Avaya IP Office Installation Manual page 175

Objective - Set a chosen digital trunk as the network clock source and set all other digital trunks as fallback or
unsuitable.
Procedure
1. Within the IP Office configuration, select
2. For each digital line, select the line and on the Line tab select whether that trunk should provide the clock source for
the network or whether the trunk is unsuitable. For E1R2 trunks the Clock Quality setting is on the Advanced tab.
3. Ensure that only one trunk is set to Network. This should preferably be a direct digital trunk to the central office
exchange.
4. One other trunk can be set a Fallback should the selected Network trunk connection be lost. If possible this should be a
trunk from a different provider since that reduces the chances of both sources failing at the same time.
5. Ensure that all other digital trunks are set as Unsuitable.
IP Office Installation
IP Office
Line.
External Trunk Configuration: Clock Quality
15-601042 Issue 19l (06 November 2008)
Page 175