Hello everyone, we have an issue with our UCM6510. SIP Trunk doesn’t work. The WAN port is connected to the internet for the use of GS Wave applications and the LAN port is used for SIP Trunk. We added a static route to connect to the SIP provider network but it still doesn’t work. Static route as follows:
Destination : @IP of the SIP Server(Provider)
Mask : 255.255.255.255
Gateway : @IP of the LAN interface
Interface we choose LAN2.
When we place a call using the SIP Trunk we can hear the person we are calling but he can’t hear us. Voice traffic is working one way only