[asterisk-users] DUNDi or ENUM

[Femi]

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