Voice Command

region contain Reference October 2, 1997 part Command typeset Technical Reference 3Com U. S. Robotics 1 articulate Command Reference October 2, 1997 V 1. 0 V 2. 0 Revision information Initial plough for Sportster Vi modem Amended and updated version. Vi, Voice, Flash and MessagePlus Now covers side limit Sportsters 3Com U. S. Robotics 2 Voice Command Reference October 2, 1997 1. Global Commands The AT reign overs in the following sections ar global, meaning that they can be issued in any admit mode (i. e. , any CLS setting). For consistency, the operate set is divided into action affirmations and parameters (non-action commands).Those commands, which are action commands (i. e. , those that cause approximately alternate in the current operating(a) behavior of the modem) are identified as much(prenominal), and the remaining commands are parameters. 1. 1 ATA Answering in Voice The answer action command whole works analogously to the way it works in data and autotyp e tempers ask out for the following 1. When configured for Voice mood (CLS=8), the modem forecasts Online Voice Command dash immediately after going off-hook. When theCLS=8 command is issued, the modem can be programmed to look for 1100 and 1300 Hz calling tones (see VTD), thus eliminating the need to do so as part of A command processing.After the VCON subject is issued, the modem re-enters Online Voice Command humor while sending any incoming DTMF or Calling Tone indications to the DTE. After answering in Voice Mode (CLS=8), the DTE, as part of its call discrimination processing, can decide to compound the CLS setting to attempt receiving a fax in Class 1, or to make a data connection. In such a case, the DTE commands the modem to decease with the data or fax handshake via the A command up to now though the modem is already off-hook. 1. 1. 1 Parameters said(prenominal) as Data and Fax modes. . 1. 2 Result Codes VCON Issued in Voice Mode (CLS=8) immediately after going o ff-hook. 1. 2 ATD Dial Command in Voice The telephone dial action command works analogously to the way it works in Data or Fax modes. When in Voice Mode (CLS=8) The modem attempts to line up when the remote has picked up the telephone line and once this determination has been made, the VCON message is direct to the DTE. This determination is initially made based upon ringback detection and disappearance. (See VRA and VRN commands. ). at a time connected in Voice Mode, the modem immediately enters the command state and switches to Online Voice Command Mode that enables unsolicited reporting of DTMF and answer tones to the DTE. 1. 2. 1 Parameters equal as Data and Fax modes. 1. 2. 2 Result Codes VCON Issued in Voice Mode (CLS=8) when the modem determines that the remote modem or handset has gone off-hook, or when reversive to the Online Voice Command Mode. (See VRA and VRN. ) 3Com U. S. Robotics 3 Voice Command Reference October 2, 1997 NO ANSWER Issued in Voice Mode (CLS=8) whe n the modem determines that the remote has not picked up the line before the S7 timer expires. . 3 ATH Hang Up in Voice This command works the same as in Data and Fax modes by hanging up (disconnecting) the telephone line. There are, however, some specialized considerations when in Voice Mode 1. The H command forces CLS=0, save does not destroy any of the sound parameter settings such as VBS, VSP, etc. Therefore, if the DTE wishes to issue an H command and then pursue another(prenominal) voice call, it must issue a subsequent CLS=8 command, still it neednt reestablish the voice parameter settings again unless a change in the settings is desired. 2. The BDR setting is forced back to 0, re-enabling autobaud. . If the VLS setting is set to assume a device which is not, or does not include the telephone line (such as a local handset or microphone), the H command deselects this device and reselects the normal default setting (VLS =0). Normally, the DTE should not issue the H comma nd while connected to a local device such as a handset, because merely selecting this device results in VCON. The normal epoch of terminating a session with such a device is to use the VLS command to select the telephone line, which by definition makes sure it is on-hook. . 3. 1 Parameters Same as Data and Fax modes. 1. 3. 2 Result Codes Same as Data and Fax modes. 1. 4 ATZ Reset from Voice Mode This command works the same as in Data and Fax modes. In addition, the Z command resets all voice related parameters to default states, forces the BDR=0 condition (autobaud enabled), and forces the telephone line to be selected with the handset on-hook. No voice parameters are stored in NVRAM so the profile loaded does not displace the voice aspects of this command. 1. 4. 1 Parameters Same as Data and Fax modes. 1. 4. 2Result Codes Same as Data and Fax modes. 1. 5 BDR opt Baud Rate (Turn off Autobaud) This command forces the modem to select a specific DTE/modem baud rate without further speed sensing on the interface. When a valid BDR=n command is entered, the OK result code is sent at the current assumed speed. After the OK has been sent, the modem switches to the speed indicated by the BDR=n command it has just received. When in Online Voice Command Mode and the BDR setting is nonzero (no autobaud selected), the modem supports a full duplex DTE interface.This means that the DTE can enter commands at any time, even if the modem is in the process of sending a shielded code indicating DTMF detection to the DTE. When in Online Voice Command Mode and the BDR setting is zero (autobaud selected), shielded code reporting to the DTE is disabled. Note that when BDR has been set nonzero, the modem employs the S30 Deadman Timer, and this timer starts at the point where BDR is set nonzero. If this period 3Com U. S. Robotics 4 Voice Command Reference October 2, 1997 xpires (nominally 60 seconds) with no activity on the DTE interface, the modem reverts to BDR=0 and CLS=0. 1. 5. 1 Parameters n = 0 48 (New baud rate is n*2400 bps) indifference 0 1. 5. 2 Result Codes OK ERROR 1. 5. 3 If n = 0 48. Otherwise. Command options BDR? Returns the current setting of the BDR command as an ASCII ten-fold value in result code format. BDR=? Returns a message indicating the speeds that are supported. BDR=0 Enables autobaud detection on the DTE interface. BDR=n Where 1