Me again... this time VOIP

dl763 · 22 May 2009 at 15:13

Hi all,

We've got a client with a VPN between two Draytek 2820 routers. He has got VOIP going across the connection but can only get one way voice, data is fine.

I believe this is a problem with NAT? We were advised to open ports so it could get to the VOIP system (Panasonic something or other) which we did but it hasnt helped.

Anyone got any ideas? Would putting the VOIP switch on the DMZ help?

TIA

Jon

dl763 · 26 May 2009 at 08:16

Thanks guys,

I opened ports on both routers as advised by our phone tech support people. I'll try the RTP method.

dl763 · 26 May 2009 at 14:43

So I shouldnt need to open any ports? Apparently it improved when I opened ports 5004 to 5011 which are the RTP ports.

This is doing my head in now, it's been going on for nearly a week!

dl763 · 28 May 2009 at 08:11

If I put the Panasonic into the DMZ that would bypass the firewall wouldnt it?

dl763 · 29 May 2009 at 08:17

The client could here more than nothing but not much more...

dl763 · 1 Jun 2009 at 08:59

I'm thinking it could be a fubard router now. Is it possible one of the routers could just need resetting to factory settings?