English to Russian Tech/Engineering Computers: Systems, Networks Ethernet

Timing and Synchronization

Timing Options Internal Clock, Loop-Timed Clock, External Clock.
Synchronization Sources.

Internal Clock, *****span clock timing***** derived from incoming HDB3 links
(Loop-Timed), External Clock, 75 Ohms 2 MHz (TTL), 2.048 Mbps

(BITS) clock.

1+1 Timing (PLL clock synchronization circuit) Redundancy
The user must be able to select synchronization priority
Default Option Internal Clock (Stratum 3).


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