ADTRAN AOS Version R10.1.0 Command Reference Manual page 3645

Command Reference Guide
t38 error-correction
Use the t38 error-correction command to specify the type of fax error correction. Use the no form of this
command to disable this feature. Variations of this command include:
t38 error-correction fec
t38 error-correction redundancy
Syntax Description
fec
redundancy
Default Values
By default, t38 error-correction is set to fec for the Total Access 900(e) Series, the NetVanta 6310/6330
Series, the NetVanta 6355 Series, and the NetVanta 7000 Series products. The default setting is
redundancy for the NetVanta 6200 Series and the NetVanta 640 Series products.
Command History
Release 16.1
Release A5.01
Usage Examples
The following example sets the t38 error-correction to fec:
(config)#voice trunk t03 type t1-rbs supervision fgd role user
(config-t03)#t38 error-correction fec
60000CRG0-35E
Specifies forward error correction (FEC) as the fax error correction. FEC is
a system of error control where the sender adds redundant data to its
messages, allowing the receiver to detect and correct errors (within certain
bounds) without the need to request additional data from the sender.
Specifies redundancy as the fax error correction. Redundancy error
correction replicates the payload a user-specified number of times to
determine if errors are present. The number of redundant packets is set
using the command t38 v21-preamble-timeout <value> on page
Command was introduced.
Command default value changed to fec for the Total Access 900(e) Series,
the NetVanta 6310/6330 Series, the NetVanta 6355 Series, and the
NetVanta 7000 Series products.
Copyright © 2012 ADTRAN, Inc.
Voice T1 Trunk Command Set
3652).
3645