User guide

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Chapter 5 - AT Commands
port while calls are being held off will not be rejected nor will RING messages be given.
Rather the digital call will be held in an alerting state until !Hn times out at which point the
call will begin the normal ringing process. Digital calls originated from that port while the !Hn
timer is running will abort the timer and the call will go out immediately. This command can
be very useful for certain RAS environments that require at least 1 second to initialize a port
after a call has disconnected (such as Citrix and Novell).
O Return Online
Values: none
Default: none
Returns TA to online mode from the online command mode. When TA makes a data
connection, it enters online data mode. The TA typically remains in this mode until it receives
an escape sequence or until the call ends. When it detects an escape sequence, the TA enters
online command mode, where it can accept AT commands while retaining the online
connection. To return the TA to online mode from the online command mode, enter the
command ATO and press ENTER.
Analog (Modem) Call Commands
*AnAnswer Analog Call
Unit: Decimal ASCII code
Values: n=0 (Analog Port 0),
n=1 (Analog Port 1)
Default: *An (n=TA port number which command is
given)
The *An command forces the TA to answer an incoming analog call on analog port n. If n is
not specified, then n is assumed to be 0.
*BnSend Analog Call Digit
Unit: ASCII
Values: n=0-9,A,B,C,D,*,#
Default: n/a
The *Bn command forces the TA to send a dial digit to the analog port associated with the
command port this command is given (Analog Port 0).
*Dn Dial Analog Number
Unit: ASCII
Values: n=dial string composed of 0-9,A,B,C,D,*,#
Default: No dial string
The *Dn command causes the TA to dial an analog telephone number (e.g., AT*D785-
3500<CR>). The dial string can contain up to 80 characters.
*Hn Hang Up Analog Call
Unit: Decimal ASCII code
Values: n=0 (Analog Port 0),
n=1 (Analog Port 1)
Default: *Hn (n=TA port number which command is given)
The *Hn command spoofs the TA into believing the analog port went on-hook (hung up).