US Robotics 56K USB Modem User Manual
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US Robotics 56K USB Modem User Manual

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56K USB Modem
User Guide
R46.1999.00
rev 1 5/08

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Summary of Contents for US Robotics 56K USB Modem

  • Page 1 56K USB Modem User Guide R46.1999.00 rev 1 5/08...

  • Page 3: Table Of Contents

    56K USB Modem User Guide Contents Introduction ..........1 Physical Features .
  • Page 4 56K USB Modem User Guide Uninstallation ......... 125 Troubleshooting .
  • Page 5 56K USB Modem User Guide 56K USB Modem User Guide U.S. Robotics Corporation 935 National Parkway Schaumburg, Illinois 60173-5157 No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as a translation, transformation, or adaptation) without written permission from U.S.
  • Page 6 56K USB Modem User Guide...

  • Page 7: Introduction

    Introduction English The USRobotics 56K USB Modem delivers the performance and reliability USRobotics is known for, in a compact, flexible form factor. This controller-based modem integrates powerful communications processing functions into the modem itself, for assured performance without sapping your computer’s processing power.

  • Page 8: Physical Features

    56K USB Modem User Guide Physical Features U S R o b o t i c PW R D A TA Connects the modem to Connects the modem to your your computer. telephone line. State Condition Solid Receiving power and driver is properly installed.

  • Page 9: Installation Instructions

    1. Use the provided telephone cord to connect the phone jack on the modem to an analogue telephone wall jack. U S R o To connect a telephone to the same line as the 56K USB Modem for V.92 fea- b o ti cs DAT A tures such as “Modem on Hold”, you will need to use a telephone line splitter...

  • Page 10: Windows Xp

    56K USB Modem User Guide 4. When prompted, insert the USRobotics Installation CD-ROM into your CD-ROM drive. If a driver CD was not provided or the driver was downloaded from www.usr.com, browse to the folder where the drivers were downloaded.

  • Page 11: Windows 2000

    56K USB Modem User Guide 8. The PWR LED on the modem will light. Congratulations. You have successfully completed the installation procedure. Please register your 56K USB Modem at www.usr.com/productreg/. Windows 2000 You must be logged in as an administrator in order to install this modem.
  • Page 12 56K USB Modem User Guide 3. Double click USRobotics 56K USB Modem.pkg to launch the installer, and follow the on-screen instructions. 4. Go to Apple > System Preferences > Network. If prompted, click OK. 5. Select USB Modem from the Show menu .

  • Page 13: Command Reference

    56K USB Modem User Guide Command Reference How to Use These Commands USRobotics’ AT command set for controller-based modems consists of commands based on data, FAX, and voice communications. The commands presented in this manual follow the conventions set by ITU-T Recommendation V.250 (05/99), which standardized many of the common AT extensions.
  • Page 14 56K USB Modem User Guide result code. Command Reference - 8...

  • Page 15: Sample Command

    56K USB Modem User Guide Sample Command E<value>—Command Echo Use this command to instruct the modem to echo characters sent to it. When the echo feature is selected, characters sent to the modem are sent back to the host and displayed on the monitor.

  • Page 16: S Register Conventions

    56K USB Modem User Guide S Register Conventions S registers contain parameters used by the modem. The presentation format for an S register is very similar to the format used for an AT command. Each S register has a standard layout consisting of the following: •...

