Trumpcard Data/Fax Modem User’s Guide and Reference
Copyright Information in this document is subject to change without notice. Copyright 1996-1997 by Ositech Communications Inc., Guelph, Ontario, Canada. Ositech Communications Inc. shall not be liable for technical or editorial errors or omissions contained herein; nor for incidental or consequential damages resulting from the furnishing, performance, or use of this material. Trumpcard is a trademark of Ositech Communications Inc. P/N: 614005-001 Revision 3.
Preface This guide provides installation and operating instructions for the Ositech Trumpcard 33600 or 28800 Data/Fax Modem PC Card. The Trumpcard Modem is a PCMCIA Type II Modem with no external controls or indicators. To operate the Modem, you require a communications software package. ‘PCMCIA Card’ and ‘PC Card’ are used interchangeably throughout this manual. Both terms refer to the Ositech Trumpcard Data/Fax Modem PC Card.
FCC Notice 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 installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
U.S. Regulations Governing the Use of Modems This equipment complies with Part 68 of the FCC rules. Located on the Modem is a label that contains, among other information, the FCC Registration Number and Ringer Equivalent Number (REN) for this equipment. Upon request, you must provide this information to your telephone company. The REN is useful to determine the quantity of devices you may connect to your telephone line and still have all of those devices ring when your telephone number is called.
Before installing the equipment, ensure that it is permissible to be connected to the facilities of the local telecommunications company. The equipment must also be installed using an acceptable method of connection. In some cases, the company’s inside wiring associated with a single line individual service may be extended by means of a certified connector assembly (telephone extension cord). Be aware that the above conditions may not prevent degradation of service in some situations.
This product contains inactivated SPECTRUM CONNECTED cellular data communication technology, which requires a use license from Spectrum Information Technologies, Inc. No such license is provided with this product and activation without a use license is prohibited.
Contents Section One Introduction 1-1 Features ................................................................................................................ 1-2 Data Mode ......................................................................................................... 1-2 Facsimile Mode ................................................................................................. 1-3 Cellular Mode .............................................................................................
Section Four Modem Command Reference 4-1 Modem Command Guidelines .............................................................................. 4-2 Modem Command Summary ............................................................................... 4-4 Modem Command Descriptions ........................................................................... 4-6 Modem S Registers ........................................................................................... 4-34 Default Register Settings ......
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Introduction Section One Introduction Congratulations on your choice of an Ositech Trumpcard Data/Fax Modem! We believe you will find it a superior quality product that will meet or exceed your facsimile and data communication needs. The Trumpcard Modem can be used with most standard communications and facsimile packages. Refer to the communications package documentation for instructions to set up and configure your communications software to take advantage of the Trumpcard Modem’s features.
Section One Features Data Mode The Trumpcard Modem fully supports the following industry and ITU-T (formerly CCITT) standards. 1-2 • V.FC, ITU-T: V.34 33.6+28.8, V.32bis, V.32, V.22bis, V.22, V.23, V.21, and Bell 103/212A operation • Data rate adaptation to 230400, 115200, 57600, 38400, 28800, 26400, 24000, 21600, 19200, 14400, 12000, 9600, 7200, 4800, 2400, 1200, and 300 bps • Enhanced “AT” compatible command set • ITU-T V.
Introduction Facsimile Mode The Trumpcard facsimile supports Class 1 and Class 2 AT fax commands for facsimile communications. To use the facsimile, you must have a facsimile communications software package. • Group 3 facsimile send/receive speeds of 14400, 9600, 7200, 4800, and 2400 bps • ITU-T V.17, V.29, and V.
Section One Unique Features The Trumpcard Data/Fax Modem has a number of unique features, designed to integrate with today’s portable and laptop technology, and computer user’s needs.
Introduction Industry Standards V.21 V.21 refers to a standard set by ITU-T for 300 bps Modem communications. North American manufactured modems usually follow the Bell 103 standard. V.22 V.22 refers to the standard set by ITU-T for 1200 bps Modem communications. The V.22 standard is compatible with the Bell 212A standard used in North America. V.22bis V.22 bis refers to the standards set by ITU-T for 2400 bps Modem communications. V.23 V.
