42 Buttons Limitations on CUCM 6.1.5.10000-10

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Aug 4th, 2010
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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.

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Jonathan Schulenberg Wed, 08/04/2010 - 08:49
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Based on the release notes it appears that it was a limitation on SCCP through version 7.0(2a): http://www.cisco.com/en/US/partner/docs/voice_ip_comm/cucm/rel_notes/7_0_2/cucm-rel_notes-702a.html#wp581689


Starting in 7.1(2) this statement is absent from the release notes which suggests that the SCCP protocol was updated to support the 56 buttons possible.

Rob Huffman Wed, 08/04/2010 - 08:50
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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

Rob Huffman Wed, 08/04/2010 - 09:20
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Hi Kumar,


You are most welcome my friend


Cheers!

Rob

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