  • Page 17: Synchronous Mode And V.80 At Commands

    56K USB Modem User Guide Synchronous Mode and V.80 AT Commands USRobotics’ controller-based modem AT command set supports synchronous command mode and most of the commands defined in ITU-T Recommendation V.80, which defines in-band modem control and synchronous data modes for asynchronous host systems. Recommendation V.80 addresses two types of commands: •...
  • Page 18 56K USB Modem User Guide escape sequence character. A/—Repeat Last Command Use this command to repeat the last AT command. The modem repeats the command currently in the command buffer. Do not use the AT prefix with this command. Do not conclude the command with a terminating character such as enter.
  • Page 19 56K USB Modem User Guide C<value>—Carrier Control Controller-based modems support this command to ensure backwards compatibility with communication software that issues the C1 command. However controller-based modems do not support the C0 command. The C0 command may instruct some other modems not to send carrier (i.e., it puts them in receive-only mode).
  • Page 20 56K USB Modem User Guide Table 5. Dial Modifiers Dial pause Instructs the modem to pause before processing the next character in the dial string. Register S8 (S8—Pause Time for Comma Dial Modifier on page 98) determines the length of the pause.
  • Page 21 56K USB Modem User Guide Table 7. F<value> Commands Online data character echo disabled. H<value>—Hook Control This command instructs the modem to go on-hook to disconnect a call or go off-hook to make the telephone line busy. Result codes: •...
  • Page 22 56K USB Modem User Guide Final Receive Carrier Rate 49333 Protocol Negotiation Result LAPM Data Compression Result V42bis Estimated Noise Level Receive Signal Poser Level (–dBm) Transmit Signal Power Level (–dBm) Round Trip Delay (msec) Press any key to continue; ESC to quit...
  • Page 23 56K USB Modem User Guide Table 10. ATI11 Command Results(Continued) Result Description Receive Signal Power Level The received signal power, although labeled with units of –dBm, is only a (–dBm) relative measure for comparing calls to/from different locations. This value is valid only during a call.
  • Page 24 56K USB Modem User Guide M<value>—Speaker Control Use this command to turn the speaker on and off. Result codes: • OK if <value> = 0—3. ERROR if <value> ≠ 0—3. • Table 12. M<value> Commands Command Function Speaker is off.
  • Page 25 56K USB Modem User Guide Table 14. O<value> Commands Issues a rate renegotiation before returning to online data mode. * See +++ Escape Sequence section on page 11. P—Select Pulse Dialing Use this command to configure the modem for pulse dialing. All subsequent D<dial_string> commands use pulse dialing until either the T command or a tone dial modifier is received by the modem.
  • Page 26 56K USB Modem User Guide S<register number>=<value>—S Register Control Use this command to view or change an S-register. S-registers contain parameters used by the modem. This command has two forms, one to show the contents of the register and the other to change the contents of the register.
  • Page 27 56K USB Modem User Guide W<value>—Result Code Option Use this command to select the modems CONNECT message options. Result codes: • OK if <value> = 0—2. ERROR if <value> ≠ 0—2. • Table 19. W<value> Commands Command Function CONNECT result code reports DTE receive speed. Disables protocol result codes.
  • Page 28 56K USB Modem User Guide X<value> Option Result Codes Command Result Codes • • RING • ERROR • CONNECT • NO CARRIER • • RING • ERROR • CONNECT <RATE> • NO CARRIER • • RING • ERROR • CONNECT <RATE>...
  • Page 29 56K USB Modem User Guide Z<value>—Reset and Recall Stored Profile Use this command to make the modem go on-hook and restore the profile saved by the last &W command. Note: Both Z0 and Z1 restore the same profile (see &W<value>—Store Current Configuration on page 28).
  • Page 30 56K USB Modem User Guide &D<value>—Data Terminal Ready (DTR) Control Use this command to select the modem’s response to the data terminal ready (DTR) signal. The host system generates the DTR signal and supplies it to the modem. Result codes: •...
  • Page 31 56K USB Modem User Guide Table 28. &G<value> Commands Command Function &G0 Disables guard tone (default). &G1 Selects 550 Hz guard tone. &G2 Selects 1800 Hz guard tone. &J<value>—Auxiliary Relay Option This command is supported to ensure backward compatibility with communications software that issues the J0 command.
  • Page 32 56K USB Modem User Guide &P<value>—Pulse Dial Make-to-Break Ratio Selection Use this command to select the make-to-break ratio. This command is effective only for Japan. Result codes: • OK if <value> = 0—2. ERROR if <value>n ≠ 0—2. • Table 32. &P<value> Commands for Domestic Versions...
  • Page 33 56K USB Modem User Guide &T<value>—Self-Test Commands Use this command to perform diagnostic tests on the modem. Each test is designed to isolate a problem location when experiencing periodic data loss or random errors. Result codes: • OK if <value> = 0.
  • Page 34 56K USB Modem User Guide Blind Dial Pause 2 sec NoAnswer Timeout 50 sec "," Pause Time 2 sec Press any key to continue; ESC to quit. Option Selection AT Cmd No Carrier Disc 2000 msec DTMF Dial Speed 95 msec...
  • Page 35 56K USB Modem User Guide &Z<location>=<stored_number>—Store Telephone Number Use this command to store a dialing string. Controller-based modems can save four dialing sting. The format for the command is &Z<storage_location> = <dialing_string>. The dial string may contain up to 40 characters. The ATDS=<storage_location> command (D<dial_string>—Dial on page 13) dials using the stored string.
  • Page 36 56K USB Modem User Guide Table 39. \G<value> Commands Command Function The modem processes XON/XOFF flow control characters locally (default). The modem passes XON/XOFF flow control characters. \J<value>—Adjust Bits/s Rate Control Use this command to specify whether or not the negotiated connect speed of the modem forces the adjustment of the speed of the DTE to the modem’s speed.
  • Page 37 56K USB Modem User Guide In the third case, the modem receives a break from a remote modem during a connection. These commands are shown in Table 43. Table 43. \K<value> Commands When Break Is Received During Connection Command Function \K0, \K1 Clears data buffers and sends a break to the DTE.
  • Page 38 56K USB Modem User Guide \R<value>—Ring Indicator Signal Off After Answer This command is supported to ensure backward compatibility with communications software that issues the \R0 command. The \R1 version of this command is not supported. Result codes: • OK if <value> = 0.