Section One V.42 V.42 refers to the standard set by ITU-T for error control protocol. The V.42 standard also supports the MNP error correction protocol standard. V.42bis V.42 bis refers to the standard set by ITU-T for data compression. Data compression can only be used in conjunction with error correction. MNP 2, 3, and 4 MNP 2, 3, and 4 refers to an alternate standard for error correction protocol.
Hardware Installation Section Two Hardware Installation Follow the instructions to unpack and install the Trumpcard Modem on your computer. Preparing for Installation To install the Trumpcard Modem, you require the accompanying diskettes and the following items: • A computer equipped with a PCMCIA Release 2.x, Type II PC Card slot. • PCMCIA Card and Socket Services Version 2.x or higher, installed. This is optional since the Trumpcard can be operated without Card and Socket Services.
Section Two Installing the Trumpcard Modem The Trumpcard Modem can be inserted into a computer whether the power is ON or OFF. Follow these steps: • Orient the Trumpcard Modem so that the 68-pin connector is next to the PCMCIA slot of the computer. • Insert the Trumpcard Modem into the slot until it is firmly seated. Note: These are general installation instructions that apply to most computers.
Hardware Installation Connecting to the Telephone Network with a Direct Cable Connection The Trumpcard Modem may be directly connected to either a standard land based telephone line or to a cellular telephone using the cellular option kit. For cellular installation, refer to the installation instructions accompanying the cellular option kit.
Section Two Connecting to a Telephone Network through the Line Interface Module The Trumpcard Modem may be connected to a variety of telephone networks using the Line Interface Module, and the appropriate Adapter Cable. Contact Ositech for the latest list of countries supported. To connect the Trumpcard Modem to your telephone service using the Line Interface Module, follow these steps: • Locate the Line Interface Module that has a PCMCIA Modem Adapter at one end.
Basic Modem Operation Section Three Basic Modem Operation This section provides basic instructions for getting started with your Modem.
Section Four Before You Begin Before you begin using the Modem, you should configure your communications software to work with the Trumpcard. For specific configuration instructions, refer to the documentation that came with your communications software. You will likely require the following information: • Communications Port: The Trumpcard is compatible with either Com1, COM2, COM3 or COM4, and is dependant on the enabling software.
Basic Modem Operation Operating the Trumpcard Using AT Commands In order to communicate with the Modem, the Modem must be in command mode. In addition, you must have your communications software operating and communicating interactively with the Modem. The Trumpcard will automatically be in command mode after you turn on your computer. Any commands you issue to the Trumpcard must be prefixed with AT (or at).
Section Four Making an Outgoing Call To make an outgoing call manually, enter: ATD 234 3456 [ENTER] Where 234 3456 is the telephone number of the remote Modem. Spaces on the command line are ignored by the Modem. There are a number of options that you can add to the dial command. Some of the more common are listed here. Refer to the ATD command for more information.
Basic Modem Operation Re-Dialling the Last Number To re-dial the last number you called, enter: ATDL [ENTER] Storing a Number If there are some numbers that you call regularly, you may want to store them so that you do not have to enter the whole number every time you call. You can store up to four numbers (in locations 0-3). Each number can be up to 36 characters long.
