Can i limit to 4 digit the funtion of CfwAll??
Here's an example:
3 sites: Site A, Site B, and Site C. Each site has local gateways and belong to one cluster.
Each site has one partition for the local phones and another partition for the local PSTN gateways.
Create a Internal_CSS calling search space that only includes the local phone partition for all three sites. Assign this CSS to the call forward all. So long you make sure all route patterns that specify a PSTN gateway are in the gateway partitions and the Internal_CSS does not specify a gateway partition, then no one will be able to cfAll to a PSTN number.