Cisco T1 User Manual

Benefits of Clock Recovery
• Customer-edge devices (CEs) can have different clock from that of the Provide-edge devices (PEs).
• In CESoPSN, a slave clock is supported for clock redundancy.
Scaling Information
Pseudowires Supported (Number of Clocks Derived)IM Card
4848-Port T1/E1 CEM Interface Module
Prerequisites for Clock Recovery
• The clock of interface modules must be used as service clock.
• CEM must be configured before configuring the global clock recovery.
• RTP must be enabled for DCR in CEM, as the differential clock information is transferred in the RTP
header.
Restrictions for Clock Recovery
• The reference clock source is used and locked to a single clock.
• The clock ID should be unique for a particular interface module for ACR or DCR configuration.
• ACR clock configuration under each controller should be performed before configuring CEM group.
48-Port T1/E1 CEM Interface Module Configuration Guide, Cisco IOS XE Fuji 16.7.x (Cisco NCS 4200 Series)
41
Clock Recovery System for CESoPSN
Benefits of Clock Recovery

Cisco T1 Specifications

General

Brand	Cisco
Model	T1
Category	Control Unit
Language	English