Section Four Short Form 12 13 14 15 16 17 18 19 22 Long Form CONNECT CONNECT CONNECT CONNECT CONNECT CONNECT CONNECT CONNECT CONNECT Description 9600 7200 12000 14400 19200 38400 57600 115200 75TX/1200RX 23 CONNECT 1200TX/75RX 33 35 40 44 FAX DATA CARRIER 300 CARRIER 1200/75 45 CARRIER 75/1200 46 47 48 49 50 CARRIER CARRIER CARRIER CARRIER CARRIER 51 CARRIER 12000 52 CARRIER 14400 53 CARRIER 16800 54 CARRIER 19200 55 CARRIER 21600 56 CARRIER 24000 57 CARRIER 26400 58 CARRIER 28800
Basic Modem Operation Short Form 62 63 64 66 67 69 76 77 80 81 Long Form CONNECT 24000 CONNECT 26400 CONNECT 28800 COMPRESSION CLASS 5 COMPRESSION V.42BIS COMPRESSION NONE PROTOCOL NONE Description connection at 24000 bps * connection at 26400 bps * connection at 28800 bps * MNP data compression V.42bis data compression no compression connection with Modem that does not support MNP or V.42 PROTOCOL: LAP-M connection with Modem that supports V.
Section Four Receiving an Incoming Call Your communications software may be able to accept incoming calls automatically or semiautomatically. Refer to your communications software documentation for information. If your communications software can not automatically accept incoming calls, start your communications software and follow these instructions to receive a call. You can set your Trumpcard Modem to auto-answer incoming calls using the S0 register.
Basic Modem Operation Modem Configurations for Cellular Operation The Trumpcard’s performance will be improved by modifying the standard (factory default) configuration. For reliable communications, it is also recommended that the Modem to which you are connecting also be MNP10 compatible. Using a MNP10 link will allow negotiation of the Modem link speeds based on current line conditions.
Section Four Cellular Phone Configuration The placement of the cellular phone and antenna is critical to the success of the communications session. The antenna placement should be adjusted until the maximum signal strength is observed on the cellular phone signal indicator. Under some circumstances a special high gain antenna may improve performance.
Basic Modem Operation The initialization string sent to the Trumpcard for cellular connections may not result in the optimum connection when used for landline connections. If possible, set the communications software to send the desired initialization string based on the type of connection being used. Refer to the section Receiving an Incoming Call for details on how to command the Modem to receive incoming calls.
Section Four 4 - 12 Trumpcard 14400/28800 Modem
Modem Command Reference Section Four Modem Command Reference This section of the manual describes the AT commands that the Trumpcard modem supports. This information includes command parameters, defaults, result codes, and often examples. These commands cannot be entered (and sent) to the modem from the operating system command line. You must use a communications software package to talk to the modem.
Section Four Modem Command Guidelines Each of the following modem command descriptions has a list of possible parameters with their default values. The modem loads the default values at initialization (when you turn the power on or you issue the ATZ command). If you exclude a mandatory parameter, the modem assumes a zero value. Invalid commands or parameters return the ERROR message. The command line may contain a single command or a series of commands.
Modem Command Reference If you enter a parameter for the AT\ or AT% commands that is out of range, the upper limit is stored and no ERROR message is reported. Following the modem command description assume OK and ERROR as valid responses for almost all of the commands. Other valid responses for a command, if any, are discussed with the command descriptions.
Section Four Modem Command Summary Command Title Default A/ Re-execute Command none A Answer none Bn Set ITU-T or Bell Mode 1* Dn Dial T En Command Echo 1 * Fn Select Line Modulation (14400) none +MS Select Line Modulation (28800) none Hn Switch-Hook Control none In Identification none Ln Speaker Volume 2 * Mn Speaker Control 1 * Nn Automode Detection 1 * On Return To The On-Line State none P Set Pulse Dial As Default none * Qn Result Code Display 0 * Sn Read
Modem Command Reference Command Title Default &Mn Communication Mode (&Qn) * &Pn Dial Pulse Ratio 0 * &Qn Communication Mode 5 * &Rn RTS/CTS Option 0 * &Sn DSR Option 0 * &Tn Test And Diagnostic 4 * &V View Configuration and User Profiles none &Wn Store User Profile none &Yn Designate Default User Profile 0 * &Zn=x Store Phone Number none \Bn Transmit Break 3 \Gn Modem-to-Modem Flow Control 0 \Kn Break Control 5 \Nn Operation Mode Control none * %Cn Compression C
Section Four Modem Command Descriptions A/ — Re-execute Parameters none Default none Re-executes the most recent AT command string. The principle application of this command is to place another call (e.g., Dial command) that failed, to connect due to a busy line, no answer, or a wrong number. This command must appear alone on a command line and must be terminated by the "/" character. (An [ENTER] should not be entered to terminate the command.
