Problem with NetGear WNDR3700 and VOIP setup

[Gudge]

I recently bought a Netgear WNDR3700 to replace my Linksys WRT54G. Everything works great except my VOIP phone.

My VOIP device is a Grandstream HT502. I've set up port forwarding for UDP ports 69, 5060-5063 and 10,000-20,000, (the same ports were forwarded by the Linksys router).

I can swap out the Netgear and put the Linksys back in and the VOIP setup starts working again.

Does anyone know what settings I need in order to get VOIP to work with the Netgear WNDR3700?

Thanks

Gudge

 

[thiggins]

Sometimes routers need an ALG (Application Layer Gateway) for some VoIP adapters to work behind NAT routers. Or there may be a setting in the Grandstream that you can try.

You can also try putting the HT502 in front of the WNDR3700.

 

[Gudge]

Tim,

Thanks for the reply.

Do you know if putting the HT502 between my router and the cable modem will affect routing performance at all? Will I effectively be in a double-NAT situation?

I know I don't have access to all the settings on the Grandstream (Broadvoice locks the advanced settings down), but I'll see what things I can tweak.

Cheers

Gudge

 

[thiggins]

Do you know if putting the HT502 between my router and the cable modem will affect routing performance at all? Will I effectively be in a double-NAT situation?

It could if you have fast download speed. I'd just try it and see.

 

[Gudge]

Reporting back...

I was finally able to get my VOIP setup (HT-502 ATA and BroadVoice) to work with the Netgear WNDR3700.

I had to install the V1.0.4.55 firmware and check the 'Disable SIP ALG' checkbox on the WAN Setup page. I also configured my HT-502 to have a static IP address and static DNS settings. The reason for this is to avoid the WNDR3700 processing the DNS requests (which it would do if I used DHCP).

I was able to make outbound calls without checking the 'Disable SIP ALG', but in order to get inbound calls to work, I had to check that checkbox.

Gudge

 

[thiggins]

Thanks for reporting back. Glad you got it working.