I have a series of extensions ranging from 101 through 200. In order to get to our voicemail system (hosted elsewhere via SIP), I need to prepend 999 to the extension
So instead of the sip header: sip:101@mysipprovider I need to send: sip:999101@mysipprovider
I have tested a manual translation, which works fine, but I am limited to 15 rules which won't work.
voice translation-rule 1
rule 1 /^101/ /999101/
So I need an expressed-based translation-rule that will make this happen for all the extensions.