Hi
We are using interaction center(inin) for the fax service , there is no trunk created for fax numbers in cucm , users use their DN for faxes also ,
There are two problems facing now
remote users are not hearing fax tone , i don't know the tone has to give by the interaction center server or the gateway
second problem some analog users especially (speed 2400 ) cannot send the faxes
dial-peer voice 306 voip
destination-pattern 'number'
session protocol sipv2
session target ipv4:10.0.1.1:5062
dtmf-relay rtp-nte
codec g711ulaw
fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback cisco
no vad
!