Command Reference Guide

3Com Router 5000 Family and Router 6000 Family frame-format (CT1/PRI Interface) ● 203
Command Reference
frame-format (CT1/PRI Interface)
Purpose fUse the frame-format command to set the frame format on the CT1/PRI
interface.
Use the undo frame-format command to restore to the default or esf.
Syntax frame-format { sf | esf }
undo frame-format
Parameters sf
Sets the frame format to super frame (SF).
esf
Sets the frame format to extended super frame (ESF).
Example Set the frame format of T1 1/0/0 to SF.
[3Com -T1 1/0/0] frame-format sf
View This command can be used in the following views:
■ CT1/PRI Interface view
Description A CT1/PRI interface supports two frame formats, that is, SF and ESF. In SF format,
multiple frames can share the same FSC and signaling information, so that more
significant bits are available for transmitting user data. The use of ESF allows you to
test the system without affecting the ongoing service.