disconnect calls from the front panel keypad, configure Dial options for Front Panel. See the section Front Panel Dialing Options for more detail. RS-366 To establish and disconnect calls using the RS-366 parallel dialing port, configure the unit for RS-366 dialing.
Chapter 6. Configuration 1 sec or EON The ISU 128 assumes the dial string is fully entered if more than one second elapses since the last digit was entered, or the unit receives the EON command. 2 sec or EON The ISU 128 assumes the dial string is fully entered if more than two seconds elapse since the last digit was entered, or the unit receives the EON command.
Chapter 6. Configuration To exit the data mode and enter the command mode, the asynchronous DTE device must transmit a proper escape sequence to the ISU 128. A specified time delay must occur between the last data character and the first escape sequence character. This is the guard time delay, and it can be changed by writing a value to the S12 register. The default value for the guard time is one second.
Chapter 6. Configuration Reading S-Registers Type ATS followed by the number of the S-register to be read followed by a question mark and press Enter. ATS0? Reading S-Register Strings The ISU 128 uses S-register strings to store strings of digits for stored phone numbers, SPIDs, etc. Type ATSS followed by the number of the string S-register to be read followed by a question mark and press Enter.
Chapter 6. Configuration V.25 bis Configuring the ISU 128 for V.25 bis (see Figure 6-5) enables in-band dialing over a DTE interface using asynchronous or synchronous V.25 bis commands. V.25 bis can be used to establish and end a call. Disconnecting calls can also be done from the front panel (as previously described) or from the far-end unit. V.
Chapter 6. Configuration When using stored numbers, V.25 bis accesses stored numbers 1 through 9 used by front panel dialing. See Front Panel Dialing Options. Auto Answer should be set to Disabled (shown in Figure 6-6) if V.25 bis is in control of answering incoming calls with the CIC/DIC commands, since the other settings for Auto Answer will override V.25 control of the answer function. 1=Switch protocl 2=Call type 1=Netw.
Chapter 6. Configuration The setting in Figure 6-8 allows for V.25 bis messages in asynchronous (start/ stop) data format. 1=Switch protocl 2=Call type 1=Netw. options 3=CONFIG 1=Dial Line 3=Terminal ID 2=Leased Line 4=Dial options 2=DTE options 5=Auto answer 3=Protocol 6=Answer tone 4=Quick setup 7=Connect Timout 5=Remote config 8=Call Screening 1=Front Panel 2=RS-366 3=AT commands 4=V.25 1=V.25 HDLC 5=Disabled 2=V.25 ASYNC 3=V.25 BISYNC 4=V.25 HDLC FLAG Figure 6-8 V.
Chapter 6. Configuration Auto Answer The ISU 128 auto answer parameter can be configured in one of three ways: Disabled, Enabled, or Dump all calls. Disabled When Disabled is selected, the ISU 128 will not automatically answer an incoming call. The AT answer command (ATA) must be issued to the ISU 128 before it accepts the incoming call. The ringing call can be dumped using the Hang up line command, or answered using the Answer Call command. These commands are listed under the Dial branch of the main tree.
Chapter 6. Configuration Answer Tone The Answer tone option (shown in Figure 6-9) enables the transmission of a modem answer tone at the start of voice and audio calls. The purpose of this tone is to disable echo suppression and echo cancelling on the circuit in order to get a clear digital circuit. This may be necessary on some long distance circuits. The specifics of the tone are 4 seconds, 2100 Hz at a -10 dB level, with phase reversals every 475 ms. 1=Switch protocl 2=Call type 1=Netw.
Chapter 6. Configuration Connect Timeout Connect Timout sets the length of time that the ISU 128 waits for a far-end unit to answer an outgoing call. These choices are illustrated in Figure 6-10. 1=Switch protocl 2=Call type 1=Netw.
Chapter 6. Configuration The ISU 128 displays the Call ID for all dumped calls in the Status buffer. See the section Status Buffer for more information on the Status buffer. Because different switches handle calls and Call ID differently, use the following procedure to determine if a seven or ten digit Call ID (phone number) should be stored: 1. 2. 3. 4. 5. 61202.029L2-1 Select Ansr if SN0. . .9 under Call Screening. Store your seven digit number in SN0.
Chapter 6. Configuration LEASED LINE SERVICE This section explains how to configure the ISU 128 when using a 2B1Q leased digital service or a service that provides a permanent connection between end points. Figure 6-12 illustrates the menu tree for setting leased line. 1=Dial Line 1=Netw.
Chapter 6. Configuration If two ISU 128 units are connected through channel banks, both units should be configured for Slave mode (see Figure 6-14). To easily configure ISU 128s for this application, one unit can be optioned using Quick Setup, Ldm 128 Master and the other using Quick Setup, Leased 128k sync. For more information, refer to the chapter Quick Setup.
Chapter 6. Configuration DTE OPTIONS The following procedure configures the DTE options for asynchronous and synchronous applications. Figure 6-15 and Figure 6-16 illustrate the menu trees for both asynchronous and synchronous operation. Ensure your DTE equipment is set for asynchronous operation before attempting to make an asynchronous call. Failure to do so will cause the call attempt to fail. 1=Bit Rate 2=Connector Type 3=RTS Options 1=Netw.
