Tadiran Telecom Coral IPx 500, Руководство по установке

Страница: 537 / 544

Peripheral Cards
10-17
Dig
ital
T
run
k Synchr
on
izati
on
10
determines if the digital trunk card in the indicated position is properly synchronized
with the network. If the system is functioning properly, the MSBipx card locks onto the
primary external clock source.
If the primary digital trunk card issue a LOS or Red alarm, and a secondary external
clock source be defined, the system determines if the secondary digital trunk card is
functioning properly, and the MSBipx locks onto the secondary external clock source.
If no secondary clock source is defined, or the secondary clock is also in LOS or Red
alarm, the Coral IPx 500 system uses its internal clock source, and the system free runs.