System Management
220
Basic System Configuration Guide
3HE 11010 AAAC TQZZA Edition: 01
In addition, T1/E1 CES circuits on the following can be independently configured for
adaptive timing (clocking is derived from incoming TDM pseudowire packets):
• 16-port T1/E1 ASAP Adapter card (version 1 is not supported on the
7705 SAR-18)
• 32-port T1/E1 ASAP Adapter card
• 7705 SAR-M (variants with T1/E1 ports)
• 7705 SAR-A (variant with T1/E1 ports)
• T1/E1 ports on the 4-port T1/E1 and RS-232 Combination module
T1/E1 CES circuits on the following can be independently configured for differential
timing (recovered from RTP in TDM pseudowire packets):
• 16-port T1/E1 ASAP Adapter card, version 2
• 32-port T1/E1 ASAP Adapter card
• 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card (DS1/E1 channels)
• 4-port DS3/E3 Adapter card (DS1/E1 channels on DS3 ports; E3 ports cannot
be channelized); DCR on DS1/E1 channels is supported only on the first three
ports of the card
• 7705 SAR-M (variants with T1/E1 ports)
• 7705 SAR-A (variant with T1/E1 ports)
• T1/E1 ports on the 4-port T1/E1 and RS-232 Combination module
Adaptive timing and differential timing are not supported on DS1 or E1 channels that
have CAS signaling enabled.
A T1/E1 port can be configured to be a timing source for the node.
Each SONET/SDH port and each T1/E1 CES circuit on a 2-port OC3/STM1
Channelized Adapter card can be independently configured to be loop-timed or
node-timed; each DS3 circuit can be independently configured to be loop-timed or
free-run. A SONET/SDH port can be configured to be a timing source for the node.
Each SONET/SDH port on a 4-port OC3/STM1 Clear Channel Adapter card can be
independently configured to be loop-timed or node-timed. A SONET/SDH port can
be configured to be a timing source for the node.
Each SONET/SDH port on a 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card
can be independently configured to be node-timed; each T1/E1 CES circuit can be
independently configured to be node-timed, loop-timed, or differential-timed. A
SONET/SDH port can be configured to be a timing source for the node.
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