TELOS Nx12 Advanced Digital Broadcast Telephone System USER’S MANUAL Manual Version 1.6 for software version 1.
Telos Nx12 Manual © 2007 TLS Corporation. Published by Telos Systems/TLS Corporation. All rights reserved. Trademarks Telos Systems, the Telos logo, Zephyr, ZephyrExpress, Zephyr Xstream, Nx12, TWOx12, Series 2101, Desktop Director, and Status Symbols are trademarks of TLS Corporation. All other trademarks are the property of their respective holders. Notice All versions, claims of compatibility, trademarks, etc.
Telos Systems USA 2101 Superior Avenue Cleveland, OH 44114 USA Telos Europe Johannisstraße 6 85354 Freising Germany Notices and Cautions This symbol, wherever it appears, alerts you to the presence of uninsulated, dangerous voltage inside the enclosure – voltage which may be sufficient to constitute a risk of shock. This symbol, wherever it appears, alerts you to important operating and maintenance instructions. read the manual.
iv | Table of Contents We support you.... . . . . . . . . . . . . . . . . . . . . . . . . . . . . i 1 Introduction 1 Welcome to the Nx12. . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Features & Benefits. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Why ISDN Makes Sense for Broadcast Talk Show Systems. . . . . . . . . . . 2 Two-Studio Modes. . . . . . .
Telos nx12 manual | Using a small mixer . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Using a production-style console. . . . . . . . . . . . . . . . . . . . . 13 Phones and Remotes . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Input (To Caller ). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Output (Caller). . . . . . . . . . . . . . . .
vi | Changing Between Producer and Talent Modes. . . . . . . . . . . . . . . 38 Using the Director in Producer Mode. . . . . . . . . . . . . . . . . . . . 39 Using the Director in Talent (on-air) Mode. . . . . . . . . . . . . . . . . 40 4.2 The Call Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 4.3 The Console Director . . . . . .
Telos nx12 manual | vii ISDN Protocol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 SPIDs and MSN/DNs (Web Only). . . . . . . . . . . . . . . . . . . . . . 57 Clock Loss. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 5.6 The System Menu . . . . . . . . . . . . . . . . . . .
viii | Status Screen for ISDN troubleshooting. . . . . . . . . . . . . . . . . . . 77 Condition: Can’t Get ISDN Ready Indication. . . . . . . . . . . . . . . . . 78 Condition: System says Ready but attempted calls do not complete . . . . . . 79 Condition: Intermittent ISDN Problems . . . . . . . . . . . . . . . . . . . 80 6.5 Troubleshooting Desktop Director Problems . . . . . . . . . . . . . . . . 81 6.
Telos nx12 manual A3 USA ISDN Ordering Guide | 115 Dealing with the Phone Company . . . . . . . . . . . . . . . . . . . . 115 Details, Details. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 FAXABLE ISDN ORDER FORM (for the USA & Canada). . . . . . . . . . . . 117 A4 Euro-ISDN Ordering Guide 123 Details, Details. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123 FAXABLE ISDN ORDER FORM (for Euro ETS 300). . . . .
| 1 1 Introduction Welcome to the Nx12 The Telos Nx12 combines a 12-line selector and 4 hybrids with advanced signal processing to deliver all you need for your on-air phones. The four hybrids make it ideal for programming where multiple callers are aired simultaneously. It also has the flexibility to serve two studios with two hybrids for each. At the heart of any broadcast telephone system are the hybrids and associated signal processing.
2 | Section 1 ♦♦ Conference linking lets you set up high-quality conferencing between callers with no external equipment needed. ♦♦ Caller ♦♦ The ID support on both ISDN and POTS lines. Nx12 can serve two studios, each with two hybrids. ♦♦ In the two-studio modes, lines can either be shared or exclusive to each studio. In the latter case, there is no possibility for accidental interaction. ♦♦ Support for up to eight Desktop Directors. ♦♦ Compatibility tions.
introduction | 3 significantly better distortion and signal-to-noise performance. 4. Lower noise. Because they are digital, ISDN lines are not susceptible to induced noise. Analog lines are exposed to a variety of noise and impulse trouble-causers as they snake across town on poles and through your building. Hum is the main problem, given most lines’ proximity to pole transformers and AC power wires, but there is also impulse noise from motors, switches, and other sources.
4 | Section 1 Two-Studio Modes The Nx12 can be used with two studios independently. Lines may be independent or shared. Each studio has two hybrids. There are two Progam-on-Hold inputs, one for each studio. Two sets of Telos’ Assistant Producer application can be used independently. Note the following: ♦♦ With analog audio in/out, there are only two total inputs and outputs. So the Nx12 must be used in a mode that combines the two hybrids assigned to each studio into one input/ output.
| 2 5 Installation 2.1 Getting Started The Nx12 mounts in a 2RU high space in a standard 19” rack. You do not need to pay special attention to cooling or ventilation, as the unit will operate in any environment where the stirred air temperature around the unit is between 0 to 40 degrees Celsius (32 to 104 degrees Fahrenheit) with a relative humidly of 0 to 98% (non-condensing). Next installation steps are: ♦♦ Connect the Telco circuits. Learn about telephone service options.
6 | Section 2 2.3 Connecting the Nx12 to Analog Lines The Nx12 uses plug-in interface modules to attach to POTS (regular, analog loop start, telephone lines). The Country setting in the Telco menu configures the characteristics of the interfaces for your country. If you do not see your country listed you should use CTR21 or USA. These modules have 6 modular jacks. The type of jack will be a 6 position 4 pin RJ-11 style. The connection is to the center two pins of this jack.
installation | 7 In the USA & Canada a direct connection to the “bare copper” 2-wire U interface is required. Therefore, the USA & Canada interface module includes an integral NT1 and has RJ-11 style jacks. In the rest of the world, the telephone company provides the NT1, and the 4-wire ISDN S-interface will be used with an 8 pin RJ-45 style jack. Normally we ship Nx12s to North America with the U-interface module and to other areas with the S-interface module.