  • Page 39 56K USB Modem User Guide \X<value>—XON/XOFF Pass Through Use this command to restrict the XON/XOFF flow control to the local DCE for processing or have the local DCE send the flow control characters to the remote DCE. Result codes: •...
  • Page 40 56K USB Modem User Guide Table 51. -V90=<value> Commands -V90=5 Selects 32000 bits/s. -V90=6 Selects 33333 bits/s. -V90=7 Selects 34666 bits/s. -V90=8 Selects 36000 bits/s. -V90=9 Selects 37333 bits/s. -V90=10 Selects 38666 bits/s. -V90=11 Selects 40000 bits/s. -V90=12 Selects 41333 bits/s.
  • Page 41 56K USB Modem User Guide Table 52. %C<value> Commands Command Function V.44/V.42bis/MNP 5 disabled. No data compression. V.44/V.42bis/MNP 5 enabled. Data compression enabled (default). %E<value>—Auto Fallback/Fallforward Control This command provides the option for the modem to automatically monitor line quality, to fall back when line quality is insufficient, and to fall forward when line quality is sufficient.
  • Page 42 56K USB Modem User Guide Table 56. Valid <v8cf> Values Value Meaning Enables DCE-controlled V.8 origination negotiation. Enables DCE-controlled V.8 origination negotiation, issues +A8x indications. Table 57. Valid <v8b> Values Value Meaning Disables V.8 negotiation. Enables DCE-controlled V8bis negotiation (default).
  • Page 43 56K USB Modem User Guide Table 60. Valid <sig_en> Values Value Meaning Enables detection of initiation signals (default). Enables detection or responding signals. Table 61. Valid <msg_en> Values Value Meaning Disables detection of messages (default). Enables detection of V.8bis messages.
  • Page 44 56K USB Modem User Guide Table 66. +DCS Extended Syntax Commands Command Description +DCS=<v42bis>,<v44> Configures compression algorithms. +DCS? Displays the current data compression configuration. +DCS=? Displays the valid +DCS parameter values. +DR<value>—Data Compression Reporting Use this command to enable or disable the compression report. If the compression report is enabled, the +DR:<type>...
  • Page 45 56K USB Modem User Guide Table 70. Valid <direction> Values Value* Meaning Does not negotiate V.42bis compression. Modem accepts V.42bis compression in both direction (default). * ITU-T Recommendation V.250 (05/99) standardized this command. The standard command includes two additional parameter val- ues (1 and 2), which are not supported by the controller-based AT command set.
  • Page 46 56K USB Modem User Guide Table 73. Valid <max_codewords_tx> and <max_codewords_rx> Values Value Meaning 1024 Default <max_codewords_tx> and <max_codewords_rx> value. 256—2048 Valid transmit and receive code word settings. The <max_string_tx> parameter specifies the maximum string length to negotiate in the transmit direction.
  • Page 47 56K USB Modem User Guide ERROR if <break_selection> ≠ 0—3 or <timed> ≠ 0 or <default_length> ≠ 10—90 in increments of 10. • Table 77. Valid break_selection Values Value Meaning Ignore break (default). Nonexpedited, nondestructive. Expedited, nondestructive. Expedited, destructive. Table 78. +EB Extended Syntax Commands...
  • Page 48 56K USB Modem User Guide Table 81. +ER Error Control Reporting Intermediate Result Codes Command Function +ER: NONE Data compression not in use. +ER: LAPM V.42 LAPM protocol is in use. +ER: ALT V.42 alternative protocol is in use. Table 82. +ER Extended Syntax Commands...
  • Page 49 56K USB Modem User Guide +ESA=<trans_idle>,<frame_idle>,<framed_un_ov>,<hd_auto>,<crc_type>,<nrz i_en>,<syn1>—Set Up Error Control Parameters Use this command to set the control parameters for the DCE in synchronous access mode (see page 11). USRobotics host-based modems do not use the <framed_un_ov>, <hd_auto>, and <syn1> parameters.
  • Page 50 56K USB Modem User Guide +ETBM=<pending_TD>,<pending_RD>,<timer>—Call Termination Buffer Manage- ment Use this command to set the behavior of the modem upon call termination. Only +ETBM=0,0,0 is a valid combination. This means that the modem discards all the buffered data when the call is terminated.
  • Page 51 56K USB Modem User Guide +GCAP—Request Complete Capabilities List Use this command to display the modems supported capabilities. The +GCAP command is an action command that always generates an OK result code and does not have extended syntax. The valid responses are shown in Table 91.
  • Page 52 56K USB Modem User Guide +GMM—Modem Identification Use this command to display the modem identity string and driver version number. The modem returns the same result codes as those generated by the I0 or I3 commands. Result codes: • OK for all extended syntax forms of this command.
  • Page 53 56K USB Modem User Guide Table 97. +IFC Extended Syntax Commands +IFC=? Displays the supported local flow control parameter settings. +ILRR=<value>—DTE-DCE Local Rate Reporting Use this command to display or hide the local rate report result code. If the rate report is enabled, the reported <rate>...
  • Page 54 56K USB Modem User Guide Table 100. +IPR Commands +IPR=115200 115200 bits/s. Table 101. +IPR Extended Syntax Commands Command Description +IPR=<DTE rate> Sets the DTE to DCE transmission rate. +IPR? Displays the current DTE to DCE transmission rate. +IPR=? Displays all supported transmission rates.
  • Page 55 56K USB Modem User Guide Table 104. +MR Extended Syntax Commands Command Description +MR=<value> Selects or deselects transmission of the modulation result codes. +MR? Displays the current status of the modulation report result code. +MR=? Displays the supported parameter values for modulation rate reporting.
  • Page 56 56K USB Modem User Guide The <max_rate> specifies the highest connections rate for the DCE. Table 107. Valid <max_rate> Range Value Meaning 31200 Determined by modulation selected in <carrier> (default). 300—56000 Value limited by modulation selected in <carrier>. Table 108. Valid <max_rate> for Each <carrier>...
  • Page 57 56K USB Modem User Guide +PCW=<call_waiting>—Call Waiting Enable Use this command to select how the modem responds to a call waiting signal. The controller-based response is also dependent on the current setting of the caller ID command, +VCID (+VCID=<pmode>— Caller-ID on page 77).
  • Page 58 56K USB Modem User Guide Result codes: • OK if <value> = 0, 1 ERROR if <value> ≠ 0, 1 • Table 116. Valid +PMH Parameter Values Value Meaning +PMH=0 Enables modem on hold. +PMH=1 Disables modem on hold (default).
  • Page 59 56K USB Modem User Guide during a modem on-hold procedure. In particular, bits 16—19 of the sequence define hold time. The +PMHR command does not have any extended syntax command forms. Result codes: • OK if the modem on-hold request is granted.
  • Page 60 56K USB Modem User Guide Table 119. Valid +PMHT Commands +PMHT=7 Grants modem on-hold request with a 3 min. time-out. +PMHT=8 Grants modem on-hold request with a 4 min. time-out. +PMHT=9 Grants modem on-hold request with a 6 min. time-out.

