CIPT2 – Multisite Dial Plan: Implementing Intersite PSTN Backup
– WAN link between 2 clusters
– WAN goes down!
– Lets use the PSTN instead 🙂
– Route Groups used with SIP or ICT as Primary Device
– Secondary Device would be PSTN Gateway
Digit Manipulation required for digits to work on the PSTN
Within the Route List we can also modify the Calling and Called Party details.
We can use the Calling Party External Phone Number Mask feature or we can manually set a Calling Party Mask
We can also modify the Called Party details
Without a local cluster at 1 of the sites and only a Gateway, we would look at SRST.