7705 SAR Interfaces
316
Interface Configuration Guide
3HE 11011 AAAC TQZZA Edition: 01
Description This command enables the 7705 SAR to interoperate with SDH networks that use
subnetwork connection protection (SNCP). When ais-propagation is enabled, the
7705 SAR can use SDH signaling to make pseudowire switching decisions on Cpipes
configured for redundancy.
For more information about 7705 SAR interoperation with SDH SNCP, refer to the
7705 SAR Services Guide, “AIS Fault Propagation”.
Default n/a
clock-mode
Syntax clock-mode adaptive
clock-mode {dcr-acr | differential} [timestamp-freq {19440 | 25000 | 77760 | 103680}]
Context config>card>mda
Description This command defines the clocking mode and the associated timestamp frequency (if
differential or dcr-acr clocking mode is configured).
All clock modes are supported on the following:
• 16-port T1/E1 ASAP Adapter card, version 2
• 32-port T1/E1 ASAP Adapter card
• 7705 SAR-A (variant with T1/E1 ports)
• 7705 SAR-M (variants with T1/E1 ports)
• 7705 SAR-X
• T1/E1 ports on the 4-port T1/E1 and RS-232 Combination module (the clock frequency
value configured for dcr-acr clock mode or differential clock mode on one module will
take effect on both modules installed in the 7705 SAR-H)
Only adaptive mode is supported on the following chassis and cards:
• 16-port T1/E1 ASAP Adapter card, version 1
Only differential mode is supported on the following cards:
• 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card (DS1/E1 channels)
• 4-port DS3/E3 Adapter card (clear channel DS3/E3 ports and DS1/E1 channels on
channelized DS3 ports (E3 ports cannot be channelized)); differential mode on DS1/E1
channels is supported only on the first three ports of the card
Default adaptive (if no clocking mode is configured)
differential (for 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card and 4-port DS3/E3
Adapter card)
To Next Page
Loading...
