Tandberg MXP 880 Timing Issue

[mollykmi]

Hello.

We are having an issue with Tandberg 880 MXP customers connecting fine, then if you hang up and try to connect again, you can't. Nothing on the network indicates an issue. Then after a few minutes you can connect again. No explaination. Rebooting doesn't make any difference. It's like the system has to time out or something.... The customers are registered to a gatekeeper, but that doesn't show any errors or blocks. Has anyone ever seen this? The Tandbergs 880 MXP are at F3.1 NTSC. Any advice is welcome.

Thanks
Molly

[mollykmi]

We found a solution. Under Lan setting, h323 settings, the h323 call setup needs to be hard set to Gatekeeper. It appears to default to direct. Although even with it set to direct you can set set the gatekeeper to manual and enter the IP address. And it does register with the gatekeeper.

The Tandberg user manual states the following:

4.8.2.2.3 H.323 Call Setup
Direct An IP-address must be used in order to make a H.323 call. The system will not
use a gatekeeper or CallManager
Gatekeeper The system will use a gatekeeper to make a H.323 call.

So you'd think that no calls would work, but that is not true after doing traps in our GK is appears to not hangup properly and thinks it is still connected.

This is just what we found. Thanks Everyone.

[Sean Lessman]

We found a solution. Under Lan setting, h323 settings, the h323 call setup needs to be hard set to Gatekeeper. It appears to default to direct. Although even with it set to direct you can set set the gatekeeper to manual and enter the IP address. And it does register with the gatekeeper.

Not unless its a bug. Direct mode means direct dialing only (no gatekeeper), it shouldn't register to a gatekeeper when set to Direct Mode. Can you verify this is indeed happening?

What gatekeeper/software do you have? Is the GK running in direct mode or routed?

Sean

[GTC]

My understanding of any codec registration with Gatekeeper is just that, registration of the system to the GK software regardless of the call routes being direct or routed from the endpoint.
Direct would do that, route the call setup and traffic directly to the remote endpoint without the GKs intereration but the GK will still register the call and connection status.
If you do not select direct the GK should 'policy' the traffic between the endpoints as well as allow URL, E164 dialling.

Are Tandberg doing something different to other manufacturers with regards to GK registrations?


GTC

[Sean Lessman]

Are Tandberg doing something different to other manufacturers with regards to GK registrations?GTC

No, we are not doing anything different. However the term 'direct mode' in the endpoint means no gatekeeper is involved.

Sean