8 | Section 2 Ordering Help Appendix 3 to this manual describes the ISDN ordering process for USA/Canada in detail, and Appendix 4 does the same for ETS-300 Euro-ISDN. Both include ready-to-go forms that can be sent directly to your telephone company. 2.5 Connecting the Nx12 to ISDN The Nx12 uses plug-in modules to attach to ISDN. These ISDN modules have three modular jacks.
installation | Hot Tip Normally your telephone company should supply an RJ-11 style jack for the U interface. This is the same 4 or 6-pin plug used for analog lines. However, sometimes you may find an 8-pin RJ-45 style jack–and sometimes you may even be charged extra for it! If you have this situation, an RJ-11 plug can be inserted into the center of an RJ-45 jack to make things work.
10 | Section 2 2.6 Integration with a PBX The Nx12 will usually be used independently of any other phone system in your facility. But it is possible to have one or more of the lines come off another phone system. Depending upon the PBX and your preferences, this can be either ISDN BRI or POTS. You might be able to save money by using a T1/E1 or ISDN PRI as your Telco link and having the PBX generate local ISDN BRI or POTS lines for the Nx12.
installation | 11 The other thing to investigate is whether the PBX offers ‘Loop Current Wink’ or ‘CPC’ (Calling Party Control) on the analog ports. Without this supervision, the Nx12 will not detect that a caller on hold has hung up, and your talent will get a recording “please hang up and dial again…” or dial tone when attempting to air such calls. 2.7 Studio Audio Connections Mix-Minus The Nx12 must be fed send-to-caller audio that is free of the caller audio, a mix-minus.
12 | Section 2 ‘Making do’ with an older console Consoles made before around 1990 rarely had good support for mix-minuses, and almost never for more than one or two. With one of these oldsters, some clever improvisation is going to be needed. Here we describe a possible scenario that can be used as a starting point for your situation. We assume an older console with Program and Audition as the main busses. There is another bus of some kind that can be adapted for mix-minus application.
installation | 13 The Nx12 has multiple hybrids and works best if two faders can be assigned to the telephone system with two associated mix-minuses, one for each telephone line column on the Director. This is probably not going to be easy with an older console. But the Nx12 has an option to work with a single external mix-minus by making an internal cross-connection of the hybrids. See Section 5.7 for more on this.
14 | Section 2 if they could, the profanity delay would be a problem, since the talent needs to hear the callers pre-delay. All perceptual codecs (such as the Telos Zephyr) have too much delay for talent at remote locations to hear themselves via a round-trip loop. Therefore, another mix-minus is required to feed a codec. The talent hears callers via the codec return path. As before, you feed this return with mixminus: a mix of everything on the program bus minus the remote audio.
installation ♦♦ Bridging | 15 impedance (10k ohms) Analog Input XLR PIN DESCRIPTION 1 Ground 2 Audio + 3 Audio - The inputs are designed to be sourced from balanced, line level signals. Usually shielded cables have the shield wire connected only on one end to prevent ground loops. Older equipment with a transformer output stage may need a terminating resistor across pins 2 and 3; consult the manual for your equipment for how to use it with high impedance inputs.
16 | Section 2 AES Input XLR PIN DESCRIPTION 1 Ground 2 Signal + 3 Signal - So that all four hybrids are accessible in spite of the limited rear panel space for connectors, we use one AES input for two hybrids. The relationship is as follows: ♦♦ AES 1 Left is to Hybrid A ♦♦ AES 1 Right is to Hybrid B ♦♦ AES 2 Left is to Hybrid C ♦♦ AES 2 Right is to Hybrid D Most mixing consoles with AES outputs are able to deliver the required split.
installation ♦♦ 110 | 17 Ohms ♦♦ The output is synced and sample-rate converted to either the frequency of the AES Input 1 signal or an internal 48kHz clock, depending upon a menu selection. AES3 Output XLR PIN DESCRIPTION 1 Ground 2 Signal + 3 Signal - Since, like the inputs, each AES output has two hybrids, you may have to use a routing switcher, distribution amp, or console routing function to direct the two signals appropriately for your installation.
18 | Section 2 Desktop Director This is the most common control surface. It serves as both a phone and call controller, depending on whether it is set to Talent (on-air controller) or Producer (Screener phone). It has two telephone line columns. The Desktop Director is suitable for Producer screener mode telephone in all cases. Extended Desktop Director In Talent mode, adds two more telephone line columns, making four in total.
installation | 19 Nx12 Desktop Director Ports (RJ-45) PIN DESCRIPTION 1 N/C 2 N/C 3 Transmit to Nx12 + 4 Receive from Nx12 + 5 Receive from Nx12 - 6 Transmit to Nx12 - 7 Power -48VDC 8 Power + Connecting Desktop Directors Direct Connection Up to four Desktop Directors can be plugged directly into the Nx12.
20 | Section 2 To connect two Desktop Directors to one port, a power supply and RJ-45 modular splitter is required. One of the Directors must have its termination removed. This unterminated Director must be within 33 feet (10 meters) of the power supply. Desktop Director Termination Removal Desktop Directors are shipped with the internal termination resistors enabled. When two Directors are used in a single port, the termination on the Director closer to the power supply will need to be disabled.
installation | 21 Tip Power-over-Ethernet and our ISDN-based Director use different connections for power. It is wise to carefully label wiring used with RJ-style connectors to reduce the risk of applying power to something that does not expect it. We suggest that you use different colored cables (or connector boots) on the Desktop Director cables so that you can tell them from your Ethernet cables. Desktop Director Assembly Connections The black “curly cord” plugs into the handset.
22 | Section 2 The Nx12 fully supports Livewire. For more information on using the Nx12 with a Livewire Audio-over-IP network, see Section 5.8. IMPORTANT If you are not using a Livewire-ready network, do not enable Livewire streams or you will flood your Ethernet network. Only when a properly configured Livewire-compatible Ethernet switch is present should Livewire streaming be enabled. The Audio menu includes LW enable/disable as the first item.
installation PIN DESCRIPTION 5 Record Start 1 6 Ring Mute In 1 7 N/C 8 +5VDC (50mA max) 9 Record Stop 1 10 User Out (Dump) 2 11 Ringing Out 2 12 Priority Ringing Out 2 13 Ring Mute In 2 14 (reserved) 15 N/C 8 | 23 1 p a r a l l e l C o n T r o l Note for the Curious The DB- designation for D-Sub connectors is from Cinch Corp’s part numbering system.
