Can the tandberg work with Call Manager express (CME)? The tandbergs are registered with a gatekeeper and I can call from the phones to the tandberg but not from the tandbergs to the phone. I have two tandbergs that can communicate using their IP address. Is there a way to give the tandbergs a 4 digit extension and allow it to communicate with the ip phones and vice versa? I would prefer to use the call manager express instead of call manager.
If your question is if a H323 audio or video endpoint can communicate to a Cisco IP phone (registered to CME) then the answer is yes, regardless of the gatekeeper (callmanager is a gatekeeper).
If your question is if Tandberg's H323 video endpoint can communicate with Cisco's video advantage or Tandberg's skinny video endpoints with video (T550, T1000, or the MXP versions of same) then the answer is no. CME only supports video from Cisco's video advantage at this time. It will work if the video device is registered with full callmanager (and working) but only if the video device advertises its video capabilities with the initial call setup message.
Your issue above may actually be a simple one. One way audio or calling is usually indicative of a mismatched setting, such as H.323 fast-start. Your gatekeeper should already handle the IP to E.164 number mapping, you will only need an h.323 dial-peer on the CME pointing toward your gatekeeper for the destination-pattern that matches the numbers on the gatekeeper/tandberg units...
I was able to use the E.164 number mapping but I now have another problem. When I call from the Tandbergs to the IP Phone and vice versa, the call is disconnected as soon as the phone or tandberg is answered. All of the equipment is in on one vlan. It's set up this way for testing purposes. Below is the basic config.
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