ZyXEL Omni TA 128 User Guide - Page 33

Incoming Calls

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AT Command AT&O0 AT&O2 AT&O3 Dial string it will map to ATD, ATDT and ATDP are the same as ATDB. ATD, ATDT and ATDP are the same as ATDI. 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 ATBnn ATDL Description Changes ISDN B channel protocol setting. 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 21

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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
ATB
nn
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