24 | Section 2 ing it from the output to the +5v source on pin 8. An appropriate value is 2.2kΩ. ♦♦ Sink (pull-down) current must be limited to 400mA maximum per output with total output restricted to 1 amp (200mA each output if all five will be used). If you want to drive a relay, lamp, or high-current LED, you will need an external power source. Connect your external power source negative to Nx12 ground at pin 1 and positive to the relay. The other side of the relay goes to the output pin.
| 25 3 Basic Configuration 3.1 Step-by-Step Here is a step-by-step guide to basic Nx12 configuration for a new installation: ♦♦ Enter TCP/IP addresses, if used, for Web interface, remote control, and Livewire audio networking. See Section 5.3. ♦♦ Set Input Source for Analog, AES3, or Livewire. See Section 5.8 if you will be using Livewire. ♦♦ If you are using Livewire, configure it using the Web interface.
26 | Section 3 ♦♦ ISDN S-interface. There will be 3 RJ-45 jacks. With ISDN, there are two voice channels for each physical connection, so only half as many jacks are needed. The line list in the LCD Telco menu will correspond to the installed module types, and your configuration entries will vary accordingly. Analog Phone Line Setup When POTS lines are used, the only configuration required is to set the Country in the Telco menu. This adjusts the Nx12 for correct impedance, loop current, and signaling.
Basic configuration | 27 2. Click on the Telco menu. With ISDN modules installed in both Telco interface positions, you will see a page similar to the one below. 3. Choose the ISDN Protocol. For the USA and Canada, this will usually be Natl.I-1. For Europe and much of the rest of the world, it will be ETS300. 4. For Natl.I-1, enter the SPIDs for each voice channel given to you by the telephone company. Leave this blank for other protocols. 5.
28 | Section 3 More Tips Incorrectly entered SPIDs are the most common problem users in the USA & Canada have placing ISDN calls. Compare the SPIDs you have entered with the SPIDs provided to you on by the phone company to be certain that you have entered them correctly. Do not add anything to your SPIDs. Note that there are no hyphens, dashes (-), or spaces in SPIDs so the system will not allow you to enter any non-numeric characters. If your installer has included them in the SPID, ignore them.
Basic configuration ♦♦ Drop | 29 this test call by pressing the right Drop button. ♦♦ Having completed that first call, you know your lines 1 and 2 are working. (If you are using ISDN, you have now tested the first BRI.) ♦♦ Now repeat this test by calling from line 2 to line 3, line 3 to line 4 etc. until all lines have been tested. ♦♦ Press the Drop button after the final call. Tip Many phone lines have per-minute usage charges.
30 | Section 3 Time to test it out! Ok, you made it! Another hour and you can go home for the day! First we will check that the mix-minus for each hybrid is correct. Then we will make a test call. ♦♦ Confirm that the Desktop Director you will be using is working and says Talent at the top of the screen. If it says Producer, follow the directions in Section 4.1 to change this Director to Talent mode. ♦♦ Next, pick up the handset and press the left column line 1 button to select the line for dialing.
Basic configuration | 31 artifacts, and the caller should sound clear. 7. Move the call to Phone 2 by pressing the right column line 1. 8. Repeat steps 4 through 6 using lines on the right column. What now? Your basic installation is complete. Next you will want to look over other sections of this manual to familiarize yourself with the system and to set up the following parameters: ♦♦ Desktop ♦♦ Receive ♦♦ Caller Director operation EQ, AGC & Noise Gate See Section 5.4 and 5.
32 |
User operation 4 | 33 User Operation 4.1 Desktop Director The Telos Desktop Director is both a control surface for putting calls on-air and a telephone set for conversations with callers on the studio telephone lines. The Director has two modes of operation – Producer (screener) mode and Talent (on-air) mode. Tip Since certain functions work differently in Talent versus Producer mode, it is important to understand that there are two modes, and how to switch between them.
34 | Section 4 Call is On-Air – Column 2 Call is On-Air & Locked – Column 1 Call is locked and cannot be dropped or placed on hold. To unlock, press the line button to the left of this icon. Call is On-Air & Locked – Column 2 Call is locked and cannot be dropped or placed on hold. To unlock, press the line button to the right of this icon. Screened Hold - Call is on hold and has been screened by the Producer Call is on hold, has been screened, and is Next Press the Next button to put this line on-air.
User operation | 35 Line is not operational Line Button Columns Talent Mode Each line has 2 buttons, the left column for Caller 1 and the right column for Caller 2. Pressing a line button places the caller on that line on-air using the corresponding hybrid. Note: When the Nx12 is using a two-studio Show Mode (see Section 5.7), only the left column will be active. Pressing a line button when a call is already on-air locks the call. To unlock, press the line button a third time.
36 | Section 4 Calls placed on screened hold in this manner are being queued up from the first selected to the last one selected by the screener. The next caller line icon is represented by a blinking check mark. If there is no screener to select and order calls, the line which has been ringing the longest will be selected instead. If no line is ringing, the line on hold the longest will be selected.
User operation | 37 Record Control This is intended to control an external recording device. It operates only if connected. Pressing the button once when nobody is on air, arms the recording feature (LED blinking). Once armed, taking a call starts the recorder automatically (LED solid). When the call is dropped, the recorder will be stopped and the system will re enter the “armed” state. Pressing the button when a call is already on air starts the recorder (LED solid).
38 | Section 4 Adjust Volume Ringer 5 Speaker 5 Handset 5 back [-] [+] Press ∆ or ∇ to choose which level you want to adjust. Pressing [-] will decrease, while pressing [+] will increase the volume level for the item displayed. The change will take place immediately. Pressing the soft key button under the word back or the Select button will return you to the main screen. The following volume levels can each be individually adjusted: – Adjusts the volume of the ringer.
User operation | 39 Main Menu Change Director Mode Select Ringer Configure Shows ∇ Adjust LCD Panel back The words Change Director Mode should be highlighted. 2. Now press the Select button. You will now see a screen like this: Main Menu Producer (screener) Talent (on air) back 3. Press ∇ or ∆ to change the setting. 4. Press Select to confirm your choice or press the soft key below the word back to return to the main menu without any change taking effect.
