Nortel Networks 8000 - Manual (Page 77)

4 POS and CPOS interface configuration
Nortel Secure Router 8000 Series
Configuration -WAN Access
A
When the CPOS interface card on the SR8000 routers and other devices are connected,
configure the clock mode as the master clock mode.
Do as follows on the routers:
Step 1 Run:
system-view
The system view appears.
Step 2 Run:
controller cpos cpos-number
The CPOS interface view appears.
Step 3 Run:
clock { master | slave }
The command configures the clock mode of the CPOS interface.
The CPOS interface supports two clock modes:
• Master clock mode uses internal clock signal.
• Slave clock mode uses line clock signal.
By default, clock mode of CPOS is slave mode.
—End
4.3.3 Configuring frame format
Do as follows on the routers:
Step 1 Run:
system-view
The system view appears.
Step 2 Run:
controller cpos cpos-number
The CPOS interface view appears.
Step 3 Run:
frame-format { sdh | sonet }
The command configures the frame format of the CPOS interface.
The frame format determines the application mode of CPOS: in SONET mode or SDH mode.
By default, the frame format of CPOS is SDH.
4-16 Nortel Networks Inc. Issue 5.3 (30 March 2009)