Chapter 6. Configuration Connector Type The ISU 128 can provide an EIA-232, RS-530, or V.35 interface to a DTE by selecting the desired connector type. RTS Options Selecting 1 MS delay causes the Clear-to-Send (CTS) signal to change states 1 millisecond after the DTE Ready-to-Send (RTS) signal changes state. The 18 MS delay causes the CTS signal to change state 18 milliseconds after the DTE RTS signal changes state.
Chapter 6. Configuration DTR signal is in the active state. The unit attempts to establish a call using SN0 until the call is established or DTR goes inactive. Selecting Answer if On only allows the unit to answer an incoming call if the DTR signal is asserted. Dial/ Ans if On... allows the unit to dial Stored Number 0 or answer if DTR is asserted. DSR Options Selecting DSR forced on causes the Data Set Ready (DSR) signal on the DTE connector to always be asserted.
Chapter 6. Configuration Data Format (Asynchronous) A frame consists of a start bit, 7 or 8 data bits, 0 or 1 parity bit, and 1 to 2 stop bits. The settings for Data Bits, Parity Bits, and Stop Bits are available as shown in Figure 6-18. 1=Bit Rate 2=Connector Type 3=RTS Options 1=Netw.
Chapter 6. Configuration 46 ISU 128 User Manual 61202.
Chapter 7 Protocol Options PROTOCOL OPTIONS The ISU 128 communicates with many different types of telecommunication equipment including other ISU 128s, ISDN terminal adapters, Switched 56 DSUs, BONDING-compatible inverse multiplexers, and V.34 (1202029L3 only) compatible analog modems. Communicating between such diverse types of equipment requires the use of various rate adaptation protocols to support various bit rates and DTE settings. Figure 7-1 illustrates the menu tree for setting protocol options.
Chapter 7. Protocol Options 1=Clear Channel 3=CONFIG 1=Netw. options 2=BONDING mode 1 2=DTE options 3=V.120 3=Protocol 4=V.34 4=Quick setup 5=V.110 5=Remote config 6=DSU 57.6 ASYNC 7=T-LINK 8=SAP 9=FALLBACK 0=PPP asyn-sync Figure 7-1 Protocol Menu Tree See the section Recommended Operating Protocols and Table 1-B in Chapter 1 for more information on recommended modes of operation. The desired protocol may be selected with AT commands at the DTE port or from the ISU 128 front panel.
Chapter 7. Protocol Options near- and far-end DCE need to be configured to use the BONDING mode 1 protocol. Also, if the second B channel number is different from the first B channel, it is important that the 7-digit LDN is programmed in the answering unit. The BONDING mode 1 protocol negotiation phase has numerous timers to allow for transmission delays due to satellite hops, international calls, etc. The timers may be adjusted if necessary by entering into the BONDING mode 1 submenu.
Chapter 7. Protocol Options TXADD01 This option specifies the length of time both endpoints wait for the additional call to be connected at the end of negotiation before deciding the BONDING call has failed. The factory default setting of 20 seconds will be sufficient for most calls to go through, although when dialing overseas it may be necessary to lengthen this timer to allow for slower call routing. Values of 1, 2, 5, 10, 20, 50 (default), 100, and 200 seconds may be selected.
Chapter 7. Protocol Options V.110 The V.110 protocol is a CCITT compliant rate adaption method which provides DTE service between the ISU 128 and other V.110 compliant devices. V.110 supports synchronous and asynchronous DTE rates. See the section Recommended Operating Modes and Table 1-B in Chapter 1 for available V.110 rates. Figure 7-2 illustrates the menu path for selecting V.110. V.34 The V.34 protocol allows the ISU to originate and receive calls to analog modems on POTS lines. The V.
Chapter 7. Protocol Options Compression No Compression turns off the MNP5 compression algorithms in the ISU 128. Compress MNP5 enables MNP5 data compression. Compress V42 enables V.42 bis data compression. Compress V42/MNP5 allows the 128 to negotiate MNP5 or V.42 bis compression. 1=Clear Channel 3=CONFIG 1=Netw. options 2=BONDING mode 1 2=DTE options 3=V.120 1=No Compression 3=Protocol 4=V.34 1=Error Ctrl 4=Quick setup 5=V.110 2=Compression 5=Remote config 6=DSU 57.
Chapter 7. Protocol Options DSU 57.6 ASYNC The DSU 57.6 ASYNC or DSTOP protocol allows the ISU 128 to communicate asynchronously at 57.6 kbps with ADTRAN 2- and 4-wire Switched 56 DSU products. In addition, the ISU 128 will communicate with other ISUs over dial and leased connections using this protocol. Figure 7-1 illustrates the menu path for setting the DSU 57.6 ASYNC protocol.
Chapter 7. Protocol Options FALLBACK The FALLBACK asynchronous rate adaption protocol provides the capability to automatically establish calls with other ISDN terminal adapters, Switched 56 DSUs, V.34 modems (optional), as well as other ISUs using a single configuration. To communicate with analog modems, the ISU 128 with V.34 modem option (part numbers 1202029L3) must be used. The ISU 128 must be optioned as follows for FALLBACK operation: • • Any asynchronous bit rate up to 115.
