V.25Ter At Command Set; V.25Ter At Commands - Compaq 244100-005 - Deskpro 2000 - 16 MB RAM White Paper

Compaq V.90 Integrated Modem Commands

V.25ter AT Command Set

These +GMx commands are required by Microsoft PC98 specifications:
Manufacturer Identification (+GMI?)
Version/Revision Information (+GMR?)
Modem Identification (+GMM?)
The chip set supports the following functionalities of the V.25ter for a H.324 call:
The modified function of the ATD command when issued while the analog voice connection
is established. This command will not cause the DTMF dialing and tone detection associated
with the usual ATD # command.
The AT commands, sub-parameters, and values listed in the following chart.

V.25ter AT Commands

Command
AT+A8E=<v8o>,
<v8a>,<v8cf>
AT+A8E?
AT+A8E=?
+A8I:<v8cf><CR>
+A8M=<hexadeci-
mal coded CM or
JM octet string>
+A8A:<type><CR>
ECG021/1298
Sub- Values
parameter
v8o <1> (default) Disables the CI option
while in V.8 origination.
However, the modem detects ANSam
and is capable of starting in V.34
mode when initiating the call as a
data call.
<6> Enables DCE control of V.8 and
CI option.
v8a
<1> (default) Disables the CI option
while in V.8 negotiation.
However, the modem sends the
ANSam and is capable of starting in
V.34 mode when answering a call
<5> Enables DCE control of V.8 and
CI option.
v8cf <21h> Call function for H.324 calls
<c1h> Call function for DSVD calls
Coded CM Refer to V.8 document for coding.
or JM octet
<type> <1> Indicates V.8 ANSam signal
flags
<0> Indicates no ANSam signal
detected
Description
Defined for two conditions: as a parameter to
configure V.8 originating and answering operation
while the DCE is on-hook, and to initiate an action
if the DCE is off-hook.
V.8 negotiation does not preclude simultaneous
implementation of other negotiation means such
as V.8bis, V.18, or V.32bis.
Reports current values of sub-parameters
Reports supported ranges of values <v8o>,
<v8a>, and <v8cf>
Used by an answering DCE if +A8E,<v8a> !=0, to
indicate detection of a V.8 CI signal and to report
the recovered Call Function octet(s). Value <v8cf>
is a hexadecimal code octet that can take values
as shown above in +A8E command.
Directs the DCE to send a V.8 CM or JM signal
using the specified hexadecimal coded string.
Used by a calling DCE if +A8E <v8o> #0 to
indicate detection of an answering signal.
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