Interface Configuration
7750 SR OS Interface Configuration Guide Page 183
Configuring Cisco HDLC on a Channelized Port
Use the following CLI syntax to configure cHDLC:
sonet cHDLC CLI Syntax: config# port port-id 
tdm
ds3 [sonet-sdh-index]
channelized {ds1|e1}
no shutdown
ds1 
channel-group channel-group
cisco-hdlc
down-count down-count
keepalive time-interval
up-count up-count
encap-type {bcp-null|bcp-dot1q|ipcp|ppp-auto|frame-
relay|wan-mirror|cisco-hdlc}
timeslots timeslots
no shutdown
The following example displays SONET/SDH access mode configuration command usage:
Example:A:ALA-29>config>port>tdm# ds3
A:ALA-29>config>port>tdm>ds3# channelized ds1
A:ALA-29>config>port>tdm>ds3# no shutdown
A:ALA-29>config>port>tdm>ds3# exit
A:ALA-29>config>port>tdm# ds1 1
A:ALA-29>config>port>tdm>ds1# no shutdown
A:ALA-29>config>port>tdm>ds1# channel-group 1
A:ALA-29>config>port>tdm>ds1>channel-group# timeslots 1-20
A:ALA-29>config>port>tdm>ds1>channel-group# encap-type cisco-hdlc
A:ALA-29>config>port>tdm>ds1>channel-group# exit
A:ALA-29>config>port>tdm>ds1# channel-group 1
A:ALA-29>config>port>tdm>ds1>channel-group# no shutdown
A:ALA-29>config>port>tdm>ds1>channel-group# exit
A:ALA-29>config>port>tdm>ds1# exit
A:ALA-29>config>port>tdm#