  • Page 61: Fax Commands

    56K USB Modem User Guide +PSS=<value>—Use Short Sequence Use this command to enable or disable the V.92 short training sequence. Result codes: • OK if <value> = 0. ERROR if <value> ≠ 0. • Table 123. Valid +PSS Commands Command...
  • Page 62 56K USB Modem User Guide Table 125. +FAA Commands +FAA=1 The DCE can answer and automatically determine whether to answer as a facsimile DCE or as a data modem. Table 126. +FAA Extended Syntax Commands Command Description +FAA=<value> Enables or disables adaptive answer.
  • Page 63 56K USB Modem User Guide +FBO=<value>—Phase C Data-Bit Order and Phases B and D Data-Bit Order This command is used to by DCE to offer service to convert Phase C and Phase B/D data bit order transparently to the DTE and remote facsimile. A direct mapping means the first bit transferred of each octet on the DTE-DCE link is the first bit transferred on the PSTN line.
  • Page 64 56K USB Modem User Guide (wd), page length (ln), data compression format (df), error correction (ec), file transfer mode (bf), scan time/ line (ST), and JPEG for color and black and white (jp). Result codes: • OK if <vr> = 000-0FF, <br> = 00-0D,<wd> = 00-02, <ln> = 00-02, <df> = 00-03, <ec> = 00-01, <bf> = 00, <st>...
  • Page 65 56K USB Modem User Guide Table 132. +FCC Valid Parameter Values(Continued) Label Values Description Label Values Description A4, 297 mm Disable JPEG coding B4, 364 mm Enable JPEG coding (Rec. T.81) Unlimited length (default) Full color mode Enable preferred Huffman tables...
  • Page 66 56K USB Modem User Guide Table 134. +FCLASS Extended Syntax Commands Command Description +FCLASS=<value> Selects the class or mode of the modem. +FCLASS? Displays the current class or mode. +FCLASS=? Displays the available parameter values for the +FCLASS command. +FCO—Facsimile Connection A +FCO response from DCE to DTE indicates a connection with a facsimile station.
  • Page 67 56K USB Modem User Guide Table 136. +FCR Extended Syntax Commands +FCR=<value> Controls capability to receive message data. +FCR? Displays the current receive message data capability. +FCR=? Displays all available parameter values. The DCE returns (00,01). +FCS—DCE Reports the DCS Frame Information A +FCS response from DCE to DTE reports the digital command signal (DCS) frame information.
  • Page 68 56K USB Modem User Guide +FDT—Data Transmission Request A +FDT command from DTE requests the DCE to transmit a Phase C page. This command is issued at the beginning of every page. If DCE receives command during Phase B, it proceeds with negotiation and releases the DCS message to the remote facsimile.
  • Page 69 56K USB Modem User Guide Table 139. HSC Codes(Continued) HSC Code Hangup Cause Description Unspecified transmit Phase B error Remote cannot receive or send COMREC error in transmit Phase B COMREC invalid command received RSPREC error DCS sent three times without response DIS/DTC received 3 times;...
  • Page 70 56K USB Modem User Guide +FHR—Report Received HDLC Frame +FHR:<received HDLC frame octets> reports the HDLC data that was sent by the DCE. Result codes: • +FHT—Report Transmitted HDLC frame +FHT:<transmitted HDLC frame octets> reports the HDLC data that was received by the DCE.
  • Page 71 56K USB Modem User Guide Table 140. +FLI Extended Syntax Commands Command Description +FLI=<local ID string> Local ID string. +FLI? Displays the range of character values supported. +FLI=? Displays the range of character values supported. +FLO=<value>—Flow Control Selection Use this command to set the type of flow control used to transmit data between the host and the modem.
  • Page 72 56K USB Modem User Guide +FMI?—Manufacturer Identification This command returns: • U.S. Robotics Result codes: • This command always yields an OK result code. Table 144. +FMI Extended Syntax Command Description +FMI, +FMI? Displays the modem manufacturer identification. +FMM—Product Identification This command returns the product identification, depending on the product.
  • Page 73 56K USB Modem User Guide +FMS=<value>—Minimum Phase C Speed Control Use this command to limit the lowest negotiable speed for a session. The value is the same as the BR parameter in the +FCC valid parameter table. Result codes: •...
  • Page 74 56K USB Modem User Guide +FNR—Negotiation Message Reporting Control Parameter +FNR=<rpr>,<tpr>,<idr>,<nsr> is used to control the reporting of messages generated during Phase B negotiations. Description of controls is shown in table below. Result codes: • OK if <rpr> = 0-1, <tpr> = 0-1,<idr> = 0-1, <nsr> = 0-1.
  • Page 75 56K USB Modem User Guide +FPA—Selective Polling Address The +FPA:<selective polling address string> is a 20-digit ASCII string in the range from 0x20—0x7E. This string is sent by the DCE at the time specified by the T.30 recommendation, as long as parameter is not null.
  • Page 76 56K USB Modem User Guide Table 153. +FPP Extended Syntax Commands Command Description +FPP=<value> DCE to DTE packet protocol setting. Disabled only setting supported. +FPP? Displays the current setting for packet protocol. +FPP=? Displays the available parameter values for the +FPP command.
  • Page 77 56K USB Modem User Guide +FPW—Sending or Polling Password The +FPW:<PassWord string> is a 20-digit ASCII string in the range from 0x20—0x7E. This string is sent by the DCE at the time specified by the T.30 Recommendation, as long as parameter is not null.
  • Page 78 56K USB Modem User Guide +FRM=<mod>—Receive Data Use the +FRM command to instruct the modem to received data using the modulation defined by Table 160. Result codes: • CONNECT if <mod> = 3, 24, 48, 72—74, 96—98, 121, 122, 145, 146, and the connection is estab- lished.
  • Page 79 56K USB Modem User Guide +FRQ—Receive Quality Threshold This +FRQ=<pgl>,<cbl> command is used to decide if copy quality is OK. This decision is made based on the percentage of good lines (pgl) and the consecutive bad line count (cbl). The USRobotics FAX modem supports this command only for MH encoding.
  • Page 80 56K USB Modem User Guide +FSA—Destination Subaddress The +FSA:<destination subaddress string> is a 20-digit ASCII string in the range from 0x20—0x7E. This string is sent by the DCE at the time specified by the T.30 Recommendation, as long as parameter is not null.
  • Page 81 56K USB Modem User Guide +FTI—DCE Reports Received Transmit Station ID (TSI) A +FTI response from DCE to DTE reports the identification of the transmitting facsimile. The syntax of the response is as follows: +FTI: <TSI ID string>, where TSI ID string is the remote facsimile’s identification. The string is limited to 20 characters in range from 0x20—0x7E.
  • Page 82 56K USB Modem User Guide +FTM=<mod>—Transmit FAX Data with <mod> Carrier +FTM=<mod> command causes the modem to transmit data using the modulation defined by Table 169. Result codes: • CONNECT if <mod> = 3, 24, 48, 72—74, 96—98, 121, 122, 145, 146, and the connection is estab- lished.

