I’m trying to filter all calls from a particular caller ID prefix to a custom action.
When I do this with the caller ID number set to _044843NXXXXXX calls are filtered and routed correctly.
A problem arises because numbers of different length are presented and so I’ve been trying to use _044843. to catch all caller IDs, but this case the call is not caught by this inbound route and not routed as expected.
I have tried a number of variations but it looks like any use of ‘.’ breaks the filter.