ATD - Dial Command in Voice

The dial action command works analogously to the way it works in Data or Fax modes. When in Voice Mode:

1. The modem attempts to determine when the remote has picked up the telephone line and once this determination has been made, the VCON message is sent to the DTE. This determination is initially made based upon ringback detection and disappearance.

2. Once connected in Voice Mode, the modem immediately enters the command state and switches to Online Voice Command Mode which enables unsolicited reporting of DTMF and answer tones to the DTE.

Parameters:
Same as Data and FAX modes.

Result Codes:
VCON - Issued in Voice Mode when the modem determines that the remote modem or handset has gone off-hook, or when returning to the Online Voice Command Mode.

NO ANSWER - Issued in Voice Mode when the modem determines that the remote has not picked up the line before the S7 timer expires.

Click here to return to the Contents page.