  • Page 83: Voice Commands

    56K USB Modem User Guide Voice Commands The AT voice command set follows ITU-T Recommendation V.253. The commands are sent through the com port, but the data path is sent either through the com port or through a DMA channel using the wave driver.
  • Page 84 56K USB Modem User Guide +VDR=<enable>,<report>—Distinctive Ringing and Cadence Report Use this command to enable or disable the distinctive ringing feature. Distinctive ringing features are identified by the DROF=<length of ring in 0.1 s increments> and DRON=<length of silence in 0.1 s increments>...
  • Page 85 56K USB Modem User Guide Table 176. +VGM Extended Syntax Commands Command Function +VGM=<gain> Sets the microphone gain level. +VGM? Displays the current gain level. +VGM=? Displays the supported speaker gain levels for the product. +VGR=<gain>—Receive Gain Selection Use this command to set the receive microphone gain control. The receive gain has a range of 0—255.
  • Page 86 56K USB Modem User Guide Table 179. +VGS Command <gain> Values Command Function <gain> = 128 Nominal level for speaker gain (default). <gain> = a value greater than 128 Increases gain above nominal level. <gain> = a value less than 128 Decreases gain below nominal level.

  • Page 87: Voice Commands: Speakerphone Operation

    56K USB Modem User Guide Table 183. +VIT Extended Syntax Commands Command Function +VIT=<timer> Sets the DTE/DCE inactivity timer. +VIT? Displays the current value of the timer. +VIT=? Displays the range of supported delay times in seconds. +VNH=<Hook>—Automatic Hang-Up Control Use this command to enable or disable automatic DCE hang-ups in the data and facsimile modes.

  • Page 88: Voice Commands: Telephone Answering Device (Tad)

    56K USB Modem User Guide Table 187. +VLS Extended Syntax Commands Command Function +VLS=<value> Attaches or detaches an analog source or destination to the system in voice mode. +VLS? Reports the current analog source/destination configuration, along with a listing of all event codes reported from the modem to the DTE under that configuration.
  • Page 89 56K USB Modem User Guide Events Reported to the DTE The modem returns OK when going off-hook in voice mode (+FCLASS=8). After answering in voice mode, the modem may send any of the following <DLE> shielded event codes to the DTE, as appropriate.
  • Page 90 56K USB Modem User Guide +VRA=<interval>—Ringing Tone Goes Away Timer Use this command to set the ringing tone goes away timer before originating a call. The ringing tone goes away timer defines the amount of time the modem waits between ringing tones before assuming that the remote station has gone off-hook.
  • Page 91 56K USB Modem User Guide +VSD=<sds>,<sdi>—Silence Detection (QUIET and SILENCE) Use this command to set the silence detection sensitivity (<sds>) and silence detection interval (<sdi>). The <sds> parameter defines the line noise sensitivity level in decibels. The <sdi> parameter specifies the amount of time the modem waits before reporting silence to the DTE. It is used for determining the presumed hang-up (SILENCE), after which the modem sends <DLE>-s to the...
  • Page 92 56K USB Modem User Guide Table 196. +VSM Extended Syntax Commands +VSM? Returns the numeric and string labels of the compression method currently in use, and the sampling rate currently in use. AT+VSM=? Reports the voice compression methods supported by the DCE and the voice sampling rates at which they are supported.
  • Page 93 56K USB Modem User Guide +VTR—Start Voice Transmission and Reception Process Use this command to initiate full-duplex voice mode* in the DCE. In this mode, the DTE selects the analog source and sink through the +VLS command; the selections can be microphone and speaker or GSTN.

