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Cisco 2921 VG ISDN with Polycom HDX Unit

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peterlyttle

Technical User
Nov 6, 2006
139
GB
Hello,

Hopefully someone here will be able to assist? We are in the process of trying to get our Cisco 2921 voice gateway configured with BRI so that our Polycom HDX unit can make ISDN calls.

We know the HDX is working as we can make ISDN calls from our current PABX (Nortel Meridian) the problem lies when switching to the 2921.

I know that clocking etc can cause issues but ive been assured that this is set correctly. Can anyone confirm the following part codes are correct for making ST/U ISDN calls via the 2921?

SM-NM-ADPTR
PVDM3-16 (with upgrade to 128 channel)
EVM-HD-8FXS/DID
EM-4BRI-NT/TE

Any help or Cisco & HDX config would be much appreciated.

Cheers,
Pete
 
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