Comtrol AT Commands for SmartACFL User Manual

Page 70

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Command Reference Manual

3-50

Conexant

100722A

3.2.7 V.8/V.8bis

Commands

3.2.7.1 +A8E - V.8 and V.8bis Operation Controls
This command is defined for two conditions: as a parameter while the modem is on-hook, and as an action command while
the modem is off-hook. If enabled, V.8 negotiation does not preclude simultaneous implementation of other negotiation
means (e.g., V.8bis, V.18, V.32bis Annex A).

This command is a compound parameter if issued while the modem is on-hook, used to precondition V.8 and V.8bis
originating and answering operation. It is issued by the DTE before the Dial (D) or Answer (A) command, regardless of the
state of the +FCLASS parameter.

This command is an action command if issued while the modem is off-hook, to (re)start V.8 or V.8bis negotiation. For
example, if initial V.8 negotiation failed, but subsequent T.30 negotiation indicated V.8 capability, this command may be used
to initiate V.8 negotiation.

Syntax

+A8E=<v8o>,<v8a>,<v8cf>[,<v8b>][,<cfrange>][,<protrange>]

Defined Values

<v8o>

Decimal number which enables/disables issuance of +A8x indications during modem-controlled
V.8 origination negotiation.

1

Enable DCE-controlled V.8 origination negotiation without +A8x indications.
(Default.)

6

Enable DCE-controlled V.8 origination negotiation with +A8x indications.

<v8a>=

Decimal number which enables/disables issuance of +A8x indications during modem-controlled
V.8 answer negotiation.

1

Enable DCE-controlled V.8 answer negotiation without +A8x indications. (Default.)

5

Enable DCE-controlled V.8 answer negotiation with +A8x indications.

<v8cf>=

Set the V.8 CI signal call function to the hexadecimal octet XY.

0

(Default.)

21
C1

<v8b>=

Decimal number which enables/disables V.8bis negotiation.

0

Disable V.8bis negotiation.

1

Enable V.8bis negotiation. (Default.)

<cfrange>=

“<string of values>“. Applicable only for <v8a>=5. Not supported.

< protrange >=

“<string of values>“. Applicable only for <v8a>=5. Not supported.

Default values:

1,1,00,1,0,0

The ATD and ATA commands behave as specified in V.250, and +A8n indications are not generated by the modem.

For subparameter values <v8o>=6 and <v8a>=5, the +A8I indications are issued during the course of the V.8 session to
notify the DTE when the relevant V.8 signals are received.

Reporting Current or Selected Values
Command: +A8E?
Response:

+A8E: <v8o>,<v8a>,<v8cf>[,<v8b>][,<cfrange>][,<protrange>]

Example:

+A8E: 1,1,00,1,0,0

For the defaults

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