  • Page 94: Fast Connect And V23 Reverse Channel Commands

    56K USB Modem User Guide +VTX—Enter Voice Transmit Data State Use this command to initiate the voice transmission process with the voice stream sent through the comm port. Applications using the wave interface do not use the +VTX command. There are two ways for the DCE to leave the voice transmit state: •...
  • Page 95 56K USB Modem User Guide Table 203. Register S109 Description S109[1:0] = 00 S109[1:0] = 01, 10, 11 S109[2] = 1 Fast connect Phase 1 enable S109[3] = 1 PCM upstream enable S109[4] = 1 V.92 enable S109[5] = 1...
  • Page 96 56K USB Modem User Guide Table 204. #UD Last Call Status Report Format Note: Refer to Table 1 in the Microsoft specification. Value(s) Required Definition Implemented 2 digits Diagnostic command specification revision number, digit.digit. 0—A Call setup result code. Table 205 on page 92.
  • Page 97 56K USB Modem User Guide Table 204. #UD Last Call Status Report Format(Continued) Note: Refer to Table 1 in the Microsoft specification. Value(s) Required Definition Implemented 4 digits 0—FA00 Final transmit carrier rate. 4 digits 0—FA00 Final receive carrier rate.
  • Page 98 56K USB Modem User Guide Table 204. #UD Last Call Status Report Format(Continued) Note: Refer to Table 1 in the Microsoft specification. Value(s) Required Definition Implemented 2 digits 0—FF Call waiting event count. 62— — — Reserved for future versions of the specification.
  • Page 99 56K USB Modem User Guide Table 206. gstnModulationSchemeActive from 3.7.2/V.58 Note: Refer to Table 6 in the Microsoft specification. V.pcm (symmetric). — E—7F Reserved (V.58). — — K56flex. V.FC. — V.32terbo. — 80-FF Reserved for mfgs. — Table 207. errorControl Active from 3.5.2/V.58 Note: Refer to Table 7 in the Microsoft specification.
  • Page 100 56K USB Modem User Guide Table 210. callCleared Codes from 3.6.4/V.58-1994 Note: callCleared indicates that the DCE has gone on-hook and that the previously existing network con- nection has been cleared. These values are hexadecimal, converted from decimal in V.58. Refer to Table 10 in the Microsoft specification.

  • Page 101: S-Registers

    56K USB Modem User Guide Table 210. callCleared Codes from 3.6.4/V.58-1994(Continued) Note: callCleared indicates that the DCE has gone on-hook and that the previously existing network con- nection has been cleared. These values are hexadecimal, converted from decimal in V.58. Refer to Table 10 in the Microsoft specification.

  • Page 102: S-Register Definitions

    56K USB Modem User Guide Table 212. S-Register Summary(Continued) Register Description Range Unit Default Results bit-mapped options status. — — V.34 modulation enable/disable. 0—1 — V17 disable. 0—1 On/Off Inactivity timer. 0—255 Minutes Synthetic ring volume. 0—255 Synthetic ring frequency.

  • Page 103: S1 Ring Counter

    56K USB Modem User Guide S1—Ring Counter The modem increments the S1 register each time it detects a ring signal on the telephone line. The modem clears S1 if no rings occur over a six second interval. This register is read-only.

  • Page 104: S5 Command-Line Editing Character

    56K USB Modem User Guide S5—Command Line Editing Character (User Defined) S5 sets the character recognized as a backspace (pertains to asynchronous operation only). The modem does 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.

  • Page 105: S10 Automatic Disconnect Delay

    56K USB Modem User Guide S9—DTMF Tone Off Duration This register determines the number of ms that the DTMF tone is off. Refer to the USRobotics Controller- Based Homologation Manual for specific country defaults. Note: This register default is set to the same as S11 register upon reset.

  • Page 106: S18 Dial-Pulse Interdigit Period

    56K USB Modem User Guide Table 213. Register S14 Bits Description Value Result codes (V <value>). 0 = Numeric (V0). 1 = Verbose (V1) (default). Pulse dial pulses/s selection (&Pn). 0 = 10 pulses/s (&P0 and &P1) (default). 1 = 20 pulses/s (&P2).
  • Page 107 56K USB Modem User Guide S28—V.34 Modulation Enable/Disable This register enables/disables V.34 modulation. Range: 0—1. • Default: 1. Table 216. S28 Values Value Function Disables V.34 modulation. Enables V.34 modulation. S30—Inactivity Timer This register specifies the length of time in minutes that the modem must wait before disconnecting when no data is sent or received.
  • Page 108 56K USB Modem User Guide S35—Data Calling Tone Data calling tone is a tone of a certain frequency and cadence as specified in V.25, which allows remote data/FAX/voice discrimination. The frequency is 1300 Hz with a cadence of 0.5 s on and 2.0 s off. The setting of the homologation parameter 1f, calling tone flag, determines if S35 (same as -C command) is enabled.
  • Page 109 56K USB Modem User Guide S38—56K Downstream Rate Once a connection type* (V.90) is determined, use register S38 to force a particular downstream rate. A value of zero disables both connection types and allows a more reliable V.34 connection. The default value of one allows the modem to select the downstream rate automatically.
  • Page 110 56K USB Modem User Guide (48 kbits/s – 4 kbits/s). The exception to this is for 32 kbits/s and 34 kbits/s rates, which are the true rates regardless of the number of RBS frames detected. S42—Auto Rate This command is used for testing and debugging only.
  • Page 111 56K USB Modem User Guide Table 224. Register S36 and S48 Configuration Settings S36 = 0, 2 LAPM or hang-up. Do not use. S36 = 1, 3 LAPM or asynchronous. Asynchronous. S36 = 4, 6 LAPM, MNP, or hang-up. MNP or hang-up.
  • Page 112 56K USB Modem User Guide Range: 6—25 (corresponding to –6 dBm to –25 dBm transmit level) • Default: 10 (–10 dBm transmit level) • Units: –dBm S127—Caller ID Impedance Activation Register S127 invokes the Caller ID impedance specifications for a particular country.

