Hi fellas,
I have a situation
We have an issabel server which has 2 NICs
NIC1 for the connection to providers Intranet (10.105.0.0 network)
NIC2 for our local network and IP-Phones (172.16.0.0 network)
We have register sip accounts as a trunk with this configuration:
username=2222222
type=peer
trustrpid=yes
sendrpid=yes
secret=222222
qualify=yes
insecure=port,invite
host=10.105.X.X
disallow=all
allow=ulaw&alaw&gsm
and in my advanced sip i have:
NAT=Route
IPCONF=Static
ExternalIP: 10.105.Y.Y (MY NIC1 IP)
Local Net: 172.16.0.0 255.255.255.0
Reinvite Behavior: Yes
Everything works fine, but when i blind transfer a call to another phone or when i set always forward to another phone, the call will drop afters 30 seconds