EPOS | Sennheiser Grandstream/Avaya Adapter Cable For EHD, Suits Avaya 9608, 9611, 9621, 9641, Suits Grandstream GRP2615, 261, Suits Fanvil T03EPOS Sennheiser Grandstream Avaya Adapter Cable For EHD, Suits Avaya 9608, 9611, 9621, 9641, Suits Grandstream GRP2615, 261, Suits Fanvil T03 Avaya adapter cable for electronic hook switch suitable for; Avaya 14xx series, Avaya 94xx series, Avaya 95xx series and Avaya 961 IP series. Suitable for DW Office, DW Office ML, DW Office Phone, DW Pro 1, DW Pro 1 ML, DW Pro 1 Phone, DW Pro 2, DW Pro 2 ML, DW Pro 2 Phone, SD Office, SD Office ML, SD Pro 1, SD