Avaya 5621 VOIP phone dropping calls losing connection to VPN

[sbastick]

I have an IP Office 500 and have 7 VOIP 5621 phones connected in several remote areas. Periodically throught the day the phones will disconnect from the VPN. I am not sure if they are rebooting or if they are just losing the connection. The phone comes right back up. I have used a Sonicwall, a Cisco ASM, and a Firebox and all three firewalls and VPN's acted the same so I am thinking the problem is on the phone itself. I am not sure if there is a firmware update that would solve this or not. Sometimes the phone will be up for over a day without an issue and some days it might disconnect/drop the connection several times a day. I have 5 phones in our washington office and usually when one phone drops the others will drop within just a few minutes of eachother. However two phones today were up for over 21 hours and the other two rebooted several times already. (I say reboot but I am not sure what they are doing.) Has anyone else had this issue or something similar? Any help would be greatly appreciated. I have tried the usual channels by opening up tickets with our provider and so far no luck.

Don't blame me, I wanted the Cisco!

 

[amriddle01]

We usually use a cheapish VPN router on the user side, tends to work better and can be accessed remotely to

ACSS (SME)
APSS (SME)

http://www.ipoffice.tel

"I'm just off to Hartlepool to buy some exploding trousers

 

[effectivecommunicat]

amriddle01 - Are you saying you have a VPN at the remote site? I am considering a similar situation, but the remote site does not have a public IP Address, since it is a users home. Any suggestions?

I have been trying to use VPN Remote Firmware on 5621 phones and connect to a FVS336v2 following the tec tip 184 as well as an Avaya Solution & Interoperability Test Lab with Netgear (IPO-NTGR-FVX538.doc) and have followed every step and have yet to get past IKE Phase 1.

 

[tlpeter]

Then you ar enot doing it right.
The docs are very clear and do work.

Phase one means most of the time a wrong gateway ip address or wrong settings for the groupname and or PSK.


BAZINGA!

I'm not insane, my mother had me tested!

 

[mforrence]

@effectivecommunicat - you can create a VPN without static public IP by using dyndns.org or similar service. Most routers support this type of configuration. I agree with amriddle01 - it is much easier to have a router at both ends, set up a router-to-router VPN then set up IP phone using private networking schema.

In setting up router-to-router VPN, I generally configure to reduce the processing overhead on the router. Router to router VPN generally takes five minutes or less to configure.

Cheers!
Mike