Generic Router / Firewall Configuration Guide
These settings are provided as a general aid to help ensure you achieve the best possible performance of your VoIP services.
These are non-specific to any brand or model of router or firewall, but should be set accordingly.
SIP Application Layer Gateway
- SIP ALG: OFF
- H.323 ALG: OFF
Port Triggering (to open specific ports in your firewall):
- SIP: 5060 - 5061 TCP/UDP In/Out
- SIP Proxy: 5070 TCP/UDP In/Out
- STUN: 3478 - 3479TCP/UDP In/Out
- IM: 5222, 5280, 5269 TCP In/Out
Disable SIP ALG -- Billion BiPAC
Log into your Billion router using your web browser. From the left-hand menu, navigate...
Disable SIP ALG -- Sonicwall
Regarding SIP ALG Almost all routers include a feature called SIP ALG, and are delivered...
Quality of Service (QoS) -- Cisco SRP527W Router
Go to Network setup > QoS > QoS Policy Select “Add entry” and configure...
Quality of Service (QoS) -- Billion BiPac Routers
Match your Billion BiPac router's QoS settings to the following screenshot ...
About SIP ALG .. and the need to disable it
SIP ALG Explained Most of today's routers implement SIP ALG (Application Layer Gateway)...