Figure 1-6. Electret Headset Option - Siemens 300 Series User Manual

Electret Headset Option
The Electret Headset Option (EHO) lets you plug one
or two electret headsets into the installed option and
make and answer calls using a headset instead of the
handset or the phone's built-in microphone and
speaker. This type of headset does not require require
a headset adapter, or amplifier.
Note
Carbon headsets will not function properly on the
EHO.
A selection of electret Siemens Rolm headsets is
available. See your Siemens Rolm distributor for de-
tails.
Figure 1–6. Electret Headset Option
Introduction 1–9