Chapter 7. Protocol Options When originating calls to unknown units, the ISU begins protocol selection based on the local call type. Data 64k is used for FALLBACK selected from Quick Setup menu. Upon connection at 64k call type, BONDING, V.120, and PPP are attempted. If connection is not made at 64k, the ISU 128 attempts another call at 56k call type. If connection is made at 56k, then V.120, T-Link, and PPP are attempted.
Chapter 7. Protocol Options Point-to-Point (PPP) Async-to-Sync PPP provides a standard method for transporting multi-protocol datagrams over point-to-point links. The ADTRAN PPP async-sync protocol allows the ISU 128 and a PC or Macintosh® running PPP software, to communicate with a PPP-compatible bridge or router. The PPP async-sync protocol complies with Internet Engineering Task Force (IETF) RFC 1662. The menu path to select PPP is shown in Figure 7-7.
Chapter 7. Protocol Options The ISU 128 is configured for multilink PPP from the protocol options of the configuration menu by selecting 2=Multilink PPP or by setting S-register S27 to a value of 1. In this mode, the ISU 128 dials a second number to establish a second point-to-point link. Once the second link is established, multilink PPP is performed over both B-channels. The phone number for the second call should be placed in stored number 1 (SN1).
Chapter 7. Protocol Options 58 ISU 128 User Manual 61202.
Chapter 8 Quick Setup QUICK SETUP CONFIGURATION To configure the DTE Options quickly and easily, the Quick Setup menu is available to automatically set up the most common DTE configurations (Figure 8-1). For fine-tuning a particular application and DTE settings, see the section DTE Options for Asynchronous and Synchronous Operation in Chapter 6 for a step-by-step procedure for configuration of the DTE Options. 1=Netw.
Chapter 8. Quick Setup Quick Setup To assist in configuring the DTE options for the ISU 128, ten common configurations are preset in Quick Setup. These include: • • • • • • Synchronous dial operation for 56, 64, 112, and 128 kbps Asynchronous dial operation for 57.6, and 115.2 kbps 128 kbps Leased service 128 kbps Limited Distance Modem using Master Clocking V.34 modem service Fallback 57.
Chapter 8. Quick Setup Dial 64K sync* When the ISU 128 is configured for Dial 64K sync service the following parameters are automatically preset: Service type....................................................................... ISDN dial line Automatic answering ...................................................... Enabled ISDN call type .................................................................. 64 kbps data Data protocol ....................................................................
Chapter 8. Quick Setup Dial 128K sync* When the ISU 128 is configured for Dial 128K sync service, the following parameters are automatically preset: Service type....................................................................... ISDN dial line Automatic answering ...................................................... Enabled ISDN call type .................................................................. 64 kbps data Data protocol ....................................................................
Chapter 8. Quick Setup V34 115.2 async* When the ISU 128 is configured for V34 115.2 async service, the following parameters are automatically preset: Service type....................................................................... ISDN dial line ISDN call type .................................................................. Audio Data Protocol .................................................................... V.34 DTE mode .........................................................................
Chapter 8. Quick Setup Dial 115.2 asyn* When the ISU 128 is configured for Dial 115.2 asyn service, the following parameters are automatically preset: Service type....................................................................... ISDN dial line ISDN call type .................................................................. 64 kbps data Data Protocol .................................................................... BONDING mode 1 DTE mode ...........................................................
Chapter 8. Quick Setup More More takes the user into the following level of choices: Leased 128K When the ISU 128 is configured for Leased 128K service the following parameters are automatically preset: Service type....................................................................... Leased Line Network clock source...................................................... Slave Channel rate...................................................................... 128K Data Protocol .............................
Chapter 8. Quick Setup Factory Setup This option restores the ISU 128 to the factory default setup: Service type................................................................ISDN dial line ISDN switch protocol ...............................................AT&T 5ESS ISDN call type ...........................................................64 kbps data Dialing Mode.............................................................Front Panel Data protocol ........................................................
Chapter 9 Dial Options DIALING OPTIONS Selecting 4=DIAL or pressing the # (pound) key from the Current Status menu displays the front panel available dialing options. (See Figure 9-2.) Access the VT 100 terminal dial options screen (Figure 9-1) by pressing Ctl-D from any screen. The dial options are only available when the ISU is configured for Dial Line operation (not Leased Line). Figure 9-1 VT 100 Terminal Dial Options Screen 61202.
Chapter 9. Dial Options 1=Hang up line 2=Dial number 4=DIAL 3=Redial last # 4=Answer Call 5=Dial stored # 6=Store/Review # Figure 9-2 Dial Menu Tree Hang Up Line Terminates current call. Dial Number Enter and dial a number from the keypad. If an error is made while entering a number, press the Down arrow to correct the mistake. Press Cancel twice consecutively to exit this menu item without dialing a number. Press Enter to dial the number and save as stored number 9 for redialing purposes.
Chapter 9. Dial Options Store/Review Number Enter and review stored numbers. Press the Up or Down arrow to scroll through the 10 stored numbers (SN0 - SN9). To store a number, scroll to the desired stored number location, enter the number to be stored, and press Enter to save the number. If a mistake is made, use the Up and Down arrows to edit the number. Press Enter to save the number and exit. Press Cancel to exit without changing the number.
