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H.323 calls between CUCM and gateway 3825 stopped work after CUCM upgrade from 4.1 to 7.1(5).

Hello,

Our voice network consists of CUCM cluster, gateway 3825 and Audiocodes:

CUCM: 7.1.5.34900-7

C3825: c3825-advipservicesk9-mz.124-24.T4

Audiocodes version ID: 4.80A.038.001

Audiocodes and CUCM connected by H.323.

C3825 connected to PSTN provider by H.323.

At first CUCM and C3825 were connected by H.323. When CCM was Release 4.1, calls from Audiocodes to PSTN worked fine in both sides.

After CUCM upgrade to 7.1.5 calls stopped work. CUCM send “Release complete 0x5a” to C3825.

When H.323 between CUCM and C3825 changed to SIP, calls became work again. But in this case fax did not work.

So, I want to do all connections by H.323.

Please help decide a problem with H.323 after CUCM upgrade.

Regards, Eugenia.

  • IP Telephony
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