40 | Section 4 Hot Tip You can use this feature to re-order the next queue at any time. Simply press the right line buttons for the calls in reverse order from the order you wish to air them. Press the right line button first for the call to be aired last, then the button for the next line to be aired before that and so on pressing the right line button for the call to be aired next last.
User operation | 41 Next This button will take the call designated as next on the left line column. If no call is currently designated next, the call which has been on Screened Hold the longest will be taken. If a screener is not used, the line which has been ringing longest will be taken. If no line is ringing, the line on hold the longest will be taken. Block All Pressing this button will clear all lines except lines on-air, on the handset, on hold and “priority” lines such as the studio hotline.
42 | Section 4 feedback, lower the cue speaker volume. Making calls using the built-in speakerphone. Press the Speakerphone button, select a line using the left column and dial. If you wish to place this caller on air, you can press a left or right column line button. Answering calls with the handset. Pick up the handset and select a line using the left column or press Next to select the line which has been ringing longest. Answering calls using the speakerphone.
| 43 5 Detailed Configuration & Reference First Step... After power-up and initialization, the status screen appears. When you see this screen, and if ♦♦ ISDN or POTS lines are connected and functioning correctly, and ♦♦ the Nx12’s basic configuration settings have been adjusted to the requirements of your installation, then the Nx12 is ready for next steps. You may confirm that ISDN lines are ready with the ISDN status screens.
44 | Section 5 5.2 Status Displays Telco line and Desktop Director status information is available on both the Web interface and the LCD. On the LCD, pressing any menu button twice displays the status screens. These status screens display information about the state of the Nx12, but do not allow you to make any changes.
detailed configuration & reference | 45 Accepting Call Nx12 has accepted an incoming call and is waiting for the Telco switch to connect it. Or incoming POTS call is pending – system is ’off-hook’ waiting for loop current. Connected All signaling is complete – the ISDN voice channel is available for use. Or a POTS line is ‘off-hook’ and loop current has been detected. Desktop Director Status This screen shows the status each Desktop Director. CH represents the channel number.
46 | Section 5 5.3 Using the LCD/Buttons and Web for Configuration You use the various configuration settings to adjust audio levels and processing options, set the ISDN parameters, etc. You may use either the front panel LCD/button user interface on the Nx12 main unit or the Web interface to access configuration options. The Web interface offers the full set of configuration options, while the LCD/button includes only the most often needed items.
detailed configuration & reference | 47 The Nx12’s default IP number is 192.168.0.230. Normally, you would change this to a number appropriate for your network using TCP/IP Setup in the System menu. You would also enter appropriate values for Subnet Mask and Gateway Address. See The System Menu below for details. But if you will just be doing configuration with a cross-cable or isolated switch/hub, you can keep the default IP number.
48 | Section 5 Input Setting Related to Input Level Input Setting -10dBV 0dBu +4dBu +9dBu PPM -9dBfs PPM Analog input level - 10 dBV nom 0 dBu nom +4 dBu nom +9 dBu PML n/a Livewire/AES - 32 dBfs nom -24 dBfs nom -20 dBfs nom -15 dBfs -9 dBfs PML The ballistic (time) characteristic of Nx12’s meters changes depending on the Input Level setting so to match the expected console meter type. When -10, 0, or +4dBu is selected, the meter has a VU-standard integration time.
detailed configuration & reference | 49 send level. However, doing so can reduce effective hybrid performance and increase leakage. Conversely, lowering this setting can reduce leakage. Call Ducking This control adjusts the amount of ducking that occurs to the received telephone audio when send-to-caller audio is present. A value of Full Duplex means that the telephone audio is never ducked or attenuated, while Half Duplex applies maximum attenuation when send audio is present.
50 | Section 5 Receive EQ (Caller Dynamic Digital EQ – DDEQ) Telephone audio frequency response varies widely since many factors can affect it (we’ve measured the response on a number of calls and the results were revealing). Consequently, some form of receive equalization is desirable. There are three choices for the type of equalization applied to the received telephone audio: – The caller audio is passed through without modification. The Rcv EQ values are ignored in this mode.
detailed configuration & reference | 51 Separate requires the mixing console to provide the cross-connection for conferencing, when required. With One Show show mode, and in any of the Two Show show modes, there are two hybrids per show, so using the Separate mix-minus mode means you have two caller outputs to each console, and two mix-minus caller inputs from each console.
52 | Section 5 Second of two Shows: Input 2 ∑ Hybrid A Output 3 ∑ Hybrid B Output 4 In 4-Column show mode, you have 4 independent caller outputs to 4 faders on the console, but require only 1 mix minus feed. All callers hear the one console mix-minus feed and each other. ♦♦ 1 in/1 out This mix-minus option means each console only has to make a single mix-minus feed for the caller send audio and the Nx12 makes only one mixed caller audio output of all callers, to one fader on the console.
detailed configuration & reference | 53 combined mix of all callers’ audio, and require only one mix-minus feed from the console. All callers hear the one console mix-minus feed and each other.
54 | Section 5 ♦♦ 4-channel In this mode there are up to four caller inputs/outputs. The L and R of each AES signal are used, creating four independent caller inputs and four caller outputs. To use this mode, your mixing console must be capable of splitting and combining separate channels of audio to and from the L/R pairs of AES signals. This is sometimes called the ‘dual mono’ mode of AES operation. Program on Hold is via the analog inputs.
detailed configuration & reference USA 720 ms Belgium, Netherlands, Switzerland 120 ms France, Luxemburg, Portugal, Germany 270 ms Rest of Europe 90 ms | 55 The hook flash is sometimes used as a signal to initiate transfer or other features, with the specific effect being dependent on the Telco or PBX capabilities and configuration. Loop Current Checking (Web only) Affects analog lines only. The Nx12 periodically checks each analog line port for loop current.