Chapter 9. Dial Options 70 ISU 128 User Manual 61202.
Chapter 10 Remote Configuration Remote Configuration Remote Configuration allows configuration and testing of a remote unit by calling the remote unit from a local unit. The remote unit can be configured using AT commands, the Front Panel, or the VT 100 terminal interface. There are six items that cannot be set through remote configuration. The items are Dial Line Mode, SPID(s), LDN(s), Switch Type, Quick Setup, and Factory Default.
Chapter 10. Remote Configuration Configuring and Testing with the Front Panel or VT 100 Terminal The menu path to follow to select remote configuration on the Front Panel is shown in Figure 10-1. 3=CONFIG 1=Netw. options 2=DTE options 3=Protocol 4=Quick setup 5=Remote config 1=Cfg. Rmt. Unit 2=Set Password 3=Loopback remote 1B 4=Loopback remote 2B Figure 10-1 Remote Configuration Menu Path When using the VT 100 terminal interface, select the main menu option Cfg. Rmt. Unit.
Chapter 10. Remote Configuration Configure Remote Unit This option allows configuration of a remote ISU 128. The Front Panel will display a prompt for the remote number to dial. Enter a number and press Enter to continue. A prompt for the remote password is displayed. Enter up to six digits for the password to access the remote unit and press Enter to continue. The Front Panel displays status information about the call.
Chapter 10. Remote Configuration The Front Panel can only be used to configure other ISU devices with front panels. AT commands and the VT 100 terminal can be used to configure any ISU device that supports remote configuration, such as the Express XR/XRT and the ISU 2x64 Rackmount. Remote Testing Two tests may be performed from the local unit before connecting to the remote unit.
Chapter 10. Remote Configuration connect. The screen from a VT 100 terminal is illustrated in Figure 10- 6. To set the password, choose Set Password from the Main Configuration Menu. Type the six digit (or less) password, then press Enter. To clear the existing password, do not enter numbers for Set Password. Just press enter. Figure 10-5 Loopback Remote 1B Figure 10-6 Set Password Screen 61202.
Chapter 10. Remote Configuration 76 ISU 128 User Manual 61202.
Chapter 11 Troubleshooting When the ISU 128 powers up, it performs an internal self test. This takes about 10 seconds. At the end of the test, the front panel displays Self Test Passed. IF SELF TEST FAILS If Self Test Passed is not displayed, perform the following procedure to verify if the problem can be fixed locally: 1. Ensure that the ISU 128 is receiving power and is switched on. 2. Turn off the ISU 128. While holding down the 0 key, power back on. Continue to press 0 for 15 seconds.
Chapter 11. Troubleshooting 2. Disconnect the ISU 128 from the ISDN line. From a functioning voice phone, call the local directory number(s) provided with your line. Calling a good ISDN line with nothing connected usually results in a ring or fast busy tone. If someone answers or a not-in-service intercept is received, there is probably something wrong with the translation of the ISDN line. The phone service provider should be able to help. 3.
Chapter 11. Troubleshooting G. With the ISU 128 connected to the ISDN line and powered up, talk to your service provider's repair group and inform them that your ISDN basic rate line has a physical layer 1 problem. Ask them to check the ISDN line. Tell them that you have an NT1-like device at the end of the ISDN line. 4. If the ISU 128 continues to read Getting TEI #1, the ISU 128 is physically connected to your local telephone service provider but is unable to establish logical layer 2.
Chapter 11. Troubleshooting 5. If the ISU 128 continues to read Register SPID #1, the ISU 128 is physically connected to the local telephone service provider and has established logical layer 2. The ISU 128 is unable to establish layer 3. The problem may be one or more of the following: • • The ISU 128 software setup The telephone service provider's software setup To isolate the problem, use the following procedure: A.
Chapter 11. Troubleshooting B. Ensure that the ISU 128 is set up with the correct SPID and LDN by selecting CONFIG, Netw. options, Dial Line, Terminal ID, SPID/LDN. C. Try swapping SPID1 with SPID2 and LDN1 with LDN2. Determine if the problem is the second phone number or the quantity of phone numbers. D. Try another piece of functioning ISDN equipment with a U-interface on the ISDN line. E.
Chapter 11. Troubleshooting E. With the ISU 128 connected to the line and powered up, talk to your service provider's repair group and tell them you have an ISDN basic rate line that appears physically okay but has no terminal endpoint identifier (TEI). Ask them to check the line translation and ensure that the line supports dynamic TEI allocation. Tell them that you have an NT1 and terminal adapter device connected to the line. 82 ISU 128 User Manual 61202.
Chapter 12 Specifications SPECIFICATIONS AND FEATURES This section describes the standard specifications and features incorporated in the ISU 128. Network Interface • RJ-45 for ISDN Basic Rate U-Interface, and Leased 2B1Q service DTE Interface • RS-530 • V.35 • EIA-232 Dialing Selections • In-band DTE dialing: V.
