ERROR Otherwise.
3.2.7 V.8/V.8bis Commands
+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 +A8
x
indications during modem-controlled V.8 origination negotiation
1 Enable DCE-controlled V.8 origination negotiation
wA8x indications. (Default.)
6 Enable DCE-controlled V.8 origination negotiation
with +A8
x
indications.
<v8a>= Decimal number which enables/disables issuance of +A8
x
indications during modem-controlled V.8 answer negotiation.
1 Enable DCE-controlled V.8 answer negotiation
wA8x indications. (Default.)
5 Enable DCE-controlled V.8 answer negotiation with
+A8
x
indications.
<v8cf>= Set the V.8 CI signal call function to the hexadecimal octet value X.
<v8b>= Decimal number which enables/disables V.8bis negotiation.
0 Disable V.8bis negotiation. (Default.)
1 Enable DCE-controlled V.8bis negotiation.
2 Enable DTE-controlled V.8bis negotiation.
<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,,1,"",""
The ATD and ATA commands behave as specified in §6.3.1/V.25ter and §6.3.5/V.25ter,
respectively, and +A8n indications are not generated by the modem.
For subparameter values <v8o>=6 and <v8a>=5, the +A8I, +A8C, +A8A, +A8J, and +A8M
indications are issued during the course of the V.8 session to notify the DTE when the
relevant V.8 signals are received. The modem controls the V.8 session, however, and the
+A8M command is not used.
Reporting Current or Selected Values
Command: +A8E?
Response: +A8E: <v8o>,<v8a>,<v8cf>[,<v8b>][,<cfrange>][,<protrange>]
Example: +A8E: 1,1,,1,"","" For the defaults
Reporting Supported Range of Parameter Values
Command: +A8E=?
Response: +A8E: (<v8o> range),(<v8a> range), (maximum size of v8cf in octets), (<v8b>
range),(<cfrange> option bit
range),(<protrange> option bit range)
Example: +A8E: (1,6),(1,5),(1),(0),(1,6),(1)