Modem Command Reference Bn — Set ITU-T or Bell Mode Parameters 0, or 1 Default 1 Selects between ITU-T and Bell modes for a 1200 bps connection. Examples ATB0 Selects ITU-T V.22bis and V.22 standards for communication at 2400 bps and 1200 bps. ATB1 Selects Bell 212A for communication at 1200 bps Dn — Dial Parameters 0-9 A B C D * # L P T R & ! @ W , ; ^ S=n Default P This must be the last command on a command line.
Section Four @ Causes the modem to listen for 5 seconds of silence. If a 5 second silence has not been detected within the period specified in S7 (default = 30 seconds), the modem disconnects and returns the NO ANSWER result code. If it detects a busy signal, it returns a BUSY result code. If the 5 seconds of silence is detected, then the modem continues dialling the dial string. W Wait For Dial Tone Before Dialling.
Modem Command Reference Result Codes NO DIAL TONE If X2 or X4 is selected and 1 second of dial tone is not detected within 5 seconds; or if W dial modifier is used and 3 seconds of dial tone is not detected within the time specified by S7 BUSY If busy is detected, and X3 or X4 is selected or if dial modifier is used NO ANSWER If “@” dial modifier is used and 5 seconds of silence is not detected within the time specified by S7 CONNECT XXXX If a connection is established NO CARRIER If a connection c
Section Four ATF3 Permit V.23 1200/75 bps connections only ATF4 Permit V.22 1200 bps connections only ATF5 Permit V.22bis 2400 bps connections only ATF6 Permit V.22bis or V.32 4800 bps connections only ATF7 Permit V.32bis or V.32 7200 bps connection only ATF8 Permit V.32bis or V.32 9600 bps connections only ATF9 Permit V.32bis 12000 connections only ATF10 Permit V.32bis 14400 bps connections only ATF13 Permit V.
Modem Command Reference 9 V.32 9600 or 4800 10 V.32bis 14400, 12000, 9600, 7200, or 4800 11 V.34 28800, 26400, 24000, 21600, 19200, 16800, 14400, 12000, 9600, 7200, 4800, or 2400 64 Bell 103 300 69 Bell 212 1200 74 VFC 28800, 26400, 24000, 21600, 16800, or 14400 2. is an optional numeric value which enables or disables automatic modulation negotiation using V.8 or V.32bis annex a.
Section Four In — Identification Parameters 0-6 Default 0 Returns the product code, returns the checksum of the firmware ROM, or computes the checksum of the firmware ROM and reports its error status. The product code contains 3 digits. The checksum result consists of three ASCII numeric characters followed by a carriage return and a line feed. The error status line is either OK or ERROR.
Modem Command Reference Examples ATM0 Speaker is always off ATM1 Speaker is on during call establishment, but off when connected to a remote modem ATM2 Speaker is always on ATM3 Speaker is off when dialling or connected to a remote modem, but on during call answering Nn — Automode Detection Parameters 0 or 1 Default 1 This command enables or disables automode detection Examples ATN0 Automode detection is disabled.
Section Four Result Codes CONNECT XXXX If a connection is established NO CARRIER If retrain is not successful in the time specified by S7 P — Set Pulse Dial as Default Parameters none Default none Causes the modem to assume that all subsequent dial commands are pulse dialled. The user may omit the "P" from the dial strings. Qn — Result Code Display Parameter 0 or 1 Default 0 Determines whether or not the modem returns the result codes (see Xn command).
