AudioCodes 405HD, Administrator'S Manual, Page: 114 / 242

400HD Series IP Phones
Administrator's Manual 114 Document #: LTRT-11973
5.8.20 Enabling the Electronic Hook Switch
The phone supports the Electronic Hook Switch (EHS) DHSG feature. Calls can be answered
and volume level can be changed with EHS-capable headsets. The feature is supported on
the following headsets:

Jabra® PRO 920

Jabra® PRO 9450
The headset's base unit connects to the phone's headphone port. The Audio connector
connects to the headphone's port. The management connector connects to the Auxiliary port
using a DHSG cable which can be ordered from AudioCodes.
The feature can be enabled. The feature allows users to handle calls, i.e., answer calls and
change volume level, with EHS-capable wireless headsets at a distance from the phone.
 To enable EHS:
• Configure the EHS parameter using the table below as reference, and then click
Submit .
Table 5-51: EHS Parameter
Parameter Description
voip/services/electronic_hook_switch/enabled Enables the EHS DHSG-standard feature.

0
Disable (default)

1 Enable
DHSG (Drahtlose Hör-Sprechgarnitur) is
the protocol used to convert a wireless
headset's internal control signals to a
commonly supported standard, and which
uses the special AUX port.
Supported wireless headsets can be
connected to the AUX port (in addition to
the regular headset port). This allows the
user to connect and disconnect calls by
pressing the button on the headset.
The base unit of the headset connects to the phone's headset port, i.e., to the same port that
all headsets' base units connect to. The Audio connector must be connected to the
headphones port. The management connector must be connected to the Auxiliary port using
a DHSG-standard cable which can be ordered from AudioCodes.