Vocality V200 User Manual page 98

Vocality User Manual
User Manual for V200
Valid for V08_08.02 or V08_48.02
Unit 0 is configured to generate a transmit link clock of 128kbps ('Int'), which is used
internally as the GC1 reference (Clocking menu GC1 source) and also received by Unit 1
and used as the GC1 reference (Clocking menu GC1 source). Unit 1 then turns the clock
around (Tx clock set to 'RXC') and it is received back at Unit 0, which uses it as the Rx
clock source.
The programming of the clock references is essential to all tributary channels, since they
must use a clock reference to generate all local bit rates. In this example, the Global
Clock 1 bus ('GC1') takes the Port 1 Aggregate Rx clock and Port 2, which will be used to
connect a router, uses the GC1 as its reference for generating the Rx router clock. To go
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Figure 5-51 Data configuration settings for Unit 0
Figure 5-52 Data configuration settings for Unit 1