Modem Command Reference Examples ATSn Establishes S-register n as the default register ATSn=x Set S-register n to the value x ATSn? Reports the value of S-register n T — Set Tone Dial as Default Parameters: none Default: none Causes the modem to assume that all subsequent dial commands are tone dialled. The user may omit the “T” from the dial string. Vn — Result Code Form Parameters 0 or 1 Default 1 Selects whether the modem returns long form or short form result codes.
Section Four Xn — Extended Result Codes Parameters 0, 1, 2, 3, or 4 Default 4 Determines whether the modem responds to dial tone and busy signals, and how it displays result codes for CONNECT messages. When the modem ignores dial tone, it waits for a time delay given by register S6 (default = 2 seconds) and then dials regardless of presence or absence of dial tone; this is called blind dialling. Examples 4 - 16 ATX0 Modem ignores dial tone and busy signal.
Modem Command Reference Result Codes — Q0, V1, Wn, S95 Short Form Long Form n Value in ATXn Command 0 1 2 3 4 0 OK X X X X X 1 CONNECT X X X X X 2 RING X X X X X 3 NO CARRIER X X X X X 4 ERROR X X X X X 5 CONNECT 1200 X X X X 6 NO DIAL TONE 7 BUSY 8 NO ANSWER 9 X X X X X X X X CONNECT 0600 X X X X 10 CONNECT 2400 X X X X 11 CONNECT 4800 X X X X 12 CONNECT 9600 X X X X 13 CONNECT 7200 X X X X 14 CONNECT 12000 X X
Section Four Short Form Long Form n Value in ATXn Command 0 1 2 3 4 51 CARRIER 12000 X X X X X 52 CARRIER 14400 X X X X X 53 CARRIER 16800 * X X X X X 54 CARRIER 19200 * X X X X X 55 CARRIER 21600 * X X X X X 56 CARRIER 24000 * X X X X X 57 CARRIER 26400 * X X X X X 58 CARRIER 28800 * X X X X X 59 CONNECT 16800 * X X X X 61 CONNECT 21600 * X X X X 62 CONNECT 24000 * X X X X 63 CONNECT 26400 * X X X X 64 CONNECT 28800 *
Modem Command Reference Yn — Control Long Space Disconnect Parameters 0 or 1 Default 0 Enable/disable the generation and response to long space disconnect. Examples ATY0 Disable long space disconnect ATY1 Enable long space disconnect. In non-error correction mode, a four second space will be sent prior to going on-hook. In error correction mode, the modem will be on-hook when it receives a continuous break greater than 1.6 seconds.
Section Four &Dn — DTR Option Parameters 0, 1, 2, or 3 Default 0 Determines actions taken by the modem in relation to the Data Terminal Ready (/DTR) signal of the serial port. The effect of /DTR loss depends upon the &D and &Q (&M) commands.
Modem Command Reference &Gn — Set Guard Tone Parameters 0, 1, or 2 Default 0 Normally, controls the generation of guard tone. This command is not implemented; however, the command structure is provided for application compatibility. &Jn — Telephone Jack Selection Parameters 0 or 1 Default 0 The command structure is provided for application compatibility only and performs no function.
Section Four &Ln — Line Type Parameters 0 or 1 Default 0 Controls selection of leased line or dial-up line. Although the modem has only a single line connection, the power level is changed when setting leased line operation. Examples AT&L0 Dial-up line AT&L1 Leased line &Mn — Communication Mode Parameters 0 Default None Same as &Q0. &Pn — Dial Pulse Ratio (disabled for the U.S.
Modem Command Reference Examples AT&Q0 Selects asynchronous operation in the Direct mode. In this mode, the communications software speed must match the telco line speed. AT&Q4 Selects AutoSync operation. Is used in conjunction with communications software that is compatible with the Hayes Synchronous Interface (HSI). AT&Q5 Selects error correction mode. Modem negotiates an error-correction link.
Section Four &Tn — Test and Diagnostic Parameters 0, 1, or 3 through 8 Default 4 Selects the test command. Test commands must be initiated in the command mode with asynchronous operation in the Direct mode selected (&Q0) at a speed of less than 14400 or 28800 (28800 version only). A telco line connection must be established prior to initiating digital loopback tests. If these conditions are not met, the modem issues the ERROR result code.