  • Page 113: Result Codes

    56K USB Modem User Guide Result Codes The modem’s AT command handler responds to commands from the caller and to activity on the line via result codes. Table 225 presents a summary of these result codes. Two forms of each result code are available. The long-form, or verbose, response is given when V1 is selected, and the short-form, data-like numeric response is given when V0 is selected.
  • Page 114 56K USB Modem User Guide Table 225. Result Code Summary (continued) Numeric Result Code Description Code DELAYED Delay is in effect for the dialed number. BLACKLISTED Dialed number is blacklisted. BLACKLIST FULL Blacklist is full. CONNECT 32000 EC* Connection at 32000 bits/s.

  • Page 115: Voice Modem Command Examples

    56K USB Modem User Guide Voice Modem Command Examples The application issues AT commands to request actions by the modem, and the modem responds with standard TIA-602 result codes to tell the application that the requested action has been completed.

  • Page 116: Example #1: Initiating A Speakerphone Call (With Phone Muting During Conversation)

    56K USB Modem User Guide Example #1: Initiating a Speakerphone Call (with Phone Muting Dur- ing Conversation) The speakerphone application is loaded. The modem is initially idle in data mode. The user then decides to pick up the phone to place a speakerphone call. Picking up the phone should initiate the following chain of events.

  • Page 117: Example #2: Initiating A Stored Number Speakerphone Call

    56K USB Modem User Guide Example #2: Initiating a Stored Number Speakerphone Call The speakerphone application is loaded. The modem is initially idle in data mode. The user then decides to place a speakerphone call either by entering the number without first going off-hook or by selecting a number previously stored in the application.

  • Page 118: Example #4: Receiving An Incoming Fax Call In Speakerphone Or Tad Mode And Switching To Fax Mode

    56K USB Modem User Guide Command/Response Description AT+VLS=7 Call is answered. Attach internal speaker and microphone to the line, DCE off-hook. DCE responds. Now in speakerphone mode, connected to the line (call is answered). The speakerphone user picks up the phone and hears the caller from the other end. Conversation continues for awhile.

  • Page 119: Example #5: Receiving An Incoming Data Call In Speakerphone Or Tad Mode And Switching To Data Mode

    56K USB Modem User Guide Example #5: Receiving an Incoming Data Call in Speakerphone or TAD Mode and Switching to Data Mode In this example, the sequence begins at the point of the user or telephone answering device (TAD) taking the speakerphone off-hook and detecting a data calling tone from the other end.
  • Page 120 56K USB Modem User Guide AT+VSD=128,0 DTE selects normal silence detection sensitivity, and a silence detec- tion interval of 0 seconds. Disables silence detection. DCE responds. <DLE>-R DCE detects another ring and notifies DTE. AT+VLS=1 The modem answers the call.

  • Page 121: Example #8: Call Screening And Recording A Message With Tad Using The Wave Driver To Transmit And Receive Voice Samples

    56K USB Modem User Guide Example #8: Call Screening and Recording a Message with TAD Using the Wave Driver to Transmit and Receive Voice Samples In this example, the TAD application is loaded. The modem is in data mode (+FCLASS=0), idle state.

  • Page 122: V.22 Fast Connect Command Example

    56K USB Modem User Guide At the end of the message, the application may issue the WAVE_IN_STOP message to the wave driver. Command/Response Description DTE issues standard command to terminate call. DCE goes on-hook, speaker and microphone are detached from system, and modem returns to data mode (+FCLASS=0).

