C. Router

Many routers have proven to be compatible when installed correctly, therefore we do not recommend a specific route

Tips for a successful configuration

-UDP-NAT timeout for about 120-130 seconds

-Deactivation of SIP-ALG

-Activation of the consistent nat feature if applicable

-Deactivation of Store&Forward for NFON connections

We strongly recommend deactivating SIP ALG (SIP Helper...) on the router!

Since SonicWall routers / firewalls have a highly complex structure, we cannot provide support regarding the functionality in combination with the PBX.