Cisco ASR 900 Series Configuration Guide

To configure the CEM interface for CESoPSN:
interface cem <bay>/<slot>/<port>
cem <cem-group-no>
rtp-present
To configure recovered clock for CESoPSN:
recovered-clock <bay> <slot>
clock recovered <clock-id> differential cem <port-no> <cem-group-no> priority <priority no>
Verifying DCR in VT 1.5-T1 mode for CESoPSN
Use the show recovered-clock command to verify the DCR for CEM groups 59 and 60 configured in VT 1.5
mode on T1 interface:
Router#show recovered clock
Recovered clock status for subslot 0/5
----------------------------------------
Clock Type Mode CEM Status Frequency Offset(ppb) Circuit-No
Priority
11 OCx-T1 DIFFERENTIAL 59 ACQUIRING n/a 0/2/1/1
(Port/path/vtg/t1) 2
12 OCx-T1 DIFFERENTIAL 60 ACQUIRING n/a 0/2/1/2
(Port/path/vtg/t1) 2
Configuring ACR in CT3-T1 mode for CESoPSN
To configure the CEM group in the SONET controller:
configure terminal
controller sonet <bay>/<slot>/<port>
rate OC3
sts-1 <num>
mode ct3
t1 <t1_num> clock source recovered <clock-id>
t1 <t1_num> cem-group <cem-group-no> timeslots <1-24>
To configure recovered clock for CESoPSN:
recovered-clock <bay> <slot>
clock recovered <clock-id> adaptive cem <port-no> <cem-group-no> priority <priority no>
Verifying ACR in CT3-T1 mode for CESoPSN
Use the show recovered-clock command to verify the ACR for CEM groups 30 and 34 configured in CT3
mode on T1 interface:
Router#show recovered clock
Recovered clock status for subslot 0/5
----------------------------------------
Clock Type Mode CEM Status Frequency Offset(ppb) Circuit-No
Priority
17 OCx-T1 ADAPTIVE 30 ACQUIRING n/a 0/1/3 (Port/t3/t1)
2
1-Port OC-192 or 8-Port Low Rate CEM Interface Module Configuration Guide, Cisco IOS XE Everest 16.7.x (Cisco
ASR 900 Series)
59
Configuring SONET
Verifying DCR in VT 1.5-T1 mode for CESoPSN

Cisco ASR 900 Series Specifications

General

Brand	Cisco
Model	ASR 900 Series
Category	Network Router
Language	English