Modem Command Reference AT&T6 Initiates remote digital loopback. The characters received from the local communications software are transmitted to the remote modem and looped back from the remote modem to the local modem. This test verifies the working condition of the path between the local communications software and the remote modem. AT&T7 Initiates remote digital loopback with self test.
Section Four STORED PROFILE 1: B1 E1 L2 M1 N1 V1 W0 X4 Y0 &C0 &D0 &G0 &JO &K3 &Q5 &R0 &S0 &T4 &X0 S00:000 S02:043 S06:002 S07:030 S08:002 S09:006 S10:014 S11:095 S12:050 S18:000 S36:005 S37:000 S40:105 S41:135 S46:138 S95:000 TELEPHONE NUMBERS: 0= 1= 2= 3= &Wn — Store User Profile Parameters 0 or 1 Default none Saves the current configuration into non-volatile memory as one of two user profiles.
Modem Command Reference &Zn=x — Store Phone Number Parameters n = 0, 1, 2, or 3, x = dial string Default none Stores a 36-digit dial string (x) in the specified entry (n) for later dialling. (See DSn command.) \Bn — Transmit Break Parameters 1 through 9 (If n = 0, the default value is used; if n is greater than 9, 9 is used.) Default 3 When this command is entered during a non-error correction connection, the modem sends a break signal to the remote modem.
Section Four Examples When a BREAK is received from the communications software when connected to a remote modem, the modem takes the following action: AT\K0,2,4 Modem enters the command mode (waiting for AT) without sending a BREAK to the remote modem AT\K1 Modem clears the terminal and modem buffers and sends a BREAK to the remote modem AT\K3 Modem does not clear the buffers but sends a BREAK to the remote modem AT\K5 Modem sends a BREAK to the remote modem in sequence with any transmitted data.
Modem Command Reference \Nn — Operation Mode Control Parameters 0, 1, 2, 3, 4, or 5 Default 3 Selects the operating mode the modem uses while connected (see &Qn command). Examples AT\N0 Selects Normal (speed buffering) mode. This option takes effect at physical connection time. AT\N1 Same as AT\N0. AT\N2 Selects reliable link mode. This defines the modemto-modem connection to require error correction connection. If an attempt to establish the reliable link fails, the modem disconnects.
Section Four %En — Enable/Disable Line Quality Monitor Parameters 0-3 Default 2 Controls whether or not the modem will automatically monitor the line quality and request a retrain, or fall back when line quality is insufficient, or fall forward if line quality is sufficient.
Modem Command Reference Returns the high-order byte of the calculated Eye Quality Monitor (EQM) value. The value for a normal connection ranges from about 0 to 2 and approaches 8 for a progressively poorer connection. -Kn — MNP Extended Services Parameters 0, 1 or 2 Default 1 Enables the modem to investigate the capabilities of the modem's MNP10 capacity, and determine whether a V.42 LAPM connection will be converted to an MNP connection.
Section Four Enables adjustment of the transmit levels based on attenuation and possibly, signal-to-noise ratio of the line to minimize the "clipping". The transmit levels are adjusted only when retrain and speed shift are performed. Examples AT)M0 No transmit level adjustment, fixed at -10 dBm [adjust power level if remote is set to )M1] AT)M1 Adjust transmit level during retrain speed shift :En — Compromise Equalizer Parameters 0 or 1 Default 1 Enables or disables the V.32 compromise equalizer.
Modem Command Reference . AT@M30 -30dBm AT@M31 -31dBm [n init string] — Event Based Command Parameters n = 0 or 1 init string = any valid AT command(s) except Z (reset) n=0 Defaults init string = NULL The event based command is unique in that it allows single or multiple AT commands to be associated with an event identified by an event identifier “n”.
