I have a 908e configured to connect to a kamailio system. Normal calls to our fxs lines work properly, but if a call goes through a ring-group, the outside caller gets no audio.
Some of our config:
voice ring-group 1838
type linear
description Main Hunt
num-rings 4
member 9563381728
login-member 9563381728
member 5128212959
login-member 5128212959
did "2142511838"
voice trunk T01 type sip
description "SIP Trunk to Kamailo"
sip-server primary KamailioIP
registrar primary KamailioIP
sip-header-passthrough both
outbound-proxy primary KamailioIP
max-number-calls 23
authentication username "devlab@ KamailioIP" password encrypted ""
voice user 5128212959
connect fxs 0/1
no cos
password encrypted ""
no special-ring-cadences
sip-authentication password encrypted ""
codec-list GLOBAL
!
!
!
voice user 9563381728
connect fxs 0/2
no cos
password encrypted ""
no special-ring-cadences
sip-authentication password encrypted ""
codec-list GLOBAL