56 | Section 5 There are a number of choices, but the most common are described below. For Europe and many other parts of the world ♦♦ ETS 300. This is the very common Euro-ISDN, according to the ETS 300 standard. For USA & Canada and a few other parts of the world ♦♦ Natl. I-1. National ISDN-1 is the most common protocol for the USA & Canada and some other parts of the world. May also be used with lines conforming to National ISDN-2. See the notes about SPIDs, below. ♦♦ DMS Cust.
detailed configuration & reference | 57 Note After you enter (or change) your SPIDs or DNs, you must reboot the Nx12. Therefore, once you have entered SPID1, SPID2, DN1, and DN2 you should turn the power off and then back on. Then go to the Status screen and verify Ready status for both channels. SPIDs and MSN/DNs (Web Only) There will be entry locations for SPIDs and MSN/DNs for all line positions, whether needed, or not.
58 | Section 5 ISDN Tip ETS 300 users should disregard all references to SPIDs. Euro ISDN does not have SPIDs (you lucky souls)! IMPORTANT If your line status shows “Wait” at least one of your SPIDs is incorrect or your ISDN Protocol setting is incorrect! In this case, check the SPID. For a list of known working SPIDs by telephone company, see the Appendix. Notes on SPIDs 1. Incorrectly entered SPIDs are the most common problem USA users have placing ISDN calls.
detailed configuration & reference | 59 Hot Tip Some versions of the Telos Zephyr and Zephyr Express do not require that Directory Numbers be entered. This is not true for the Telos Nx12 and other newer products.. You must correctly enter these numbers for the system to work. Note for the Curious The actual physical B channels of the BRI line are assigned on a per call basis, with the first incoming call assigned to the first B channel.
60 | Section 5 to get this from your network administrator or Internet service provider. To enter IP addresses using the LCD/button interface: Select the TCP/IP Settings… sub-menu. To enter an IP address, use the following procedure: 1. Highlight the IP address 2. Press OK 3. Press ∇ repeatedly to delete existing IP address 4. Press ∆ until the desired digit is displayed 5. Press OK to accept that digit. To delete a incorrect digit press ∇ 6. Press ∆ until the desired digit is displayed 7.
detailed configuration & reference | 61 Hold on Select The Direct Hold feature allows the operator to seize the next call which has been ringing for the longest time and put the caller he was talking with back on hold in one simple step, by pressing the Next key. If no call is ringing, the process remains the same with callers on hold. Pressing the Next key seizes the call, which was on hold for the longest time, and puts the previous caller on hold.
62 | Section 5 Reboot System? This menu has two options: ♦♦ No – Goes back to the Reboot System sub-menu. ♦♦ Yes – Causes the system to reboot. (All callers will be lost.) This command is intended to save you a trip to the back of the rack. This reboot is equivalent to removing power and then restoring it. Firmware Update (Web Only) See Section 5.9. 5.
detailed configuration & reference | 63 Sharing the Nx12 – Two-studio Modes These modes allow a single Nx12 to be used with two studios. Telephone lines may either divided and used independently or be shared with both studios having access to the same lines. Each Desktop Director, Console Director, and call control software application needs to be attached to a show. See below for instructions on how to do this. The POH 1 input goes to Show 1 and the POH 2 input to Show 2.
64 | Section 5 ♦♦ SHOW 2 – Line is available for the show that uses hybrid 2 only ♦♦ SHOW 1&2 – Line is available for both shows (shared line) 6. Press the SELECT button to accept your changes. Note: You must reboot the system after configuring this setting. If you wish to configure lines as ‘Priority’ or ‘Normal’ (see below) you may do so before rebooting. To configure lines as Priority or Normal lines: 1. Press the MENU softkey. 2.
detailed configuration & reference | 65 1. Press the MENU softkey 2. Scroll down until Select Show is highlighted and then press
66 | Section 5 Consult Introduction to Livewire, available on the axiaaudio.com website for a description of Livewire and an explanation of the various terms and options. Note that the terms “Sources” and “Destinations” are from the perspective of the Livewire network and have the same usage as for Livewire Nodes. There are 4 hybrid channels. You can enter the Livewire text name and channel number or accept the defaults. Livewire channels are two-way, so this applies to both the send and receive audio.
detailed configuration & reference | 67 When Livewire is enabled, the corresponding Nx12 Analog or AES3 inputs are switched-off. However, should a Livewire input fail; the Nx12 automatically switches the input to Analog/ AES, providing a back-up. On the other hand, the Nx12 analog/AES outputs will be simultaneously active when Livewire is enabled. If you need to specify the source and destination Livewire channels independently, click the Expert Mode link to open a new page with these options.
68 | Section 5 5.9 Firmware Update Nx12 firmware may be updated via the Web interface. Open your browser, connect to the Nx12, and click on the System link. Firmware update is at the bottom of the System page. The first step is to get the new firmware onto your PC. This will usually be via a download from the Telos website or an email attachment from Telos customer support. The file will have the extension .pkg.
detailed configuration & reference | 69 If you desire to write your own application to access the Nx12 via this protocol, please visit our website at www.telos-systems.com where you can download the specifications of this protocol and an SDK for Windows (see the downloads page section entitled ‘Series 2101 development Kit’). Telnet A telnet session can access certain advanced functions and logging, primarily for troubleshooting when requested by Telos support.
70 | Section 5 Type ‘help ’ to get specific help about a command. Type ‘help *’ to get a short list of commands. Type ‘help **’ to get a detailed list of commands. Type ‘help *’ to get a list of commands starting with . ‘#’ starts a decimal number, ‘%’ a binary number, ‘$’ a hex number. Current number base is 16. Separate multiple commands on a line by ‘::’.
detailed configuration & reference | 71 5.
72 | Section 5 ♦♦ Automatic ♦♦ Noise Gain Control/Platform leveler gate ♦♦ Dynamic ♦♦ Sample equalization rate conversion High-pass ‘hum’ Filter This filter removes hum and other unwanted low frequency noise from the caller audio. This filter has a break frequency of 100 Hz. Receive Automatic Gain Control This AGC serves to improve consistency of caller audio levels. This function is very important to effective hybrid performance as caller levels can vary by as much as 30 dB.
detailed configuration & reference | 73 larly useful when the caller is carrying on and the talent wants to interrupt to move the show along. ♦♦ Reduces feedback when a loudspeaker is necessary. ♦♦ In the loudspeaker case, reduces audibility of the caller signal that couples through the acoustic path, into the microphones, and is returned the caller resulting in a more natural sound for the caller.