Chapter 12. Specifications Rate Adaption • T-Link • CCITT V.120 • CCITT V.110 • SAP • DSU 57.6 Async • BONDING mode 1 • V.34 (optional) • PPP • MP Interoperability • BONDING Inverse Multiplexers • Switched 56 DSUs • ISDN TAs • V.34 modems (optional) Switch Compatibility • AT&T 5ESS • NTI DMS-100 • National ISDN-1 • NEC B Channel Aggregation • BONDING Mode 1 • MP Display • Two-line by 16 character LCD • LED indicators RS Request to Send. Indicates the DTE is ready to transmit. CS Clear to Send.
Chapter 12. Specifications TR SR Data Terminal Ready from DTE. On when DTR is active at DTE interface. Data Set Ready. Environmental • Operating Temperature: 0 to 50 °C • Storage Temperature: 20 to 70 °C • Relative Humidity: Up to 95%, non-condensing Physical • Dimensions: 2.25"H x 8.75"W x 11.00"D • Weight: 3 lbs. Power • 115 VAC, 60 Hz, 8 W maximum dissipation (part numbers 1202029L2 and 1202029L3) 61202.
Chapter 12. Specifications 86 ISU 128 User Manual 61202.
Appendix A AT Commands This appendix lists the supported AT commands and describes their functions. Command Function A Answer. Puts the ISU 128 in answer mode. D Dial. Precedes the telephone access number [ATD5551212]. H Hang up. Disconnects the current call. O On-line. Commands the unit to go back on line. S S Register. SS S String register. Z Reset. Resets the AT command processor. &N0 Number 1. Read far-end phone number 1 if service subscribed from telephone company. &N1 Number 2.
Appendix A.
Appendix A.
Appendix A.
Appendix A. AT Commands Command Function The following AT commands require that the optional V.34 modem board be installed: V.34 Compression Options %C0 %C1 %C2 %C3 No compression Use MNP compression Use V.42 bis compression Use V.42 bis/MNP compression V.34 Compression Block Size Options \A0 \A1 \A2 \A3 MNP 64 byte blocks MNP 128 byte blocks MNP 192 byte blocks MNP 256 byte blocks V.34 Operational Mode Options \N0 \N1 \N2 \N3 \N4 \N5 61202.
Appendix A. AT Commands 92 ISU 128 User Manual 61202.
Appendix B Current Status Messages This appendix lists the status line messages and their definitions. Messages shown entirely in capital letters are generated by the ISDN network. Messages with lower case letters are generated by the ISU 128. AT&T-5ESS Ready The ISU 128 is connected to an AT&T 5ESS switch and is ready to place/receive calls. Call Connect B1 Bearer channel 1 has been connected and is now active. Call Connect B2 Bearer channel 2 has been connected and is now active.
Appendix B. Current Status Messages Link down The network interface is not active. LPBK DTE Port The DTE connector is looped back in the DTE direction. LPBK Protcl Net The ISU 128 has been commanded to perform a loopback in the network direction after letting the incoming data pass through the current protocol. NEC Ready The ISU 128 is connected to an NEC switch and is ready to place/receive calls. NET EOC LOOPBACK The ISU 128 has been commanded to perform an ISDN loopback toward the network.
Appendix B. Current Status Messages xxxxx can be any of the following: BONDING Bandwidth on Demand Industry Users Group protocol. CLEAR CHAN No rate adaption protocol (allows use of maximum bandwidth). DSTOP DSU 57.6 async rate adaption protocol. FALLBACK FALLBACK rate adaption protocol. PPP Point-to-point protocol. SAP Simple ADTRAN protocol. TLINK TLINK rate adaption protocol. V110 V.110 rate adaption protocol. V120 V.120 rate adaption protocol. V34 V.34 modem (optional). 61202.
Appendix B. Current Status Messages 96 ISU 128 User Manual 61202.
Appendix C Status Buffer Messages This appendix lists the status buffer message and their definitions. Messages shown entirely in capital letters are generated by the ISDN network. Messages with lower case letters are generated by the ISU 128. Answer 1/2 The ISU 128 answered a call on either the first or second channel. The calling phone number is displayed if available. ACCESS_INFO_DISCARDED The network was unable to deliver access information to the far end. Back to on-line ISU 128 went back on line.
Appendix C. Status Buffer Messages BAD_INFO_ELEM Call control error. Bad phone number ISU 128 attempted to call an invalid phone number. Bad TLK Version Invalid TLINK parameters found during end-to-end negotiations. BaudRate ISU 128 does not support the negotiated TLINK baud rate. BEAR_CAP_NOT_AVAIL The bearer channel requested by the user is not available. Bearer mode Incoming call is not of a type the ISU128 can accept. Bearer info mode Incoming call information transfer capability is not known.
Appendix C. Status Buffer Messages Call not ringing User executed an answer command (ATA) but there was not a call present. CALL_REJECTED The call has been rejected by the ISDN Network. Can’t go on-line ISU 128 cannot go back on line. User issued an unknown AT command. CAP_NOT_IMPLEMENTED The network or far end does not support the bearer capability requested. CHAN_DOES_NOT_EXIST The bearer channel requested is not present. CHAN_NOT_IMPLEMENTED The bearer channel requested has not been implemented.
Appendix C. Status Buffer Messages DPUMP END RCVD Indication of a hang-up or disconnect occurring during BONDING. Does not indicate an error condition has occurred. DTE must be SYNC For the protocol chosen, the DTE connector must be optioned as synchronous. DTE not set V25 The DTE equipment is not optioned for the same bit rate as the ISU 128 for V.25 bis dialing. DTR not up ISU 128 tried to place a call in a dialing mode that requires DTR to be in an active state but it is not.
