An Application Layer Gateway (ALG) is a common function on router, however such functionality is not always implemented in the same way across different vendors. A SIP ALG will modify the VoIP traffic and in most cases cause the service to work unreliably if at all. We therefore STRONGLY recommend that you use a device without a SIP ALG, or one that allows you to fully disable such functionality.
Whenever possible you should choose a router that has QoS (Quality of Service) if you plan to share the same Internet connection with non-VoIP services.
We also recommend that you always make sure your modem is bridged and updated to the newest firmware available.
Airport Time Capsule, Airport Extreme (Wireless G)
|Belkin||F5D, F6D, F7D, FDS, and F9K Series, Any|
|D-Link||DIR600, DIR601, DIR615, DIR628, DIR825, DIR835, DIR655 Rev B (or newer)|
|Linksys||BEFSR Series (BEFSR41, BEFSR81, BEFSRX1, etc.)|
|Linksys||WRT110N, WRT120N, WRT160N, WRT320N, WRT350N|
|Linksys||WRT55AG, WRT54G, WRT54G2, WRT54GL|
|Linksys||WRV54G, WRV200, WRV210|
|Netgear||WNR1000, WNR2000, WNR2500, WNR3500, WNR834B|
|Netgear||CG814WCOM, CG814WG, CG814WT|