Nortel Networks 553-3001-211 manual AT dialing commands Part 1 Command Description

NT7D16 Data Access card Page 477 of 894

Note: The parity determined here overrides the parity downloaded from the system. Also, the T (t) must be entered in the same case as the A (a). If you entered uppercase A for the Baud Rate, you must enter upper case T for the parity.

Dialing operation

Like keyboard dialing, the Hayes dialing commands allow the user to initiate a data call, as well as change certain dialing parameters. The commands may be entered in either upper or lower case, but must be the same case throughout the command line. Also the case must match the autobaud case.

Note: Hayes dialing does not allow for the Ring Again feature. If a call is made to a busy number, that call is abandoned.

Table 155 provides a list of the AT dialing commands.

Table 155

AT dialing commands (Part 1 of 2)

Command	Description
ATA	Answer (answer incoming data call)
ATDnnnn	Dial (n = 0-9, numbers to be dialed)
ATDTnnnn
A/	Repeat last command (no <CR> needed)
ATO	On-line (enter three Escape characters rapidly to go off-line)
ATDPnnnn	Voice call (n = 0-9, numbers to be dialed)
ATF0	Handsfree/mute (toggle Handsfree between mute and normal)
ATF1	Hold (put voice call on hold)
ATF2	Select (take voice call off hold)
ATH0	Hang up data call

Note 1: To use AT dialing, enter CTRL-z at carriage return (<CR>) when the port is idle.

Note 2: Follow each command (except A/) by a carriage return (<CR>) to execute it.

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