The Sennheiser Electronic Hookswitch for Siemens Phones connects any Sennheiser wireless office headset to certain Siemens phone models (see below), allowing for remote answering and ending of calls without the use of a handset lifter. Call us at 1-800-HEADSETS (1-800-432-3738) to check for compatibility with your phone.

Compatible Siemens & Unify phone models:
Open Stage 40, 60, and 80, as well as Optipoint 410 (advance, economy, entry), 420, 500, and 600

Compatible Aastra phone models:
5370, 5380, 5370, 5380, 6739i, 6771, 6773, 6775, 6773 IP, 6775 IP, 6867i