ADTRAN AOS Version R10.1.0 Command Reference Manual page 3251

Command Reference Guide
t38 fallback-mode g711
Use the t38 fallback-mode command to specify the transmission mode used when T.38 fax relay cannot
be successfully negotiated at the time of the fax transfer. Use the no form of this command to disable this
feature.
Syntax Description
g711
Default Values
By default, t38 fallback-mode is to G.711.
Command History
Release 16.1
Release A5.01
Usage Examples
The following example enables the t38 fallback-mode on the Media Gateway Control Protocol (MGCP)
endpoint:
(config)#voice mgcp-endpoint 1
(config-mgcp-1)#t38 fallback-mode g711
60000CRG0-35E
Specifies that fax operation revert back to analog mode (G.711).
Command was introduced.
Command default was changed to G.711.
Copyright © 2012 ADTRAN, Inc.
MGCP Command Set
3251