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122 posts

Master Geek
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Topic # 23628 4-Jul-2008 16:20
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Hi I have the WAG200G router and a PAP2T  which was a replacement for my previous WAG54GP V2

The issuse I am having is every few days (sometimes hours) I need to power down both devices to be able to connect to a VOIP server - although I was having similar issues with the previous unit until it died but the main issue is the XNET VOIP server and not my secondry VOIP service

What will happen is this

when first rebooting both devices they will connect to both VOIP servers then hours / Days later one of the two servers will no longer connect to VOIP but in most cases this is the XNET server that looses connection and as that is the main service I use it is quite annoying ( however on the odd time it has dissconnected from my secondry VOIP service which is UK based )

I have tried to set a SIP port to the secondry service as either 5060 or 5061 as they reconmend but it makes no difference - for example as I type there is no connection to XNET so I logged into my PAP2T and disabled line 2 and reset the PAP2T still no service I have tried port forwarding in the router itself but this is no help as the PAP2T will change it's internal IP address

As the WAG200G does not have a facility to allocate an IP address to a mac address the later option is not viable

Ok I will proberly get an answer saying reboot the router as required - but this is not always an option right now flatmates are on skype or something with rellies in Vanuatu so rebooting modem will only annoy them but then why should I need to

As I say this issue also happened with my old setup - WAG54GP V2 as well so I am back to thinking It could be an xnet issue as I have disabled line 2

I also noticed early hours this morning 0430 - 0500 the router itself would only connect to ADSL for less than a minute then a red LED on the internet would show - very annoying when skiming the net before work and checking emails etc

I really have no idea of what to try next (apart from maybe having access to line 1 which wont happen )I have a reasonable understanding of networking etc ( I used to install huge infurstructure cabling in the uk and setup network printing with fixed IP address etc)so some technical talk I proberly will understand

I do not believe it to be a cabling issue in the house there are DSL filters on every phone including sky and I am getting aroung 3.8 -4.4 Mb/Sec around 3.5 -4 Km by road to exchange ( however I dont see this as relavent as I usually always have 1 VOIP server connected )

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Uber Geek
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  Reply # 143002 4-Jul-2008 17:16
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In almost all cases it is the local setup and something is blocking the passing of SIP packets most probably the router , the fact that your router seems to go offline is also a concern. All the PAP2T's work exactly the same way so if one had a problem they all would as SIP is basically just a IP protocol and the messages are all the same with just user details being the difference.

When the device is offline if you log on to the status page what does it say ?, most likely can't contact SIP server, if you can post a screen shot I may be able to tell you more, but basically the SIP packets are getting blocked most probably by the router or could be due to the DHCP lease time on the device not be refreshed correctly so it's trying to pass to a different IP or being blocked by the device.

Also it does happen on the 2nd line as well so indications are there is a routing issue somewhere, 
  
You can setup the PAP2T with a static IP, so I would set that up first make sure you set DNS entries, then you can do some port forwarding, have your second line service use 5061 not 5060.

See how you go doing that first and we can go frpm there





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Master Geek
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  Reply # 143025 4-Jul-2008 18:48
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The other thing to check is if you are running in half-bridge mode, what we have found with some customers that have instabilty with their adsl connection, if the router disconnects and then manages to reconnect it will be assigned a new IP address, the router may not pass this address across to your VFX device, you can try this by removing the adsl line from the router, waiting for it to de-sync, then reconnecting.  Once a new IP address has been assigned to the router, check that the PAP2t also has that address.  The fix is to take the router out of half-bridge mode..

As mentioned this is for those using half-bridge mode :)




 
 
 
 


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Master Geek
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  Reply # 145799 9-Jul-2008 22:27
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Hi Josh,

I think I'm experiancing what you describe since upgrading my modem to a Dlink DSL-G604T today.  

I'm finding that when the dlink reboots (done a bit today during the configuration), sometimes the PAP2T will not reconnect without intervention (rebooting).  PAP2T says can't contact SIP server.    Pretty sure you're correct that it's when the IP changes.

I had this issue originally with my old DLink router, and manually setting the PAP2T to a fixed IP, and setting the DNS fixed it for me.   

I can't see where in the config of the router to set half bridge mode.   Any advise?

Is a fixed IP an option that WxC offers?   is there a cost for this?

Thanks,
Kerrin



122 posts

Master Geek
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  Reply # 145830 9-Jul-2008 23:34
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hey I think I may of sorted the issue but only time will tell

Have set pap2 for a fixed IP address forwarded ports 5060 and 5061 , 8060 and 8061 to the PAP2T IP adress and also set the IP adress of the PAP2T to DMZ in the router configuration which proberly offsets the other setting i mentioned about 3 days uptime now - we will see if it is fixed soon

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Master Geek
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  Reply # 145835 9-Jul-2008 23:44
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I might have fixed it by sticking the PAP2T into the static addresses list in the lan clients section of the Dlink configuration.    Guessing the router was forgetting the PAP2T was there after a reboot?

Another question:   What ports are important to the PAP2T?   I've setup 5060 and 5061 in the vertual server section, under the pap2t's IP..  Are there any others particually inbound?   I allow everything outbound for all IPs in the filter section.

Kerrin

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  Reply # 145873 10-Jul-2008 06:07
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The important ones are 5060 & 5061 as well as 8060 & 8061 for both UDP and TCP, this is because different devices can use either TCP or UDP.

Another thing to check and one of the most important is Firmware, is your Modem firmware the most current, have seen a number of issues disappear magically when firmware was updated Laughing 




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  Reply # 145874 10-Jul-2008 06:09
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numberonekiwi: hey I think I may of sorted the issue but only time will tell

Have set pap2 for a fixed IP address forwarded ports 5060 and 5061 , 8060 and 8061 to the PAP2T IP adress and also set the IP adress of the PAP2T to DMZ in the router configuration which proberly offsets the other setting i mentioned about 3 days uptime now - we will see if it is fixed soon


Keep us informed on how it goes, nice to hear you may have solved the problem.




Yes I am a employee of WxC (My Profile) ... but I do have my own opinions as well Wink

             

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162 posts

Master Geek
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  Reply # 146304 10-Jul-2008 18:53
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maverick: The important ones are 5060 & 5061 as well as 8060 & 8061 for both UDP and TCP, this is because different devices can use either TCP or UDP.


Thanks, added 8060 and 8061.

maverick:
Another thing to check and one of the most important is Firmware, is your Modem firmware the most current, have seen a number of issues disappear magically when firmware was updated Laughing 


Yip, currect firmware already loaded.

Had to save & reboot the router when I added the extra ports.   The external IP changed, and the PAP2T re-connected fine.    Cool

Thanks,
Kerrin

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  Reply # 146306 10-Jul-2008 18:56
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Good to hear, 99% of the issues are all router related, a lot of Modem / Router  suppliers havn't implemented support for SIP very well at all.




Yes I am a employee of WxC (My Profile) ... but I do have my own opinions as well Wink

             

https://www.facebook.com/wxccommunications

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