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berrys

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#64042 6-Jul-2010 20:26
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Please advise if this is in the wrong forum.

When using skype for calling and video it disconnects/hangsup at around 7mins everytime. I'm thinking its a problem with my network setup which I have pretty much just plugged in and everything works except for this. I am not very tech saavy, so please bear with me.

Setup:

Dlink modem (telecom) -> Linksys SPA 2102 -> Dlink router (DGL 4500) -> Netgear switch -> PC using skype. Everything is connected by cable.

So as you can see I have a voip ata device which I think may be causing the problem, but I don't know how to set it up (or any of the other devices) correctly to allow skype to work over 7mins.

Would anyone be able to help me please...?

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sbiddle
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  #348547 6-Jul-2010 20:46
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Is there a reason why you have the SPA2102 sitting in between your modem and router?

Ideally your connection should go from the modem to the router and the ATA should be connected on a local IP behind your router. The 2102's have horrible routing performance and assuming you are using it as a router you'll be limiting your connection to around 7Mbps as this is the maximum throughput these can sustain.

 
 
 

You will find anything you want at MightyApe (affiliate link).
berrys

225 posts

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  #348550 6-Jul-2010 20:52
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Must have read to install it that way from somewhere. Ok, so will put it behind the dlink router. So do I assign it a static IP from the router?

Thanks for responding so quick. I'll try it soon.

berrys

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  #349665 9-Jul-2010 21:14
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OK, moved the ata behind the router - the phone won't dial any number. I checked my account with 2talk and its showing the number is offline...




berrys

225 posts

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  #349671 9-Jul-2010 21:32
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Went into the 2101 settings and changed from static ip to dynamic - works now. will report how it goes over the next few days.

berrys

225 posts

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  #350137 12-Jul-2010 10:24
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Hmm, not working. Can't make or receive calls. Can anyone help with router settings - its a Dlink gamer lounge 4500..?

berrys

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  #350319 12-Jul-2010 16:24
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Pulled most of may hair out... gone back to the original setup of:

modem->ata->router

Skype will have to suffer untill I get time to figure it out or get new gear. Early google searches show that the previous router model (4300) wouldn't allow an ata behind it, so maybe the 4500 is the same...?

Does anyone have suggestions for new hardware as my modem and router are a bit dated and I'd be willing to upgrade to get this working?

My only real requirement is a gigabit router, so if anyone knows of a combo that will allow a spa2102 connected behind it please suggest!

sbiddle
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  #350419 12-Jul-2010 21:25
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I've never come across a router where an ATA won't work behind it. I've come across routers that are unsuitable for VoIP (will lock up with excessive RTP voice traffic) but what you're experincing certainly sounds like a configuration issue.

Are you now double NATing stuff - ie using both the SPA2102 and Netgear as routers or are you only using the SPA2102 as a router?



berrys

225 posts

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  #350438 12-Jul-2010 22:11
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eeep. This is where I'm a real novice...

I'm back to my orignal setup - modem to spa2101 to dgl 4500 router to computers. Plug it together and it seems to work without much tinkering.

Double NATing...? I guess so, in the spa LAN settings I see it selected instead of bridge and auto. As for the router, I'm not sure where to look to see if it is setup as NAT.


sbiddle
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  #350476 13-Jul-2010 06:47
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berrys: eeep. This is where I'm a real novice...

I'm back to my orignal setup - modem to spa2101 to dgl 4500 router to computers. Plug it together and it seems to work without much tinkering.

Double NATing...? I guess so, in the spa LAN settings I see it selected instead of bridge and auto. As for the router, I'm not sure where to look to see if it is setup as NAT.



In which case you are double NATing - your 2102 is acting as a NAT router allocating a 192.168.1.x and presumably your Netgear is also acting as a router with DHCP to obtain a local 192.168.1.x address from the SPA2102 and then acting as a NAT router allocating it's own internal IP ranges, on the 192.168.0.x range (from memory).

Double NATing is bad and is probably the root cause of your issues.

You are also limiting your ADSL performance to around 6Mbps due to the poor routing performance of the SPA2102.

berrys

225 posts

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  #350520 13-Jul-2010 09:23
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Ok, I see. My modem is on the standard 10.1.1.1. It assigned the spa2102 an address of 10.1.1.x. I can't see it having a 192.168.1.x address anywhere...?

My Dlink router has an address of 192.168.1.x and I have all my other stuff connected to it, with allocated/static IPs.

When I put the spa2102 behind the dlink router, the router gave the spa2102 an IP address in the 192.168.1.x range. The log of the Dlink router kept saying it was blocking outside ip addresses from 'contacting' the spa2102 - I assuming it was trying to register...? Anyways, the log listed the spa2102 as 10.1.1.x instead of the ip of 192.168.1.x. I tried putting the allocated ip of the spa2102 into the Dlinks DMZ, but it didn't work.

sbiddle
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  #350538 13-Jul-2010 10:31
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Sounds like you have triple NATing occuring with the modem, spa2102 and router all allocating IP's. This is undoubtably what is causing all your grief.

If you are running a router behind your modem the modem should be in bridge mode. Not all modems support this

berrys

225 posts

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  #350542 13-Jul-2010 10:38
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Ahhh, will look up to see if the modem can be put in bridge mode - its a Dlink DSL-502T - standard telecom modem. Will report back.

Thanks for all your help so far - much appreciated!

berrys

225 posts

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  #350553 13-Jul-2010 10:49
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ok, modem has NAT listed under the WAN section and is enabled. Only option available to to disable - so I don't know if doing that would then put it in Bridge mode.

Firewall option here too which is enabled... should the modem or router or both be used for the firewall?

webwat
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  #352876 18-Jul-2010 01:49
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berrys: Pulled most of may hair out... gone back to the original setup of:

modem->ata->router

Skype will have to suffer untill I get time to figure it out or get new gear. Early google searches show that the previous router model (4300) wouldn't allow an ata behind it, so maybe the 4500 is the same...?

Does anyone have suggestions for new hardware as my modem and router are a bit dated and I'd be willing to upgrade to get this working?

My only real requirement is a gigabit router, so if anyone knows of a combo that will allow a spa2102 connected behind it please suggest!


I think the solution is to get a wig that replaces all the hair you pulled out.

Maybe theres a reason for you daisychain a switch behind two routers and an ATA... Why not plug the switch directly into the modem, and then plug both the ATA and 4500 into the switch? Your 4500 may be allocating different IP addresses and causing double NAT problems.




Time to find a new industry!


berrys

225 posts

Master Geek


  #352983 18-Jul-2010 14:58
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Ha - I'm not that far off a wig generally, but I'll give the combover a go first to annoy the wife!

My reason for a modem to ata to router to switch... just my madness... Well actually its just way way things happened/purchased while I setup my little business and it worked at the time so didn't tinker with it. Got broadband, so had the modem to the pc. Then needed more harddrive space, wireless and a couple of slave pcs, so got a wireless router. Then got more slave pcs, so got a switch. Then needed another landline number so went the voip route and an ata. Read (probably the ata manual) that I needed to put the ata directly behind the modem than then connect to the router to work - and it did till i tried skype...

Solution soounds a good and logical one, I'll give it a go in a couple of weeks when work has got a bit quieter.

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