Ive installed a 9100 at a main site. Im trying to connect 3 Cordless and 3 Desk set at 3 remote sites, all are IP. The cordless is a Yealink and Im having alot of trouble with no Talkpath, rings fine. Any ideas on another Cordless that has to be IP?

Sounds like you do not have port forwarding in your router set to the VoIP DB DSP address, or the address is not on the same subnet as the VoIP db.

How is Yealink IP cordless/phone?