Comtrol AT Commands - Manual (Page 60)

AT Commands for CX81801/CX06833/CX81300/CX06827 Modems Reference Manual
Conexant 102184B
3-34
+IBC – In Band Commands
This command provides a mechanism by which an in-band secondary channel may be
implemented. This in-band secondary channel can be utilized to transparently exchange
commands and responses to/from the modem during a data connection. This is an
alternative approach to using the +++ escape sequence. The +IBC command also
provides a mechanism to exchange V.24 signaling via the secondary channel. The
primary reason the In Band Channel is implemented is to retrieve Caller ID type II
information.
The supported In Band Channel command is compatible with the ITU-T V.80 standard
but is not a full V.80 implementation. TheV.80 protocol supported is described below.
Portions of the V.80 protocol not described are not supported. Please refer Section 7 of
the ITU-T V.80 standard for more details.
Syntax
+IBC=<IB>,<105>,<106>,<107>,<108>,<109>,<110>,<125>,<132>,<133>,<135>,
<142>,<hook>
Defined Values
<IB> Enables or disables in-band control sequence.
0 Disable in-band control sequences.
1 Enable 7-bit in-band control sequences. Ignore
eighth bit.
2 Enable 8-bit in-band control sequences.
<105> Enables or disables V.24 circuit type 105: RTS (Ready to Send).
0 Disable in-band reporting for this circuit.
1 Enable in-band reporting for this circuit.
<106> Enables or disables the circuit type 106: CTS (Clear to Send).
0 Disable in-band reporting for this circuit.
2 Enable in-band reporting for this circuit.
<125> Enables or disables the circuit type 125: RI (Ring Indicate).
0 Disable in-band reporting for this circuit.
1 Enable in-band reporting for this circuit.
<other> Not supported; leave ‘0’ for the unsupported circuit types.
<hook> Not supported; leave ‘0’.
Reporting Current or Selected Values
Command: +IBC?
Response: +IBC=<value>.<value>,<value>,0,0,0,0,<value>,0,0,0,0,0
Example: +IBC=0,0,0,0,0,0,0,0,0,0,0,0,0
Reporting Supported Range of Parameter Values
Command: +IBC=?
Response: +IBC: (0-2),(0-1),(0-1),0,0,0,0,(0-1),0,0,0,0,0)