  • Page 123: At Command Cross-Reference Tables

    56K USB Modem User Guide AT Command Cross-Reference Tables Table 227. Data and General Commands Command Description Reference* Repeat last command. — Answer. V.250 (05/99) Communication standard setting. — Carrier control. — Dial. V.250 (05/99) Echo command. V.250 (05/99) Online data character echo command.
  • Page 124 56K USB Modem User Guide Table 227. Data and General Commands Modem port flow control. — Adjust bits/s rate control. — * All references are ITU-T recommendations unless otherwise noted. Table 227. Command Description Reference* Adjust bits/s rate control. —...
  • Page 125 56K USB Modem User Guide Table 228. V.92 and V.44 Commands Reference* Command Function +DCS Select data compression algorithm V.250 +DS44 V.44 data compression V.250 +PCW Call waiting enable V.250 +PIG PCM upstream ignore V.250 +PMH Modem on-hold enable V.250...
  • Page 126 56K USB Modem User Guide Table 229. FAX Class 1/Class 1.0/Class 2/Class 2.0/2.1 Commands Summary(Continued) Reference Command Function +FIT DTE inactivity timer (not supported T.32 (08/95) +FKS Session termination command T.32 (08/95) +FLI DCE transmits local ID string, TSI or CSI —...
  • Page 127 56K USB Modem User Guide Table 230. AT Voice Commands Summary Command Description Reference* +FCLASS=8 Enter voice mode. V.253 (02/98) +VCID Caller-ID. V.253 (02/98) +VDR Distinctive ring. V.253 (02/98) +VEM Event reporting and masking. IS-101 +VGM Microphone gain. — +VGR Receive gain selection.
  • Page 128 56K USB Modem User Guide Table 231. T.35 Country Code Table(Continued) TAPI Code T.35 Code Used in +GCI Modem Internal CountryID Country (decimal) (hex) (hex) Belgium Bolivia Bosnia — Brunei — Bulgaria Cabo Verde (Cape Verde) — Cambodia — Canada —...
  • Page 129 56K USB Modem User Guide Table 231. T.35 Country Code Table(Continued) TAPI Code T.35 Code Used in +GCI Modem Internal CountryID Country (decimal) (hex) (hex) India Indonesia Iran — Ireland Israel Italy Japan Jordan — Kenya — Kuwait Latvia Lebanon...
  • Page 130 56K USB Modem User Guide Table 231. T.35 Country Code Table(Continued) TAPI Code T.35 Code Used in +GCI Modem Internal CountryID Country (decimal) (hex) (hex) Saudi Arabia — Serbia — Seychelles — Singapore Slovakia Slovenia South Africa South Korea Spain...

  • Page 131: Uninstallation

    56K USB Modem User Guide Uninstallation Note:These instructions only apply to this USRobotics modem. If the modem you'll be uninstalling was made by another manufacturer or is an another USRobotics modem, refer to that modem's docu- mentation for instructions. Windows Vista 1.
  • Page 132 56K USB Modem User Guide Windows 2000 1. Click Windows Start > Settings > Control Panel and double-click System. 2. Click the Hardware tab and click the Device Manager button. 3. Double-click to expand Modems. 4. Right-click U.S. Robotics V.92 USB Modem and select Uninstall. To confirm the removal of the device from your system, click OK.

  • Page 133: Troubleshooting

    56K USB Modem User Guide Troubleshooting General This procedure addresses a number of symptoms that you might experience with your modem. 1. Verify that the cables are connected correctly. This includes all cables connecting the telephone line, the modem, and your computer.

  • Page 134: My Pwr Led Is Not Lit

    C. Select the Modem tab. D. Verify that USRobotics 56K USB Modem is shown as your current modem. If the modem is not selected; scroll through the Modem list, select USRobotics 56K USB Modem and click Apply Now. If the installation was still not successful; repeat the installation procedure making sure you plug the modem directly in to a USB port on your computer.
  • Page 135 56K USB Modem User Guide Solution 2: When you insert or remove a USB cable from your computer, the computer should indicate activity such as hard disk activity or an hourglass cursor. If the computer does not show any sign of activity, your system may not be properly communicating with the USB ports.

  • Page 136: My Communication Software Does Not Recognize The Modem

    56K USB Modem User Guide My communication software does not recognize the modem. Solution 1: Your communication software may not function properly if any of the following are true: • More than one version of the software is installed on your computer.

  • Page 137: My Modem Doesn't Dial Out Or Doesn't Answer Incoming Calls

    56K USB Modem User Guide My modem doesn’t dial out or doesn’t answer incoming calls. Solution 1: You may have a bad telephone cord. Try another telephone cord. Solution 2: You may have plugged the modem's phone cord into a digital line. Contact the department responsible for your phone system if you are unsure whether your phone line is analogue or digital.

  • Page 138: My Modem Is Not Achieving A 56K Internet Connection

    56K USB Modem User Guide My modem is not achieving a 56K Internet connection. Solution 1: Contact your ISP to verify that the number you are dialling supports V.90/V.92 speeds. Solution 2: Contact your telephone company to verify that the telephone line for your modem supports V.90/V.92 speeds.

  • Page 139: Additional Information

    3. Many of the most common difficulties that users experience have been addressed in the FAQ and Troubleshooting Web pages for your 56K USB Modem. The Support pages also contain current sup- port contact information and documentation. 4. The support contact information on the last page of this guide.

  • Page 140: Radio And Television Interference

    56K USB Modem User Guide Radio and Television Interference: 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.

  • Page 141: Ul Listing/Cul Listing

    56K USB Modem User Guide disconnect the equipment until the problem is resolved. There are no serviceable parts in this equipment. If your home has specially wired alarm equipment connected to the telephone line, ensure the installation of this equipment does not disable your alarm equipment. If you have questions about what will disable alarm equipment, consult your telephone company or a qualified installer.

  • Page 142: Ce Compliance

    We, U.S. Robotics Corporation of 935 National Parkway, Schaumburg, Illinois, 60173-5157 USA, declare under our sole responsibility that the product, USRobotics 56K USB Modem, Model 5637, to which this declaration relates, is in conformity with the following standards and/or other normative documents.

  • Page 143: Support

    56K USB Modem User Guide Support Support / Assistance / Servizio assistenza / Asistencia técnica / Destek / Υποστήριξη 1. USRobotics: www.usr.com/support/ Model Number Serial Number 5637-OEM United States www.usr.com/emailsupport (888) 428-9450 Canada www.usr.com/emailsupport (888) 428-9450 Austria / Österreich / Ausztria www.usr.com/emailsupport/de 07110 900 116...
  • Page 144 56K USB Modem User Guide...

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