Allows basic direct connection with any of the above listed headsets and the following phones: 302D, 2410, 2420, 4406D+, 4412D+, 4424D+, 4424LD+, 4610SW, 4620SW*, 4621SW, 4622SW, 4625SW, 6416D+M, & 6424D+M *4620SW phones manufactured after 11/04 require HIC cable. Those manufactured prior to 11/04 require the HIP cable.

