The Plantronics APS-11 Electronic Hookswitch (EHS) cable for Aastra/Siemens (Savi & CS500 series) - This special cable communicates electronically with your compatible phone in order to eliminate the need for an HL10 lifter.

Only compatible with these Plantronics Savi and CS500 models:

• Plantronics CS540, CS510, CS520
• Plantronics Savi WO100, WO200, WO300 & WO350
• Plantronics Savi W740, W710, W720, W730, W745

 This EHS Cable will ONLY work with the following phone models:

• Aastra OpenPhone 71, OpenPhone 73, OpenPhone 75, OpenPhone 73 IP, OpenPhone 75 IP, Office 70, Office 80, Office 70IP, Office 80IP
• Aastra 6739i, 6771, 6773, 6775, 6773 IP, 6775 IP, 5370, 5380, 5370 IP, 5380 IP
• Aastra 53i*, 55i*, 57i*, 57i CT*, 6753i*, 6755i*, 6757i*, 6757i CT* -  *These require Part#: D0062-0011-34-00 DHSG CABLE KIT.
• Siemens 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
• Agfeo ST30 (HS-Module 30 required), ST31, ST40
• Auserwald COMfortel 2500
• Funkwerk CS290-U, CS410, CS410-U, IP-S400
• Swyx L420s, L440, L520s, L540
• T-Com Comfort Pro 100, Comfort Pro 300, Comfort Pro 300 IP, Comfort Pro 500, Comfort Pro 500 IP, F20, F30, F40, F50, F640, F660, F680, F31IP, L420s, F41 IP, L440

*DOES NOT support the Siemens Realitis Systems.

Please Note: This APS-11 EHS module requires an initial “wake up” by pressing the headset button on the phone. This is a one time “wake up” unless the product is disconnected