Appendix C. Status Buffer Messages FlowCtl required Bonding negotiation determined that flow control needs to be optioned on. Hangup 1/2 The call on either the first or second channel was disconnected by the ISU 128. The far-end phone number is also displayed. InCmptblFound TLINK end-to-end negotiations found an optioning incompatibility between the two end units. INCOMMING_CALL_BARRED The network will not allow an incoming call.
Appendix C. Status Buffer Messages LDN TOO LONG The entered local directory number has too many digits. MANDATORY_IE_LEN_ERR Mandatory information element length error. MANDATORY_IE_MISSING Mandatory information element missing. Need 2 B chan The DTE bit rate requires the BONDING protocol. Need 64K call The BONDING protocol requires the ISU 128 to be configured for a 64k data call type. Negotiation fail The BONDING negotiation has failed. NETWORK BUSY The ISDN switch is busy and unable to process a call.
Appendix C. Status Buffer Messages No Sreg value Attempt to change an S-register without specifying a value (example: ATS2= ). NO_ROUTE The phone network was unable to find a route to the destination number. NO_USER_RESPONDING The dialed number is not responding. NORMAL_CLEARING The network is disconnecting the current call. NOT end2end ISDN The path that the call was routed over is not ISDN from end-to-end (warning only). NUMBER_CHANGED The number dialed has been changed.
Appendix C. Status Buffer Messages S cmd not = or ? User did not use proper syntax. SAP idle timeout Unit at far end is not configured to use the SAP protocol. SERVICE_NOT_AVAIL The service requested by the user is not available. SOURCE NOT ISDN The incoming calling party is not ISDN (warning only). SReg SetError Local DTE invalid S-register setting. Sync BPS < 56K The synchronous bit rate selected is too slow for the BONDING protocol. Sync Mismatch Both ends Bad Synchronization.
Appendix C. Status Buffer Messages TXFA1 expired Bonding timer TXFA1 expired, other vendors BONDING equipment did not operate properly. TXFA2 expired Bonding timer TXFA1 expired, other vendors BONDING equipment did not operate properly. TX FLOW ERROR Flow control needs to be enabled. TXINIT expired Bonding timer TXINIT expired, called non-BONDING equipment. UNASSIGNED_NUMBER The phone number dialed does not exist. Unknown AT & cmd User issued an unknown AT command.
Appendix C. Status Buffer Messages 106 ISU 128 User Manual 61202.
Appendix D S-Register List S0 AUTO ANSWER Determines how the ISU 128 answers an incoming call. 0 = Disable (ISU 128 does not answer call). 1 = Enable (ISU 128 answers all calls). 2 = Dump all calls. S2 BREAK IN CHARACTER Determines which key or character (in ASCII code) defines the escape command. The standard escape character is a + sign (ASCII value of 43 decimal). To change the character set, set S2 to the desired ASCII value.
Appendix D. S-Register List S11 FALLBACK DEFAULT 1 2 3 4 5 6 7 8 9 Determines how the ISU 128 answers an incoming call if all of the protocols in Fallback failed. = Clear Channel = BONDING Mode 1 = SAP = T-link = V.110 = V.120 = V.34 = DSU 57.6 Async (default) = PPP asyn-syn S12 ESCAPE TIME Determines the delay required immediately before and after entering the escape command for the ISU 128 to recognize and execute the command.
Appendix D. S-Register List S27 PPP MODE Determines type of PPP connection. 0= Single-link operation (default) 1= Multilink operation 2= Use compression S30 DTE CTS Controls the operation of the DTE connector clear to send (CTS) line. 0= Follows RTS 1= Force CTS S31 DTE RTS Controls operation of the request to send (RTS) line. 0= 1 ms delay 17= 18 ms delay S32 DTE DSR Controls the operation of the data set ready (DSR) signal on the DTE connectors.
Appendix D. S-Register List S36 ERROR CORRECTION Sets the type of error control to be negotiated with the far-end modem. 0 = Normal operation no error control. Allows speed matching, buffering, and flow control. 1 = Direct error control, no error control. Does not allow the terminal and ISU 128 to operate at different speeds or use flow control. 2 = Reliable MNP error control. If the far end does not use MNP error control then the call is ended. 3 = Auto-reliable MNP error control .
Appendix D. S-Register List S42 BOND TXADD01 The number of seconds both endpoints wait for the additional call to be connected at the end of negotiation before deciding the BONDING call has failed. When dialing overseas, it may be necessary to lengthen this timer to allow for lower call routing. Range = 0 to 255, 50 sec is default S43 BOND TXDEQ The number of seconds both endpoints attempt to equalize the network delay between the bearer channels before deciding the BONDING call has failed.
Appendix D. S-Register List S51 LINE CLOCK Selects the clock mode in leased mode. 0 = Slave (default) 1 = Master (Leased line only, limited distance MODEM application only). S52 SWITCH PROTOCOL Selects the network switch type for dial service. 0 = AT&T 5ESS 1 = Northern Telecom DMS-100 2 = National ISDN-1 3 = NEC S53 CALL TYPE Call type (dial service only) 0 = Speech 1 = Audio 2 = 56 kbps data 3 = 64 kbps data S54 PROTOCOL TYPE Rate adaption protocol type.