Section Four The above command processes the &F&C1&D2&S1 once when the command line is first entered, the S95=18 whenever operating as a land based connection and S95=44)M1*H2:E0 whenever operating as a cellular based connection. AT[] or AT[0] The above command clears any command(s) associated with event 0 (land based connection). Modem S Registers The S registers are summarized below along with their default values.
Modem Command Reference S9 * Carrier Detect Response Time 6 S10 Lost Carrier To Hang Up Delay 14 S11 * DTMF Tone Duration 95 S12 * Escape Code Guard Time 50 S13 Reserved none S14 * Bit Mapped Options ** 138 S15 Reserved none S16 Bit Mapped Test Options ** 0 S17 Reserved none S18 * Test Timer 0 S19 Reserved 0 S20 Reserved none S21 * Bit Mapped Options ** 4 S22 * Bit Mapped Options ** 117 S23 * Bit Mapped Options ** 55 S24 Sleep Inactivity Timer 10 S25 * Delay
Section Four S95 * Extended Result Codes 0 * Register value may be stored in one of two user profiles with the AT&Wn command. ** Writing to bit mapped options registers, although possible, can result in unreliable and unpredictable operation.
Modem Command Reference Register Descriptions S0 — Number of Rings Till Auto-Answer Range 0-255 rings Default 0 Establishes the number of rings required before the modem answers the incoming calls. Setting this register to zero disables auto-answer mode. S1 — Ring Counter Range 0-255 rings Default 0 Number of rings which the modem detects before it answers a call. If no rings occur over an eight second interval, the register is cleared.
Section Four S5 — Backspace Character Range 0-32, ASCII decimal Default 8 (Backspace) Sets the character recognized as a backspace. Pertains to asynchronous operation only. The modem will not recognize the Backspace character if it is set to a value that is greater than 32 ASCII. This character can be used to edit a command line.
Modem Command Reference Default 2 Sets the length of time to pause when the modem encounters the "Pause During Dial" call progress feature, i.e., the comma (,). S9 — Carrier Detect Response Time Range 1-255 tenths of second Default 6 (0.6 seconds) Determines how long a carrier signal must be present before the modem recognizes it as a carrier and turns on /RLSD. As this time is increased, there is less chance to detect a false carrier due to noise from the telco line.
Section Four S18 — Test Timer Range 0-255 seconds Default 0 Sets the length of time the modem conducts a test before returning to the command mode. If this register is zero, the test will not automatically terminate; the test must be terminated from the command mode by issuing an &T0 or H command. S24 — Sleep Inactivity Timer Range 0-255 seconds Default 10 seconds Sets the length of time, in seconds, that the modem will wait before entering power down sleep mode.
Modem Command Reference S32 — XON Character Range 0-255 Default 17 Sets the value of the XON character. S33 — XOFF Character Range 0-255 Default 19 Sets the value of the XOFF character S36 — LAPM Failure Control Range 0-7 Default 7 This register is used when the S48 register contains the value 128 and an attempted error correction link fails. These fallback options are initiated immediately upon connection if S48 = 128.
Section Four S36 = 4 An MNP connection is attempted, and if it fails, the modem disconnects. S36 = 5 An MNP connection is attempted, and if it fails, a Direct mode connection is established. S36 = 6 Reserved. S36 = 7 An MNP connection is attempted, and if it fails, a Normal mode connection is established. S37 — Desired Telco Line Speed Range 0-12 Default 0 This register determines the desired telco line speed if the N0 command is in effect.
Modem Command Reference S38 — Delay Before Forced Disconnect Range 0-255 seconds Default 20 This register specifies the delay between the modem's receipt of the Hangup (H) command to disconnect (or ON-to-OFF transition of /DTR if the modem is programmed to follow the signal) and the disconnect operation. For an error-correction connection, this register can be used to ensure that data in the modem buffer is sent before the modem disconnects.
