PASO #1 : Via SSH crear ruta para Tarjeta de LAN
(Importante: remplazar eth# con el numero de la tarjeta que se utilizara)

nano /etc/sysconfig/network-scripts/route-eth2

24.50.198.0/29 via 10.250.17.1 dev eth2

Guardar "Save"

"Reboot" al Server

PASO #2 : Crear SIP TRUNK

Outbound Caller ID: # Numero Piloto 

Trunk Name: liberty-out

PEER Details:
host=24.50.198.7
type=peer
disallow=all
allow=ulaw
nat=no
insecure=port,invite

USER Context: liberty-in

USER Details:
type=user
context=from-trunk