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T1/E1 & T3/E3 Commands
XSR CLI Reference Guide 2-67
Syntax
framing {sf | esf} (T1)
framing {crc4 | no-crc4} (E1)
framing {c-bit | m13} (T3)
framing {g751 | bypass} (E3)
Syntax of the “no” Form
Returntothedefaultframing settingbyusingthenoform:
no framing
Defaults
•T1:ESF
•E1:CRC4
•T3:c‐bit
•E3:g751
Mode
Controllerconfiguration:XSR(config-controller<xx>)#
Example
ThefollowingexampleconfigurestheT1controlleronNIMcard0,port0,withESFframing:
XSR(config)#controller t1 1/0
XSR(config-controller<T1-1/0>)#framing esf
ThisexamplesetstheT3controllerwithlinesourceclocking,M23framing,andchannelizedmode:
XSR(config-controller<T3-1/2/0>)#channelized
XSR(config-controller<T3-1/2/0>)#clock source line
XSR(config-controller>T3-1/2/0>)#framing m13
Note: The C-bit T3 parity framing format is an enhancement of the original M13 format. The main
difference is the C-bit framing format always stuffs the first bit of the 8th block in each sub-frame. So,
in C-bit format, C-bits permit greater management and performance functions on the M frame.
sf
T1frametypesettoSuperFrame(D4,F12).
esf
T1frametypesettoExtendedSuperFrame.
c-bit
T3frametypesettoC‐bit.
m13
T3unchannelizedframetypesettoM13.
crc4
E1frametypesettoCRC4frame.
no-crc4
E1frametypesettonoCRC4frame.
g751
E3frametypesettoG.751.
bypass
E3frametypesettobebypassed.Unchannelizedimplied.