Problems with incoming calls - VOIPTalk.org/ DG834GT/ SPA941

Hi everyone, I'm having problems with incoming calls - when calling my 0845 number from my mobile I just get a busy signal. I can make outgoing calls without problems, and sound quality is fine, and both parties can speak and be heard.

But whenever I try and make an incoming call, the phone doesn't ring and I get a busy signal.

Here's the set up:

VOIP provider - VOIPTalk.org
Phone - Linksys SPA941
ADSL Router - Netgear DG834GT

I've tried upgrading the firmware on both phone and router (both now at manufacturers latest) but no joy, and tried various settings (suggestions I've seen in other forums) but nothing seems to work.

I'm pretty new to VOIP so not sure what a lot of the settings mean/do, but am quite capable of experimenting and following suggestions!

Cheers

Charlie

Welcome to Voipuser forums.

Have you forwarded the voip ports from your modem/router to your telephone?

I've tried forwarding the ports (5060-5065), and also tried forwaring all ports, but no joy!

Another thing I've tried is turning on "Disable SIP ALG" on the router, on recommendation of VOIPTalk, but still nothing (the router is actually a Sky router, but I had to flash Netgear firmware onto it to open up the option to turn off SIP ALG).

I should also add that originally the phone was working fine at one point in the current set up, and stopped working at some point in the last month, without any settings being changed my end (I get very low volume of incoming calls so not sure exactly when the problem started). Both my ISP (Sky) and VOIPTalk say no settings have changed at their end either!

Cheers

Charlie

You need to forward ports UDP 5060 (sip signaling) and UDP 8000 - 8010 (RTP packets). Also set STUN (stun.voipuser.org) on the phone if you can.


STUN p 1-11 in the manual
http://www.linksys.com/servlet/Satellit ... 6655272B10

Ok, I've tried that, both the port forwarding and setting STUN Enable to yes, and the STUN Server to stun.voipuser.org. Still no joy I'm afraid. Any other suggestions? (I also tried forwarding ports 16384 to 16482 as it said to in that doc you linked to)

My brother's bringing his ADSL router over in a bit so I can try that (try and work out where the problem is occuring!)

Can you turn off the Firewall on the Netgear?

I don't think so - there's no obvious option to. I can turn off all the rules, and there's a schedule option which I've set so that it's off for now (although I think that just schedules the services/rules not the firewall)

I've got a log file (I took the steps in that doc), but have no idea what the info means! Would it help if I post it?

You could try posting the settings on the Netgear as it will probably help. Do you restart it after you have changed the setting..... you probably should do so.

Are your phone settings the same as these
http://www.voiptalk.org/products/linksy ... etup.html?

Have you tried connecting to voipuser? It might be easier to debug on that as Voiptalk is nothing to do with voipuser so we cannot trace problems.

I've not tried connecting to voipuser - what do I need to set up to do that?

Yes, phone settings are as in screenshot.

Here are (current) router settings (and yes I am rebooting it after each change I make):

Firewall rules:
Outbound = 5060-5065, any LAN users, any WAN users
The default Outbound is "Allow always"
Inbound = 5060-5065, LAN 192.168.1.6, any WAN
Inbound = 8000-8010, LAN 192.168.1.6, any WAN

WAN Setup:
Connect Automatically, as Required - yes
Disable Port Scan and DOS Protection - no
Default DMZ Server - no
Respond to Ping on WAN Port - yes
MTU Size - 1458
Disable SIP ALG - yes

Dynamic DNS: Off

LAN IP Setup:

IP Address - 192.168.1.7
IP Subnet Mask - 255.255.255.0
RIP Direction - NONE
RIP Version - RIP-1

Use Router as DHCP Server - yes
Start IP - 192.168.1.2
End IP - 192.168.1.254

Address reservation:
192.168.1.6 - Linksys phone

Remote management: off

Static Routes: None

UPnP:

Turn UPnP On - yes
Advertisment Period - 30 (minutes)
Advertisment Time to Live - 4 (in hops)

UPnP Portmap Table
Active Protocol Int. Port Ext.Port IP Address
Yes UDP 7865 5087 192.168.1.2
Yes TCP 30918 30918 192.168.1.2
Yes UDP 30918 30918 192.168.1.2

I think that's all the "important" settings

Ok, so I've just been playing with a borrowed ADSL Router - an old Safecom SAMR-4110

I didn't really change any of the settings in the router, other than LAN IP set up so the default gateway is correct (and ADSL username/pass). The firewall is disabled.

Initially the same problem on the phone BUT - when I changed these settings on the phone it works:

NAT Mapping Enable: No (was yes)
NAT Keep Alive Enable: No (was yes)

Outbound Proxy: voiptalk.org (was nat.voiptalk.org:5065)

When I go back to the Negear router, I still get engaged signal on incoming calls.

According to a post on Netgear forums, turning on "Disable port scan and DOS protection" is disabling the firewall, but this had no effect.

So, it looks like it's a router/NAT problem?

Looking around the net is seems that lots of people have had problems setting up this particular router. It offers a symmetric NAT and that makes configuration more difficult and you will need to forward ports. Your current configuration seems to me to have errors in several places but I am not sure about that.
I would start by resetting the router to factory defaults. Then I would try setting it up using the "set up wizard" and the make sure that the device gets IP from your provider and that you can connect your computer OK. Apparently that works OK and is easy.

Get that done first.

Find out what IP your phone gets and set that in the router as the phones static IP.

Next, make sure that SIP ALG is ON .... sometime it works but often it does not.... try it anyway and then report here.

Resetting the router to factory settings did the trick (SIP ALG is on). Although I've already tried this, settings have been changed on the phone since, so maybe it was a combination of both! I'm not changing anything now!

Anyway, thank you very much for all your help, not sure I'd have got here without it - I definately owe you a pint or two!

For anyone else out there having problems with VOIP and Sky routers, I'd recommend putting the Netgear firmware on your router. Sky say that this is acceptable but you loose any technical support (which TBH is pretty useless anyway)!

Thanks again

Charlie

Glad to hear that it is working. SIP ALG is supposed to work with the latest release of the Netgear firmware ... I guess it does!

Enjoy your voip.