74 | Section 5 in this response characteristic, flattening out those peaks with an equalizer can significantly improve the feedback margin. A spectrum analyzer connected to the output of your mic processor will help detect the frequency of those peaks. ♦♦ If necessary, soften acoustic room reflections by adding curtains or wall treatments. The discussion above is intended to help in those situations where open speakers are a requirement.
| 75 6 Technical Data & Troubleshooting 6.1 Overview A consequence of modern surface-mount construction is that it is frequently no longer possible for local repairs to be made. Special and expensive equipment is required to change parts. As well, today’s equipment is very complicated and requires repair technicians to have detailed experience and training, and have access to high-end test equipment.
76 | Section 6 You can’t fix any system without the right world view; a zeitgeist of suspicion tempered by trust in the laws of physics, curiosity dulled only by the determination to stay focused on a single problem, and a zealot’s regard for the scientific method. Perhaps these are characteristics of all who successfully pursue the truth.
technical data & troubleshooting | 77 keep careful track so you know what you have eliminated. Step 6. Fix the problem. A Final Thought… Constantly apply sanity checks. More than three decades ago, the Firesign Theater put out an album called “Everything You Know is Wrong”. Use that as your guiding philosophy in troubleshooting a Telos Two set-up. For example, just because you checked the Telco line last night and it was fine does not mean that it’s OK now.
78 | Section 6 Accepting Call Nx12 has accepted an incoming call and is waiting for the Telco switch to connect it. Connected All signaling is complete - the voice channel is available for use. A caveat regarding the Ready indication: If you have this indication with the Nx12’s Telco mode set to AT&T Cust and you cannot dial, it is likely that your line is Natl. I-1 or DMS-100.
technical data & troubleshooting | 79 In the case of Natl.I-1 or 2, and DMS-100 carefully verify that you have the correct SPID from the Telco, and that you have properly entered it into the system. It must be correct in order for anything to work! We’ve seen a few cases where it was given incorrectly by Telco personnel, so it might be a good idea to re-check with them if things are pointing in this direction.
80 | Section 6 Condition: Intermittent ISDN Problems These are among the most difficult kinds of problems to solve. Rest assured, however, that we have yet to lose one! First try disconnecting the ISDN line and waiting a full 60 seconds (leave the Nx12 on) and then reconnect the line.
technical data & troubleshooting | 81 to turn on ISDN logging. 6.5 Troubleshooting Desktop Director Problems Most problems with the Desktop Directors are cable related. First try a new cable. If that fails to solve the problem, try the Desktop Director with a short cable plugged directly into each of the Director Ports on the back of the Nx12. Note that early production Call Controllers require a modification to operate with the Nx12.
82 | Section 6 6.7 ISDN Cause Phrases/Values When there is an ISDN problem in the network, a phrase appears in the ISDN protocol log that communicates information about the cause of the trouble. See Section 7.10 for how to enable ISDN logging through the Telnet port. These “Cause Values” are numbers generated by the network. When possible, we use those suggested by the Bellcore standard. Note that in some cases there may be more than one meaning.
technical data & troubleshooting | 83 Cause No. 8 – Call is proceeding/Preemption Call in process, please standby. or This cause indicates a call has been preempted. Cause No. 9 – Preemption, reserved This cause indicates a calls has been preempted due to the circuit being reserved for reuse. Cause No. 10 – Prefix 1 not dialed [DMS Custom only] This cause indicates that the prefix 1 was not included in the called party address and is required. Cause No.
84 | Section 6 party is no longer assigned, The new called party number may optionally be included in the diagnostic field. If a network does not support this cause, cause no: 1, unallocated (unassigned) number shall be used. Cause No. 26 – Non-selected user clearing This cause indicates the user has not been awarded the incoming call. Cause No.
technical data & troubleshooting | 85 Cause No. 38 - Net out of order This cause indicates that the network is not functioning correctly and that the condition is likely to last a relatively long period of time e.g. immediately re-attempting the call is not likely to be successful. Cause No. 39 – Permanent frame mode connection is out-of-service [Q.850 only] This cause indicates a calls has been preempted due to the circuit being reserved for reuse. Cause No.
86 | Section 6 Cause No. 53 – Service operation violated This cause indicates that the user has violated the service operation. Cause No. 54 – Incoming calls barred The user will not accept the call delivered in the SETUP message. Cause No. 55 – Incoming calls barred within CUG at destination This cause indicates that incoming calls are not permitted to members if this Closed User Group Cause No. 57 – Bearer capability (Data/voice) not authorized.
technical data & troubleshooting | 87 CLASS 1.5 (invalid message; e.g. parameter out of range) Cause No. 81 – Invalid call reference value This cause indicates that the equipment sending this cause has received a message with a call reference which is not currently in use on the user-network interface. This value only applies if the call reference values 1 or 2 octets long and is not the global call reference. Cause No.
88 | Section 6 be processed. Cause No. 97 - Message type non-existent or not implemented This cause indicates that the equipment sending this cause has received a message with a message type it does not recognize either because this is a message not defined, or defined and not implemented by the equipment sending this cause. Cause No. 98 – Message not compatible This cause indicates that the message received is not compatible with the call state or the message type is non-existent or not implemented.
technical data & troubleshooting | 89 calls, etc. Cause No. 113 – Bearer service unavailable [VN 4 only] This cause indicates that the bearer service requested is not available or is unimplemented. Cause No. 114 – End-to-End Information transfer impossible [VN 4 only] This cause indicates that the requested network does not support the user end-to-end transfer capability. CLASS 1.7 (interworking class) Cause No.
90 | Section 6
| 91 7 Specifications General Interface for connecting six ISDN BRI (S0) or twelve analog telephone lines to professional studio equipment. Includes four high-performance digital hybrids and a digital matrix switch. All hybrids can be dedicated to a single studio for excellent conferencing results, or the Nx12 may be used to serve two studios, with two hybrids each. Audio interfaces included as standard are analog and Livewire Audio-over-IP. An optional AES interface module is available.
