Ft1 Frame-Format; Ft1 Loopback - 3Com 3C13618 Command Reference Manual

Example
# Set the line code format of the T1-F interface to AMI.
[3Com-Serial0]ft1 code ami

3.5.5 ft1 frame-format

Syntax
ft1 frame-format { sf | esf }
undo ft1 frame-format
View
T1-F interface view
Parameter
sf: Adopts SF as the frame format for the T1-F interface.
esf: Adopts ESF as the frame format for the T1-F interface.
Description
Using the ft1 frame-format command, you can configure frame format for a T1-F
interface. Using the undo ft1 frame-format command, you can restore the default
frame format of the interface.
By default, T1-F interfaces use esf.
T1-F interfaces support SF and ESF. In SF, multiple frames can share the same
frame synchronization and signaling information, so that more significant bits can be
used for transmitting user data. In practice, the system test is often required. The
application of ESF technology can ensure normal service when system test is being
carried out.
Example
# Set the frame format for the T1-F interface to SF.
[3Com-Serial0]ft1 frame-format sf

3.5.6 ft1 loopback

Syntax
ft1 loopback { local | remote }
Interface Management
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