Plantronics APS-11 is compatible with these Plantronics Savi Wireless Headsets:

Plantronics CS540, CS510, CS520, CS530, Savi WO100, Savi WO200, Savi WO300, Savi WO350 , Savi W740, Savi W710, Savi W720, Savi W730 , Savi W745, Voyager Legend CS, MDA200 USB, MDA220 USB

Compatible with the following phones:

Mitel 5370, 5370 IP, 5380, 5380 IP, 6735i, 6737i, 6739i, 6753i, 6755i, 6757i, 6771, 6773, 6773 IP, 6775, 6775 IP, 6865i, 6867i, 6869i, 6769i, 7434 IP and 7444 IP

Unify (Siemens) OpenScape IP 35G, OpenScape IP 55G, OpenStage 30, OpenStage 40, OpenStage 60, OpenStage 80, Optipoint 410, Optipoint 420 , Optipoint 500, Optipoint 600

Note: Does NOT supported Siemens Realitis Systems.

The APS-11 EHS cable replaces the APS-10 cable and features compatibility with the Plantronics On-line Indicator accessory.

Packaging

Dimension  (L x W x H): 17.5 x 14 x 5 (cm)

Weight: 0.17 kg

1 Year Warranty

Mitel Setup Guide: http://www.businessmachine.com.hk/userfiles/files/APS-11_Mitel.pdf

Unify(Siemens) Setup Guide: http://www.businessmachine.com.hk/userfiles/files/APS-11_Unify.pdf