Cisco ip phones fully support the LLDP-MED protocol.
The following Cisco phones models with firmware version 8.3(3) or later support the LLDP-MED protocol:
•7906G
•7911G
•7931G
•7941G/7941G-GE
•7942G
•7945G
•7961G/7961G-GE
•7962G
•7965G
•7970G/ 7971G-GE
•7975G "
For further details, please refer Cisco Unified IP Phones 7975G, 7965G, 7945G, 7962G and 7942G Release Notes for Firmware Release 8.3(3) (SCCP and SIP) http://www.cisco.com/en/US/docs/voice_ip_comm/cuipph/7975g/firmware/8_3_3/english/release/notes/75833.html#wp134580:
Cisco 89XX and 99XX ip phones supports LLDP-MED from firmware version 9.1(1). Please refer Cisco Unified IP Phone 8961, 9951, and 9971 (SIP) Release Notes for Firmware Release 9.1(1) http://www.cisco.com/en/US/docs/voice_ip_comm/cuipph/9971_9951_8961/firmware/9_1_1/release_notes/9900_8900_911.html#wp212098:
Cisco 6900 ip phones support LLDP-MED from firmware version 9.0(2). Please refer Cisco Unified IP Phone Release Notes for Firmware Release 9.0(2) (SCCP) 6921, 6941, and 6961 http://www.cisco.com/en/US/docs/voice_ip_comm/cuipph/6921_6941_6961/firmware/9_0_2/english/release/notes/6900_902.html#wp179039.
