ZyXEL Communications Omni TA128 - Manual (Page 33)

21
AT Command Dial string it will map to
AT&O0 ATD, ATDT and ATDP are the same as ATDB.
AT&O2 ATD, ATDT and ATDP are the same as ATDI.
AT&O3 ATD, ATDT and ATDP are the same as ATDA.
The factory default is AT&O2. This means the TA will select ISDN
data mode when you do not specify which communication mode
to use (i.e. ATD or ATDT).
Placing the Call
To initiate a call, choose the proper communication mode and
configure the mode according to the bearer service (or protocol)
you want to use. Here are some simple commands that will be
useful when placing a call:
Command Description
ATBnn Changes ISDN B channel protocol setting.
ATDL Re-dials the last dialed telephone number.
Incoming Calls
When a call comes in, it will be carried by one of the following
protocols:
•
V.120
•
HDLC PPP, MPPP or SLIP
•
V.110
•
X.75
or the call may be initiated by an analog device.
This section will provide some general guidelines for setting up the
device for call answer handling. Be aware that the TA128 will not
automatically answer a call unless S-register S0 is set to a value
greater than 0 (zero). If S-register S0=0, the TA128 will only report