92 | Section 7 Audio Analog Inputs ♦♦ 2x send analog inputs ♦♦ 2x Program-on-Hold analog inputs ♦♦ XLR female, pin 2 high. Active balanced, with RF protection. ♦♦ Output level adjustable ♦♦ Analog clip point from –7 to +8 dBu (nominal) +21dBu ♦♦ Output impedance <60 Ohms x2 ♦♦ Analog-to-digital converter resolution 20 bits Analog Outputs ♦♦ 2x receive analog outputs ♦♦ XLR male, pin 3 high. ♦♦ Input level Adjustable, -7 to +8 dBu (nominal) level.
Specifications | 93 ♦♦ 12 telephone lines, 4 hybrids, 4 studio inputs, 4 studio outputs, 2 Program-on-Hold inputs ISDN Telephone Line Connectivity Protocol Compatibility: ♦♦ National ISDN-1 and 2 ♦♦ DMS-100 ♦♦ AT&T Custom Functional 5ESS Custom Point-to-Point ♦♦ Euro-ISDN conforming to the NET 3/ETS300 protocol Interface (one of the following): ♦♦ USA & Canada Integrated NT1 for direct connection to ISDN line via the 2-wire U-interface (6-position/2-pin RJ-11 connector). 2B1Q line coding.
94 | Section 7 ♦♦ With analog audio in/out, there are only two total inputs and outputs. So the Nx12 must be used in a mode that combines the two hybrids assigned to each studio into one input/ output. ♦♦ The AES option provides 4 input and 4 output channels total, so all hybrids are accessible with each studio using one AES connection’s two channels. Program-on-Hold remains an analog input. ♦♦ Livewire provides the full 4 hybrid input channels, 4 hybrid output channels, and 2 Program-on-Hold inputs.
Specifications | 95
96 |
| 97 8 Warranty and Application Caution TELOS Nx12 LIMITED WARRANTY This Warranty covers “the Products,” which are defined as the various audio equipment, parts, software and accessories manufactured, sold and/or distributed by TLS Corp.,d/b/a Telos Systems (hereinafter “Telos Systems”). With the exception of software-only items, the Products are warranted to be free from defects in material and workmanship for a period of one year from the date of receipt by the end-user.
98 |
USA SPIDs by Telco A1 | 99 USA SPIDs by Telco Here is a list of known working SPIDs (Service Profile IDs) by telephone company, compiled from our direct experience helping clients with ISDN installations. Your SPIDs may be different, of course. The SPID is distinct from your telephone number, and does not necessarily contain your area code or telephone number, although this is generally the case. Incorrect SPIDs will be indicated by the line status indication Wait on the Nx12 ISDN status screen.
100 | Appendix 1 Century Telephone SPID1 XXXYYYZZZZ00 XXXYYYZZZZ00 SPID2 XXXYYYZZZZ01 or Cincinnati Bell SPID1 XXXYYYZZZZ0000 01YYYZZZZ000 SPID2 XXXYYYZZZZ0001 or or SPID1 00YYYZZZZ01 SPID1 XXXYYYZZZZ0000 SPID2 00YYYZZZZ02 SPID2 XXXYYYZZZZ0101 or 00YYYZZZZ01 Nextlink/XO XXXYYYZZZZ Fort Mills Telephone or XXXYYYZZZZ XXXYYYZZZZ1 or Frontier Communications XXXYYYZZZZ0101 (if requested) 01YYYZZZZ000 Northern Pittsburgh Telephone GCI (Alaska) XXXYYYZZZZ000 XXXYYYZZZZ00 Pacific Bell GTE
USA SPIDs by Telco Quest- See US West Rochester Telephone 01YYYZZZZ0 SBC- See Pac Bell, Ameritech, or Southwestern Bell SNET (Southern New England Telephone) 01YYYZZZZ00 or 01YYYZZZZ000 or SPID2 XXXYYYZZZZ100 Standard Telephone (GA) SPID1 XXXYYYABCDCD SPID2 XXXYYYEFGHGH (last two digits of phone number repeated) US West XXXYYYZZZZ1111 or 01YYYZZZZ00 or 01YYYZZZZ000 XXXYYYZZZZ0101 Verizon- See Bell Atlantic, or GTE Southwestern Bell Vermont Telephone XXXYYYZZZZ0101 or XXXYYYZZZZ or 01YYYZZZZ000 or 01
102 |
Guide to telephone terminology A2 | 103 Telephone Terminology Guide You’ll get better results from the Telco if you understand and speak the lingo! We have tried to include the typical acronyms used by Telco personnel. We’ve put the definition under the most commonly used acronyms. AMI – Alternate Mark Inversion. A T1 line coding method. This is the older of the two commonly available. Modified AMI is also used on the ISDN S interace. See line coding, T1. See Also B8ZS.
104 | Appendix 2 or incentive to potential tenants. If a BLEC offers Long Distance Service it is covered by the same regulations as any other LEC. Blocking- When a circuit switched call cannot be completed. The percentage of blocked calls to the number of calls attempted forms the basis of a statistic called “grade of service”. While it is economically infeasible to build a network that would have no blocking, the Telcos are held accountable by the utility commissions to keep blocking below tariffed levels.
Guide to telephone terminology your station runs a contest) the other choke exchange users will be blocked because all trunks into the choke exchange will be busy. In the modern network, using CCIS signaling such as SS7, actual trunks are not used to convey “busy” or “all trunks busy” conditions. Thus blocking due to a station contest should not occur as the busy status in response to a call attempt is conveyed over the separate SS7 network.
106 | Appendix 2 by the end user. See NCTE and DSX1 number of trunks in the system. CSU/DSU- A device which incorporates the functions of a CSU (Channel Service Unit) and a DSU (Data Service Unit) Most commonly it interfaces between a Switched-56 or Dedicated Digital Service circuit and a user’s data equipment such as the Zephyr. DID Trunk- A Direct Inward Dialing Trunk. A trunk (channel) which can only receive calls.
