Tandberg 6000 - no incoming calls

[abandy]

Hi All -

i am new here and need help with my company's VC unit. we have had this trouble for 2 years with no solution. our tandberg is connected with a T1 that comes off our Siemens Hipath 4000 PBX (hybrid - voip and analog). The T1 is configured with 1 phone number. we are able to make both voice and video calls (at 384 kb/s) without any problems. however, when we receive a call (voice or video) we see it ringing on the vc and then it disconnects automatically. does anyone have any ideas? we are running out of possibilities. Could this problem be on the tandberg config, the pbx, or the isdn?

[robertk]

Hi All -

i am new here and need help with my company's VC unit. we have had this trouble for 2 years with no solution. our tandberg is connected with a T1 that comes off our Siemens Hipath 4000 PBX (hybrid - voip and analog). The T1 is configured with 1 phone number. we are able to make both voice and video calls (at 384 kb/s) without any problems. however, when we receive a call (voice or video) we see it ringing on the vc and then it disconnects automatically. does anyone have any ideas? we are running out of possibilities. Could this problem be on the tandberg config, the pbx, or the isdn?

Sounds like the PBX isn't using the DATA service when routing the call to your system.

Have you tried just dialing a normal voice call from a telephone to your VC? IF that works, but not a data-call (wich is what should work when you connect from another VC) you can suspect that the data service is missing.

The PBX is up to the task, since you are able to dial out, but it fails when dialing into it. My guess is that the PBX isn't configured correctly!

The TANDBERG doesn't have many options to configure, and if they are wrong it normally isn't possible to place a call even. The same with ISDN... you have to trust your provider that they know what they are doing!

//Robert

[11B-33T]

This was posted by LAJones on 06MAR08 in the ISDN forums:

We recently replaced a Polycom unit with a Tandberg 6000 MXP Codec. We have a full T1 ISDN-PRI. After the install, we were not able to receive any incoming long distance calls. It would try to connect to one channel and hang at "64kbps, please wait" and then drop the call. After lots and lots of lost hours, we finally found the solution to our problem.

We cleared the second set of numbers from the "number range" block under ISDN/External/Leased E1/T1, ISDN-PRI settings. You only enter a number in the second block if you have Cascading Tandberg Codecs, which we don't, we just have one single unit. Once we cleared that second "number range" block, we are able to receive incoming long-distance calls all the way up to the full 1472kbps

Hope this opens ups alternative options for your troubleshooting...