42 Buttons Limitations on CUCM 6.1.5.10000-10

Unanswered Question
Aug 4th, 2010

We cannot utilize all the buttons on the Sidecars (7915 & 7916) to their maximum capacity due to the 42 buttons limitation on Callmanager.

We are using 7962.

IS this something that can be fixed by installing a device pack/patch?

If not, does anyone know the earliest CUCM version on which it is fixed ?

On CUCM 7.1.2, i found that it supports 54 buttons for 7962.

I have this problem too.
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rob.huffman Wed, 08/04/2010 - 08:50

Hi Kumar,

This cannot be changed by any DevPak install/upgrade

Cisco Unified IP Phone Expansion Module 7916 Button Support (SCCP)

Call-Control Release

Total Number of Buttons Supported

Cisco Unified IP Phone 7962G and 7965G Models

Cisco Unified IP Phone 7975G

Cisco Unified Communications Manager 4.2(3)SR3a, 4.3(2), 5.1(3)b, and 6.1(1)

42

42

Cisco Unified Communications Manager 7.1(3) / Cisco IP Phone Firmware 8.5(3) and later

54

56

Cisco Unified Communications Manager Express 4.3/7.0 and later

54

56

http://www.cisco.com/en/US/prod/collateral/voicesw/ps6788/phones/ps379/data_sheet_c78-468673.html

Cisco Unified IP Phone Expansion Module 7915 Button Support (SCCP)

Call-Control Release

Total Number of Buttons Supported

Cisco Unified IP Phone 7962G and 7965G Models

Cisco Unified IP Phone 7975G

Cisco Unified Communications Manager 4.2(3)SR3a, 4.3(2), 5.1(3)b, and 6.1(1), 7.0, and 7.1

42

42

Cisco Unified Communications Manager 7.1(3) / Cisco IP Phone Firmware 8.5(3) and later

54

56

Cisco Unified Communications Manager Express 4.3/7.0 and later

54

56

http://www.cisco.com/en/US/prod/collateral/voicesw/ps6788/phones/ps379/data_sheet_c78-468672.html

Cheers!

Rob

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