Multiple Remote H323 phones at a single remote site

[mforrence]

Hi all,
I have an application where a customer would like to use two 9608 phones configured as remote from the same remote site. I've been trying to make this work and have found that either of the two can work, just not both at the same time. And it makes sense that it would be a "one-phone per remote site" solution. Setting up a VPN to the site will be a hassle - it would be much easier if we could do it via the remote feature. Anyone have this successfully working?
Thanks!

 

[atcom]

No, it will not successfully work and I'm surprised it works at all for you - the router must be doing some kind of H323 NATing for you.

A VPN or VPN phones would be the answer.

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Calgary Telephone Systems, Avaya LG Asterisk (FreePBX) VOIP & TDM

 

[mforrence]

@atcom - nothing special required for single remote H323 phone on 8.0+. Forward a couple of ports at IP Office end and it works fine. It's the multiple phones at a single remote site that is the challenge. And yeah - I'm thinking that a router to router VPN will work the best.

 

[stownsend]

I'm going to guess that the Router you have there now is doing PAT (not NAT) and since you have the same source/destination ports for the same device, it cannot do the Port Address Translation on the Edge router (Cable/DSL type routers are notorious for this). Depending on that router you would only be allowed one VPN Connection of the same type as it uses Specific Ports too.

We have a PIX/ASA at the head end and have a Variety of Remote Firewall/Routers installed at Remote locations. The Cheapest is the RV220W. Its a Decent unit and talks to the ASA just fine. We have several sites with Multiple and one site with 15 5610 units behind the VPN.

Scott<-

 

[mforrence]

@stownsend - thanks. I'm sure with a site to site VPN all would be fine. However, per customer's request, we're trying to do this without a site to site VPN - instead using the NAT traversal function that comes with R8 and higher.

 

[amriddle01]

The NAT traversal method employed by Avaya sucks, end of story. Count yourself lucky 1 is working without issue


Avaya Implementation Qualified Professional Specialist Technical Engineer (AIQPSTE)

 

[Lodde]

We have had it working with 2 9620 phones as Remote Extn behind a simple dlink di524 router.

 

[oceanSD]

Same as Lodde here...we have 2 9620's at a remote site using H323 only. Did have to replace the main site router but it works beautifully...(used a NetVanta 3120).