Appendix D. S-Register List Allows an ISU 128 optioned as a leased line unit to respond to DDS in-band latching loopback or V.54 loopback commands. 0 = No checking 1 = Check for DDS latching loopbacks 2 = Check for v.54 loopbacks 3 = Check for V.54 and DDS latching loopbacks S57 DDS TEST S58 CALL SCREENING Allows the ISU 128 to screen incoming calls. 0 = Answer any call 1 = Answer only calls from numbers matching those stored in SN0 through SN9.
Appendix D. S-Register List S72 DATA BITS Selects the number of asynchronous data bits. 0 = 8 bits 1 = 7 bits S73 DTE PARITY Selects the number of asynchronous parity bits. 0 = None 1 = Odd 2 = Even S74 DTE STOP Selects the number of asynchronous stop bits. 0 = 1 stop bit 1 = 1.5 stop bits 2 = 2 stops bits S75 DTE FLOW Selects asynchronous flow control. 0 = None 1 = Hardware flow XON/OFF from DCE controls DTE 2 = XON/OFF from DTE controls DCE 3 = Hardware flow. RTS and CTS flow control.
Appendix E Connector Pinouts PIN 13 PIN 1 FEMALE PIN 25 PIN 14 Figure E-1 EIA-232/RS-530 Interface Table E-A EIA-232 Interface Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Name Shield TD RD RTS CTS DSR SG CD NC NC NC NC NC NC TC NC RC NC NC DTR NC RI NC ETC NC I/O I/O I O I O O I/O O N/A N/A N/A N/A N/A N/A O N/A O N/A N/A I N/A O N/A I N/A Description Shield for cable Transmitted Data Received Data Request to Send Clear To Send Data Set Ready Signal Ground Carrier Detect N
Appendix E: Connector Pinouts Table E-B RS-530 Interface Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Name Shield TD-A RD-A RTS-A CTS-A DSR-A SG CD-A RC-B CD-B ETC-B TC-B CTS-B TD-B TC-A RD-B RC-A NC RTS-B DTR-A NC DSR-B DTR-B ETC-A NC I/O I/O I O I O O I/O O O O I O O I O O O N/A I I N/A O I I N/A Description Shield for cable Transmitted Data Received Data Request to Send Clear To Send Data Set Ready Signal Ground Carrier Detect Receive Clock (return) Carrier Detect (return) Ex
Appendix E: Connector Pinouts V .35 B F J D A N K E C R L H V T P M Z X U S Y W DD BB JJ CC AA NN FF EE LL HH MM KK Figure E-2 V.35 Interface Table E-C V.
Appendix E: Connector Pinouts PIN 13 PIN 1 FEMALE PIN 25 PIN 14 Figure E-3 RS-366 Interface Table E-D RS-366 Interface Pin 1 2 3 4 5 6 7 13 14 15 16 17 22 8-12 18-21 23-25 Name Shield DPR ACR CRQ PND PWI SG DSC NB1 NB2 NB4 NB8 DLO NC NC NC I/O I/O I O I O O I/O O I I I I O N/A N/A N/A Description Shield for cable Digit Present Abandon Call and Retry Call Request Present Next Digit Power Indication Signal Ground Distant Station Connect Digit LSB Digit bit 2 Digit bit 3 Digit bit MSB Data Line Occupi
Appendix E: Connector Pinouts PIN 13 PIN 1 FEMALE PIN 25 PIN 14 Figure E-5 Maintenance Port Table E-F Maintenance Port Pin 61202.
Appendix E: Connector Pinouts 120 ISU 128 User Manual 61202.
Acronyms AMI ANSI B (Channel) BONDING bps BRI CCITT CD CIC CPE CPU CRS CRN CTS DCE DIC DMS DN DSR DTE EIA EKTS ESS FAX FEBE ID I/O ISDN kbps kHz LAN 61202.
Acronyms LATA Mbps MF MNP NEBE NT PBX PC POTS PRI PRN RAM RLN RTS SPCS SAP SPID SS7 TA TE TEI USART WAN 122 Local Access and Transport Area Megabits per second Multi-Frequency Signalling Microcom™ Network Protocol Near End Block Errors Network Termination Private Branch Exchange Personal Computer Plain Old Telephone Service Primary Rate Interface Program Stored Number Random Access Memory List Stored Number Ready to Send Stored Program Controlled Switching System Simple Adtran Protocol Service Profile Id
Glossary B-Channel 64 kbps bearer channel used for voice, circuit, or packet switched data. bearer service As defined by CCITT standards, a type of telecommunication service that provides the capability for the transmission of information between user-to-network interfaces. Bearer services defined for ISDN are circuit mode and packet mode. BONDING mode 1 Protocol Industry standard B channel aggregation protocol. Developed by the Bandwidth on Demand Interoperability Group.
Glossary DDS Dataphone Digital Service. AT&T private line service for transmitting data over a digital system. The digital transmission system transmits electrical signals directly, instead of translating the signals into tone of varied frequencies as with traditional analog transmission systems. Digital techniques provide more efficient use of transmission facilities, resulting in lower error rates and costs than analog systems.
