- Firmware Version: 22.214.171.124 and later
- Model: S-Series PBX
As the Multisite Interconnection function becomes more and more widely used, users have been looking for a solution that can allow branches use the trunks from headquarters or the other branches.
Matters need Attention
The IVR Extensions range of the HQ and the Branches MUST be different.
User can edit the range via this path: Settings -> PBX-> General-> Preferences-> Extensions Preferences->IVR Extensions
Branch 1-> Dial HQ's IVR number->Dial the Outbound route ->HQ's Outbound Route/ Key Press Event- Disa->HQ's outbound route (MUST select one available trunk)->External number
Figure 1- Branch1 use Trunks from HQ
Branch1-> Dial Branch2’ s IVR number-> Dial the Outbound route/ Key Press Event- Disa->Branch2' s Outbound Route（MUST select one available trunk)->External number
Figure 2- Branch1 use Trunks from Branch2