Guide to telephone terminology DSX-1- Digital Cross Connect level 1 (USA & Canada, primarily). Defined as part of the DS1 (T1) specification and is a closely related signal. The type of signal switched by a Digital CrossConnect System (DACS). The FDL is stripped off at the DACS interface. DSX-1 is also the type of signal that arrives at the user side of a CSU on a T1 line. A DSX-1 cable is limited to 655 feet (200 meters). DTE- Data Terminal Equipment- When using serial communications such RS-232, V.
108 | Appendix 2 POTS lines (or a 2-wire intercom) to a four-wire system (separate send and receive paths) such as used in the pro-audio world. While this task is theoretically quite simple, the fact the impedance of most phone lines varies widely across frequency complicates matters. The Telos 10 telephone system was the first practical DSP based hybrid and applied the then brand-new technology to this problem. IEC - 1) InterExchange Carrier. “Long Distance” carrier. Handles Interlata and interstate calls.
Guide to telephone terminology LEC- Local Exchange Carrier. Your local telephone service provider which is either an RBOC or an Independent. In other words, a traditional phone company. In contrast to CLEC or IEC. Line- An electrical connection between a telephone service provider’s switch (LEC or CLEC) and a telephone terminal or Key system. An electrical connection between a telephone service provider’s switch and another switch is technically called a trunk.
110 | Appendix 2 the street” who compare the coded audio to the original and grade the relative quality. MSN/DN 1&2 (Zephyr Xstream)- The Telco menu selections on the Xstream where the MSN (Euro & INS 64 ISDN) or 7 digit Directory Numbers (USA ISDN) can be entered during set up. The Zephyr Xstream generally does not require that these numbers be present. See Directory Number and MSN. MSN- Multiple Subscriber Number (Euro ISDN). This is a telephone number associated with an ETS 300 BRI line.
Guide to telephone terminology | 111 tom ISDN and ISDN Protocol. interface. Also known as the S passive bus. RBOC- Regional Bell Operating Company. (USA) One of the regional companies formed when AT&T was forced out of the local telephone business. Each RBOC (or “baby bell”) owns a number of the former “Bell Operating Companies”. The Bell Operating Companies are the traditional local phone companies (pre-1984), except where one’s service is from an “Independent” (non bell) telephone company or a CLEC.
112 | Appendix 2 Standards. SS7 does. It allows for substantially flexibility and power in dynamically routings calls. An SS7 database lookup is how a call to a mobile telephone user can handled transparently despite the fact that the user’s location may change. Also used to determine what carrier should handle a given toll free call. See also CCIS. Station Line – A telephone circuit from a PBX to a telephone on that PBX. Since this is a telephone-to-switch connection it is considered to be a “line”.
Guide to telephone terminology | 113 Tie Line- See Tie Trunk. perfection! Tie trunk- A Trunk between two PBXs. Note, a tie line is a dedicated circuit, not a switched circuit. See Trunk. U Interface- The interface between the ISDN “BRI” line and the “NT1”. ANSII standards for the US call for 2B1Q line coding, which is also used in some other places (though not necessarily).
114 | Appendix 2
| 115 A3 USA ISDN Ordering Guide This section applies to users in Canada & USA and is intended to help you when it comes time to order your ISDN lines. We assume you are familiar with ISDN’s basic concepts. If you have not read the ISDN section in the manual, doing so now will help you better understand the information that follows. If you know who to call and you are ready to provide complete information, the ISDN ordering process can be simple and straightforward.
116 | Appendix 3 regard for such arcana as 5ESS, DMS100, CSV/CSD, SPIDs, etc. Unfortunately, this is not always the case. At their central offices, the telephone companies use either AT&T/Lucent 5ESS, Northern Telecom DMS100, or Siemens EWSD switching equipment. While each will work with the Nx12, there are some differences which need to be taken into account when lines are ordered and used.
USA ISdn ordering guide | 117 with an audio codec such as the Zephyr or Zephyr Xstream, then CSD should be ordered as it is required for audio codec calls. CSV is for interworking with voice phone service and allows ISDN to interwork with analog phone lines and phones. You will be ordering one or more ISDN BRI 2B+D circuits with CSV (required) and CSD (optional) on each B channel. NT1s The ISDN standard specifies two reference points, the U and the S interfaces.
118 | Appendix 3 ISDN BRI LINE ORDER To: Telephone Company USA & Canada Telos Nx12 Attention: ________________________________ From Company: _______________________________________ Address: ________________________________________________ City/State/ZIP: __________________________________ Phone: ________________________ Contact:______________________________ Location for line Company: _______________________________________ Address: ________________________________________________
USA ISdn ordering guide | 119 □ No hunt groups You may call the manufacturer of the Nx12, Telos Systems, at +1 (216) 241-7225 for any additional required information about ISDN compatibility. Ask for ISDN Customer Support. PROTOCOL: National ISDN-1 From AT&T 5ESS, Northern Telecom DMS100, and Siemens EWSD. If you use IOC Capability Packages, please use Capability Package ‘S’ unless otherwise specified.
120 | Appendix 3 Give us: ♦♦ Two SPID numbers, depending upon number of active B channels ♦♦ Two Directory Numbers PROTOCOL: AT&T Point-to-Point (Custom) Software version 5E4.2 and above.
| 121 A4 Euro-ISDN Ordering Guide This section applies to users in Europe and other countries where the Euro-ISDN ETS 300 standard is supported (much of South America, Mexico, etc). Since there are virtually no options when ordering Euro ISDN this section is probably not needed, however we thought we could help out by summarizing what you will require.
122 | Appendix 3 Recall that each ISDN BRI has two possible B channels. It is possible to order a line with one or both of the B channels enabled – and each may be enabled for voice and/or data use. Phone terminology for the class of service is CSV for Circuit Switched Voice and CSD for Circuit Switched Data. (In contrast to PSD, Packet Switched Data, which is possible, but irrelevant to our needs.) CSD is not required for Telos Nx12 connections.
ISDN BRI LINE ORDER ETS-300 Euro-ISDN Telos Nx12 To: Telephone Company Attention: ________________________________ From Company: _______________________________________ Address: ________________________________________________ City/State/ZIP: __________________________________ Phone: ________________________ Contact:______________________________ Location for line Company: _______________________________________ Address: ________________________________________________ City/Sta