Glossary ISDN Integrated Services Digital Network. A network architecture that enables end-to-end digital connections. The network supports diverse services through integrated access arrangements and defines a limited set of standard, multipurpose interfaces for equipment vendors, network providers, and customers. Interworking with a public switched telephone network is retained. LATA Local Access and Transport Area.
Glossary NT2 Network Termination 2. A unit that provides switching and concentration of subscriber lines at the S-interface. This unit performs the functions of a customer premises switch or multiplexer to multiplex B-channel(s) and D-channel(s) onto one physical path and to route calls to the appropriate B or D channel. PRA Primary Rate Access. Connects high-capacity CPE, such as PBXs, to the network. In the US, this is composed of twenty-three 64 kbps channels and one 64 kbps D-channel.
Glossary T1C 3.152 Mbps. Capable of handling 48 voice conversations. T1C is further up the North American digital carrier hierarchy. T2 6.312 Mbps. Capable of handling 96 voice conversations. T2 is four times the capacity of T1. T3 44.736 Mbps. Commonly referred to as 45 Mbps. Capable of handling 672 voice conversations. T3 runs on fiber optic and is typically called FT3. TA Terminal Adaptor. A DCE that connects to the ISDN S-Interface and enables non-ISDN terminal equipment to communicate over the ISDN.
Glossary 2B+D The Basic Rate Interface (BRI) in ISDN. A single ISDN circuit divided into two 64 kbps digital channels for voice or data and one 16 kbps channel for low speed data (up to 9,600 baud) and signalling. 2B+D is carried on one or two pairs of wires depending on the interface, the same wire pairs that today bring a single voice circuit int o your home or office. See ISDN. 23B+D In ISDN, also known as the Primary Rate Interface.
Glossary X.25 A packet data transfer protocol for the B and D Channels. Defines the interface between Data Terminal Equipment (DTE) and Data Circuit Terminating Equipment (DCE) for terminals operating in the packet mode and connected to public data networks by dedicated circuits. 61202.
Glossary 130 ISU 128 User Manual 61202.
Index A C answer call 68 answer tone 37 always tone 37 incoming tone 37 no answer tone 37 outgoing tone 37 asynchronous data format 45 AT command connect message options 90 remote configuration 71 response message options 89 response message types 90 AT commands 30, 87 changing S-register strings 32 changing S-registers 32 dialing a call using the AT command processor 32 reading S-register strings 32 reading s-registers 32 using AT commands 31 using S-registers 31 audio 25 auto answer disabled 36 dump all
Index maintenance port 119 RJ-45 ISDN IFC 118 RS-366 interface 118 RS-530 116 V.35 interface 117 connector type 43 connector types EIA-232 12 RS-366 12 RS-530 12 V.35 12 CTS options 43 current status messages 93 D data 56 kbps 25 data 64 kbps 25 data bits 34 data flow control options 90 data format asynchronous flow control) 44 transmit clock 45 data format (asynchronous) 45 data rates 83 data set ready control line options 89 dial 112k sync 61 dial 115.
Index flow control (async data format ) 44 RTS options 43 transmit clock (sync) 45 DTR options 43 dump all calls 36 E EIA-232 12 interface 115 environmental specifications 85 EON (end of number) 30 error control 51 F factory setup 66 fallback 54 57.
Index loopback DTE 20 loopback network 20 loopback points 20 loopback protocol 20 loopback remote 21 loopback remote 1B 74 VT 100 screen 75 loopback remote 2B 74 M maintenance interface 13, 119 menu navigation 15 menu tree main branches 16 microcom™ network protocol block size (MNP® blk) 52 more 65 multilink ppp 56 N NEBE/FEBE 22 negotiation fail 102 network data rates 83 interface 83 options 88 network connection 11 O operating protocols recommended 6, 7 operation 15 ordering ISDN with IOCs 9 P passwo
Index R rate adaption 84 rate adaption protocols 54 recommended operating protocols 6, redial last number 68 remote configuration 71, 73 AT commands 71 loopback remote 1B 74 loopback remote 2B 74 menu path 72 set password 74 testing 72 VT 100 screen 72 remote testing 74 repair and return 11 RJ-45 connector 11 interface 118 jack 2 RS-366 12, 29 interface 118 menu tree 29 RS-530 12 interface 116 RTS control line options 90 RTS options 43 S SAP 7 self test failure 77 set password 74 VT 100 screen 75 Simple A
Index U unit identification 89 V V.110 7, 51 V.120 7, 50 V.25 V.25 HDLC flag 35 V.25 sync bisync dialing 35 V.25 sync HDLC dialing 35 V.25 bis 33 menu tree 33 V.25 async dialing 34 V.34 51 compression block size options 91 compression options 91 operational mode options 91 V.35 12 interface 117 V34 115.
Product Support Information Presales Inquiries and Applications Support Please contact your local distributor, ADTRAN Applications Engineering, or ADTRAN Sales: Applications Engineering (800) 615-1176 Sales (800) 827-0807 Post-Sale Support Please contact your local distributor first. If your local distributor cannot help, please contact ADTRAN Technical Support and have the unit serial number available.
