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628 posts

Ultimate Geek
+1 received by user: 4


  Reply # 532353 12-Oct-2011 14:14 Send private message

techleigh: Well the international calls seem to be OK after turning off the SIP ALG but now I am getting complaints about people calling us on local calls and then there is no one there (but apparently they can hear us but we can't hear them).

Was not sure how to "port forward" the PAP2T from the router. Would this necessarily help in this case or is there something else going on.
PAP2T seems to get the IP address that the router decides but how to set up a static IP for the PAP2T.
Do you do this in the GUI on the router (TP Link TD-W8960N)??

Any help appreciated.
Despite the calls being cheaper my wife just wants everything to work like it used to so if I can achieve this then it's a win-win situation

Andrew


Hi Andrew,

1)
Set a static ip address, in the same subnet mask but outside of the DHCP range on the pap2t (so if you have  network of 192.168.1.0/24 with the DHCP range 192.168.1.10 - 192.168.1.200 then you could set your PAP2T to use an IP of 192.168.1.201 for example.
OR
in the TP-Link router, find the current dhcp assigned ip address of the PAP2T and add a DHCP reservation for that mac address, so it always gets the IP address.  Either way the PAP2T will always have the same internal LAN IP which is important for Port Forwarding.

2)
Follow this link  It shows how to port forward port 5060 (SIP) you will also need to add a port forward range of 10000- 20000 UDP for RTP (this is the audio/voice data itself).  So where it shows the Name2 rule (using 6060) ignore that instead make the rule this:
External Port Start: 10000
External Port End: 20000
Internal Port Start: 10000
Internal Port End: 20000
Protocol: UDP (though TCP/UDP is fine)

152 posts

Master Geek


  Reply # 532430 12-Oct-2011 17:00 Send private message


45 posts

Geek


  Reply # 534339 17-Oct-2011 15:56 Send private message

sbiddle: TP-Link make great modems and their DSL performance is great. I recommend them for anybody who wants rock solid DSL performance but would never use one if their is VoIP gear behind them due to the ALG issue. TP-Link have been promising the ability to disable the ALG in the web GUI but that hasn't eventuated yet.

Do you have a recommended device for ADSL2 modem/router/wifi when VoIP devices WILL be behind it?  

20204 posts

Uber Geek
+1 received by user: 1767

Moderator
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Biddle Corp
Subscriber

  Reply # 534363 17-Oct-2011 16:38 Send private message

phrozenpenguin:
sbiddle: TP-Link make great modems and their DSL performance is great. I recommend them for anybody who wants rock solid DSL performance but would never use one if their is VoIP gear behind them due to the ALG issue. TP-Link have been promising the ability to disable the ALG in the web GUI but that hasn't eventuated yet.

Do you have a recommended device for ADSL2 modem/router/wifi when VoIP devices WILL be behind it?  


Cisco SRP527 or any of the Draytek devices.

 

45 posts

Geek


  Reply # 534446 17-Oct-2011 19:26 Send private message

Thanks for the input.



47 posts

Geek


  Reply # 536993 24-Oct-2011 19:47 Send private message

Okay so have finally found enough time and courage to try the static IP and the port redirect as mentioned above.
I shall post a picture of what the TP-Link NAT looks like - can someone say whether this is how it should be to redirect the traffic to the Linksys PAP2T.

Just to put a spanner in the works we get some local calls where the phone will ring and we pick it up and there is nothing there. When talking to the person that called they say that the phone just kept ringing and they did not detect that we had picked up the call. Then we hang up and the phone immediately starts ringing and then we can answer the call and the other party is there.
Some calls are just dead - not too many but a few - so we may get 3 calls in a row from the person and we hear nothing and they hear us talking.

Any help there.

Am happy to try one of the recommended Linksys routers if World Exchange are happy to lend me one for a few days or a week, to see if that makes any difference.

Andrew

screen pic of router GUI
http://www.geekzone.co.nz/imagessubs/ecc26c78305e8493e21d2a5ca8a4d777.jpg

45 posts

Geek


  Reply # 537062 24-Oct-2011 22:28 Send private message

Are you *sure* you have disabled SIP ALG? The initial link was for a different router. The second link was correct - same as this one: http://www.tp-link.com/en/article/?id=342 
I had very similar problems with the same router that were solved by turning off SIP ALG. 



47 posts

Geek


  Reply # 537302 25-Oct-2011 14:38 Send private message

phrozenpenguin: Are you *sure* you have disabled SIP ALG? The initial link was for a different router. The second link was correct - same as this one: http://www.tp-link.com/en/article/?id=342 
I had very similar problems with the same router that were solved by turning off SIP ALG. 



Actually tried this version of the disabling : Had done previously as far as I had known. Did again as accidentally turned off the router on weekend and the instructions apparently are undone if you reboot or restart router as per TP-Link instructions.

I shall monitor the situation over the next few days



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