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Loss of VoIP registration

hobjohns
Dabbler
Posts: 22
Registered: 30-07-2007

Loss of VoIP registration

I've used a Grandstream ATA386 for several years, with two VoIP lines, one PlusNet and one Sipgate, and this was reasonably stable, occasionally losing registration. When this happened, all I had to do was power down the ATA for a few minutes and everything would be fine. A few weeks ago, registration started being lost every few minutes. I checked that the setup was as recommended, and eventually came to the conclusion that the device was becoming faulty, so I purchased a Linksys PAP2T-UK.
I've configured that using the PlusNet and Sipgate recommended settings, and whilst it's more stable than the Grandstream, I'm still losing registration quite frequently - the longest I've achieved without interruption is about 14 hours. When registration has been lost, and the line leds aren't illuminated, the web browser interface says 'cannot connect to login server' for each line. If I power down the PAP2T for a few minutes everything is fine until the next time - the device has never recovered by itself.
Can anyone suggest what the problem might be?
7 REPLIES
Community Veteran
Posts: 6,249
Thanks: 428
Fixes: 39
Registered: 30-07-2007

Re: Loss of VoIP registration

Is the PAP losing registration because of a broadband disconnection and then not reregistering properly when the broadband comes back ?
hobjohns
Dabbler
Posts: 22
Registered: 30-07-2007

Re: Loss of VoIP registration

Thanks for the suggestion. My router reports no broadband interruptions.
Community Veteran
Posts: 6,249
Thanks: 428
Fixes: 39
Registered: 30-07-2007

Re: Loss of VoIP registration

In that case we might have to wait for Puddy to come along, he's got a PAP2 and might have some more ideas.
Edit: you're not the only person out there with the problem , try googling 'pap2 losing registration', there are quire a few threads, not sure any of them have a definitive answer...
puddy
Grafter
Posts: 1,571
Registered: 10-06-2007

Re: Loss of VoIP registration

Quote from: MisterW
In that case we might have to wait for Puddy to come along, he's got a PAP2 and might have some more ideas.

A lot of people lose connection and have problems using sipgate i just wonder if you will lose connection by taking out sipgate and just use plusnet voip.  I have listed the pap2 settings apart from that i cannot help i sold my pap2 a long time ago!
If you have access to a replacement router see how long it will stay registered just to rule out your router being the problem
kind regards
puddy
                                                                  UK Settings for Linksys PAP2 Device

Line Enable:  yes
sip port :5060 try 5062 for line 2
proxy :sip.plus.net                  Register: Yes
Make Call Without Reg: No      Register Expires: 3600
Ans Call Without Reg  :  No
Display Name: sip  id number    User ID: sip id number
Password: sip password          Use Auth ID: Yes
Auth ID: sip id number
Audio Configuration
Preferred Codec:G7LLu            Silence Supp Enable: no
Use Pref Codec Only:No          FAX CED Detect Enable:No
DTMF Tx Method: INFO
Line 1  Advance Settings
Proxy and Registration 
Outbound Proxy:natproxy.plus.net:5082
and put a tick in the outbound proxy  box
save settings
United Kingdom Regional Settings
Dial tone: 350@-19,440@-22;10(*/0/1+2)
Ring back: 400@-20,450@-20;*(.4/.2/1+2,.4/2/1+2)
Busy tone: 400@-20;10(.375/.375/1)
Reorder tone: 400@-20;10(*/0/1)
SIT 1 tone: 950@-16,1400@-16,1800@-16;20(.330/0/1,.330/0/2,.330/0/3,0/1/0)
MWI dial tone: 350@-19,440@-22;10(.75/.75/1+2)
CWT1 cadence: 30(.1/2)
CWT2 cadence: 30(.25/.25,.25/.25,.25/5)
CWT frequency: 400@-10
Ring 1 cadence: 60(.4/.2,.4/2)
Ring 2 cadence (BT Call Sign): 60(1/2)
Ring 3 cadence (BT Ring Back): 60(.25/.25,.25/.25,.25/1.75)
Ring 4 cadence: 60(.4/ .8)
Ring 5 cadence: 60(2/4)
Time Zone: GMT
FXS Port Impedance: 370+620||310nF
Caller ID Method: ETSI FSK With PR(UK)
Daylight Saving Rule: start=3/-1/7/2:0:0;end=10/-1/7/2:0:0;save=1:0:
UK dial plan
this will change problems when dialing number
( *x. | **x. | 0xxx xxx xxx. | 186 xxx xxxx | [1-8]xx | [1-8]xxx | [1-9]xx xxxx | 00 xxxxx x. | 141 0 x. | 1470 0 x. )
hobjohns
Dabbler
Posts: 22
Registered: 30-07-2007

Re: Loss of VoIP registration

Many thanks for all the help and suggestions. Googling 'pap2 losing registration' as suggested prompted me to try assigning a static IP address to the PAP2T and specifying DNS addresses. This appears to have done the trick, as the device has not lost registration for over two days now - much longer than the best previously achieved. For good measure, I've put the PAP2T's address in my router's DMZ.
Fingers are still crossed, but I think the problem's solved.
Community Veteran
Posts: 6,249
Thanks: 428
Fixes: 39
Registered: 30-07-2007

Re: Loss of VoIP registration

Quote
assigning a static IP address to the PAP2T and specifying DNS addresses

Interesting... I wonder if the problem is actually in the router since your previous ATA also started having problems.
Sound like the DHCP server in the router might be the cause.
hobjohns
Dabbler
Posts: 22
Registered: 30-07-2007

Re: Loss of VoIP registration

Yes, I agree - interesting. However, my Grandstream ATA386 had a static IP address, and I've several other devices which use dynamic addressing from my DrayTek 2820n quite happily, including a netbook, media streamer and Android phone.