Cisco Systems, IP Series Phone, 7900, 7902, CP-7902G, 7902G-GE, 7905, CP-7905G, 7905G-GE, 7906, CP-7906G,
7906G-GE, 7910, CP-7910G, 7910G-GE, 7911, CP-7911G, 7911G-GE, 7912, CP-7912G,
7912G-GE, 7940, CP-7940G, 7940G-GE, 7941, CP-7941G, 7941G-GE, 7942, CP-7942G,
7942G-GE, 7945, CP-7945G, 7945G-GE, 7960, CP-7960G, 7960G-GE, 7961, 7961G,
7961G-GE, 7962, 7962G, 7962G-GE, 7965, 7965G, 7965G-GE, 7970, 7970G,
7970G-GE, 7971, 7971G, 7971G-GE, 7914, CP-7914G, 7914G-GE, 7936, CP-7936G,
7936G-GE, 7975, CP-7975G, 7975G-GE, Charcoal, Gray,
Grey, Black, Handset, Receiver, Phone Headset, Telephone Handle
Handset does not work on the 7931