I have an IP Telephny set up with CME running on version 9.1.We have an 8961 phone connected with 1 KEM .Actually we requied to connect 2 KEM for our recepetion and 8961 will support only 1 KEM .Thats why we purchased 9971 phone.
But when connected 9971 with 2 KEM i got an error like " Your IP Phone do not have power to provide the accessory connected ".
From the following Power information showing that 9971 requires power adapter for connnecting 3 KEMS.
But it also mentoning that with POE it will work with 1 KEM.But I tried with 1 KEM but i am getting the same error.
Also mentioning with AT power it will support 2 KEMs....what is AT power I dont have any idea about that?
Is there any solution other power adapter for connecting 2 KEMs for 9971..we are having POE cisco switch....
Thanks in advance
The Cisco Unified IP Color Key Expansion Module for the Cisco Unified IP Phone 8961, 9951, and 9971 have the following power consumption and power scheme.
48V DC, 5W per KEM
•At least one KEM can be powered up if the Cisco Unified IP Phone 8961, 9951, and 9971 uses AT PoE.
•If the phone uses a power adapter, three KEMs can be powered up for the Cisco Unified IP Phone 9971, two KEMs can be powered up for the Cisco Unified IP Phone 9951, and one KEM can be powered up for the Cisco Unified IP Phone 8961.
•A KEM cannot be powered up if the Cisco Unified IP Phone 8961, 9951, and 9971 uses AF PoE.
•With AT power, the Cisco Unified IP Phones 9951 and 9971 can support two KEMs plus a USB headset or another USB device that is independently powered and only uses USB for signaling.
•The Cisco Unified IP Phone 9971 needs a power cube to support three KEMS.
•With AF power, the Cisco Unified IP Phones 9951 and 9971 need power cubes for any KEMS. The Cisco Unified IP Phone 8961 can support one KEM with CDP, AF power, and no power cube.
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