Section Four S48 — V.42 Negotiation Action Range 0,7, or 128 Default 7 The V.42 negotiation process determines the capabilities of the remote modem. However, when the capabilities of the remote modem are known and negotiation is unnecessary, the process can be bypassed if desired. If an invalid number is entered, it is accepted into the S register, but S48 will act as if 128 is entered. S48 = 0 Disable negotiation; bypass the detection and negotiation phases; and proceed with LAPM.
Modem Command Reference S95 — Extended Result Codes The bits in this register can be set to override some of the Wn command options. A bit set to a 1 in this register will enable the corresponding result code regardless of the Wn setting.
Section Four Facsimile Commands Fax commands are listed here only for reference. Use of these commands should be limited to fax application software. If you have additional questions about the Trumpcard facsimile operation, please contact Ositech (our address and telephone number are in the front of this manual).
Modem Test Procedures Section Five Modem Test Procedures This section of the manual describes the different tests that you can perform when you are trying to find the source of a problem.
Section Five Local Modem Self-Test To run a local self-test: 1. Put the Modem into interactive or local mode. Refer to the communications software manual for this information. 2. Enter AT [ENTER]. The Modem will respond with OK. If you cannot see the letters you entered, the local Modem echo is OFF. To turn on the local Modem echo, enter ATE1 [ENTER]. If double characters appear on the screen, both the Modem and software are set to local echo ON. To set the Modem to local echo off, enter ATE0 [ENTER].
Modem Test Procedures Local Analog Loopback This test checks the path between the local Modem and the PC. The test is only functional when the Modem is in direct mode (&Q0) and the COM port baud rate is set to 14400 bps (Trumpcard 14400) / 28800 bps (Trumpcard 28800) or less. To start this test, the Modem must be in command mode. To run this test: 1. Enter AT&T1 [ENTER]. Wait until the Modem returns a CONNECT message. 2. Enter a test message. For example, “This message should be echoed back.
Section Five Local Analog Loopback with SelfGenerated Pattern This test verifies the integrity of the local Modem transmit and receive circuits. The test is only functional when the Modem is in direct mode (&Q0) and the COM port baud rate is set to 14400 bps (Trumpcard 14400) / 28800 bps (Trumpcard 28800) or less. For this test, the Modem must be in command mode. To start the test: 1. Enter AT&T8 [ENTER] and wait for a while. The Modem will not respond visibly. 2.
Modem Test Procedures Remote Digital Loopback This test checks the local and remote modems and the telephone circuit. The test is only functional when the Modem is set to direct mode (&Q0) and the COM port baud rate is set to 14400 bps (Trumpcard 14400) / 28800 bps (Trumpcard 28800) or less. A message is sent to the remote unit by the Modem. The remote unit loops the test message back. The received message is then compared with the previously transmitted message to verify the connection.
Section Five Remote Digital Loopback with SelfGenerated Pattern This procedure tests the remote Modem port, the telephone line, the local serial and Modem ports. The test is only functional when the Modem is in direct mode (&Q0) and the COM port baud rate is set to 14400 bps (Trumpcard 14400) / 28800 bps (Trumpcard 28800) or less. This test is similar to the Remote Digital Loopback test.
Modem Test Procedures Local Digital Loopback This test is used to verify the communications link and the remote Modem, and is only functional when the Modem is in direct mode (&Q0) and the COM port baud rate is set to 14400 bps (Trumpcard 14400) / 28800 bps (Trumpcard 28800) or less. To run this test: 1. Establish a connection with a remote Modem. 2. Enter AT&T3 [ENTER] to put the Modem into the local digital loopback mode. 3. Instruct the remote Modem operator to enter a message.
Section Five Testing Modem Memory The I command can be used to obtain information on the modem’s memory and perform a checksum test. Product Information This test displays the modem’s product information. 1. Enter ATI3 [ENTER]. The Modem will respond with a line identifying the Modem and its capabilities. Use this information when calling Ositech for technical support. ROM Checksum Test This test compares the ROM checksum result with a stored value. 1. Enter ATI2 [ENTER] to run this test.
