7916 expansion module resetting

[carstenloemker]

Hello Everyone,

last week we purchased a 7965G IP phone with two expansion modules for our reception.

The phone system is new

Cisco Unified CM - System version: 11.0.1.20000-2

I configured the phone using SCCP, once the configuration was finalised I connected the phone - assembled with 2 x 7916 expansion modules -

the phone upgraded it's firmware.

FW phone: SCCP45.9-4-2SR1-1S

FW 7916 modules: B016-1-0-4-2

That from what I read in docs seems to be the right FW combination.

I then created a SCCP phone button template and all 48 expansion module buttons are set to 'Speed Dial BLF'. This phone button template is associated with the 7965G phone.

Now what happens is that when the status of one of the configured lines changes to busy and the amber light lights up on an expansion module. Both modules reload - returning to the Cisco splash screen then turn blue and load the configured extensions.

Does anyone experience a similar issue, could it be simply power supply related. The two expansion modules are connected to an external power supply.

Thanks heaps in advance for any clues to solve this mystery 

Carsten

[Manish Gogna]

Hi Carsten,

Please ensure that the power supply requirements are met as per the following

Number of Cisco Unified IP Phone Expansion Module 7916 Modules	Cisco Unified IP Phone 7962G, 7965G, and 7975G Models Power Source	Items to Order
1	In-line	1 Cisco Unified IP Phone Expansion Module 7916 1 single footstand 1 power cube 1 country cord
1	Local power (cube)*	1 Cisco Unified IP Phone Expansion Module 7916 1 single footstand
2	In-line or local**	2 Cisco Unified IP Phone Expansion Module 7916s 1 double footstand 1 power cube 1 country cord

* A single Cisco Unified IP Phone Expansion Module 7916 can receive power from a locally powered Cisco Unified IP phone.

** Local power must be connected to the first Cisco Unified IP Phone Expansion Module 7916 to supply power to both Cisco Unified IP Phone Expansion Module 7916 modules.

http://www.cisco.com/c/en/us/products/collateral/collaboration-endpoints/unified-ip-phone-expansion-module-7916/data_sheet_c78-468673.html

HTH

Manish

[carstenloemker]

Hello Manish,

thanks for your quick reply, the two 7916 expansion modules are powered by an external power supply being connected to the unit closest to the phone.

My guess is that it just could be the power supply, as the symptom is related to one or more LEDs flashing up when a line is picked up.

Thanks Carsten

[Manish Gogna]

That looks to be the case here since firmware is fine.

Manish

[Alexandru Razvan]

Hello,

we are facing somehow same behavior but after the upgrade of the system from 10.5 to 11.0.

The problem is that the Cisco phones 7965 with 2 7916 modules but without extension mobility are working OK. After login the modules are restarting in a loop.

The problem is on the extension mobility side. The "device profile" for the 7965 phones does not contain any more the "expansion module information" settings.

The settings are still available on the phone but not on the profile.

In the attach is the device profile for 7965 from version 10.5 and from 11.0.

What do you think that can be done?

Thank you.

Razvan Alexandru

[Garrett Hensley]

Did you find a solution to this problem? I am having a similar issue. I just replaced a 7965 due to a screen issue and the expansion module randomly resets now. I didn't get any reports of this issue with the old 7965. Did you replace the power supply and that fixed the issue?

Thanks,

Garrett Hensley