Hi List, What is the best way to implement this solution with several branches? SIP PHONE 1 --- *SERVER 1 ---WAN--- *SERVER 2 --- SIP PHONE 2 WAN SIP PHONE 3 --- *SERVER 3 ---WAN--- *SERVER 4 --- SIP PHONE 4 The Asterisk boxes will have one leg on the LAN side and another on the WAN side. The SIP phones will only be able to see the local server and not the remote server or the remote SIP phone since the WAN service may be provided by different service providers I guess I would have to do this with SIP or IAX trunks Would DUNDi or ENUM work in this situation? Thanks Femi