Plantronics APS-11 Electronic Hook Switch Cable (37818-11) New

Condition: NewPlantronics APS-11 Electronic Hook Switch Cable (37818-11)Plantronics APS-11 is compatible with these Plantronics Savi Wireless Headsets: Plantronics CS540, CS510, CS520, Plantronics Savi WO100,Plantronics Savi WO200,Plantronics Savi WO300,Plantronics Savi WO350, Plantronics Savi W740, Plantronics Savi W710, Plantronics Savi W720, Plantronics Savi W730, Plantronics Savi W745 APS-11 Electronic Hookswitch (EHS) works with the following telephone models: Aastra OpenPhone 71, OpenPhone 73, OpenPhone 75, OpenPhone 73 IP, OpenPhone 75 IP, Office 70, Office 80, Office 70IP, Office 80IPAastra 6739i,6771,6773,6775,6773 IP,6775 IP,5370, 5380,5370 IP, 5380 IPAastra 53i*, 55i*, 57i*, 57i CT*, 6753i*, 6755i*, 6757i*, 6757i CT* - *These require Part#: OpenStage 40, OpenStage 60, OpenStage 80, Optipoint 410 with acoustic adaptor, Optipoint 420 with acoustic adaptor, Optipoint 500 with acoustic adaptor, Optipoint 600 with acoustic adaptor Does NOT supported Siemens Realitis Systems.Agfe