Normally calls coming in from the PSTN to an unprovisioned telephone number are given session:hangup("UNALLOCATED_NUMBER"); Now I have a setup like this, that any call coming in from the PSTN to an unprovisioned telephone number is sent to an IP address, and works fine... session:execute('bridge', 'sofia/internal/gateway/'..dialledNumber..'@100.100.100.100:5061'); But is there a way I could separate by destination types by hardcoding it in? i.e if a caller dialing to 0800 or 0208 UK (sofia/internal/gateway/44800 (sofia/internal/gateway/44208 Any number beginning 44800 should go to session:hangup("UNALLOCATED_NUMBER"); And anything ells would go to the IP address session:execute('bridge', 'sofia/internal/gateway/'..dialledNumber..'@100.100.100.100:5061'); Thanks :) Deltukru