11
Introduction of the Keypad
Description, Installation, and Configuration Manual
Federal Signal
www.fedsig.com
No. Interface
Description
14
DSS KEY
Short press a DSS key to select a function.
Long press a DSS key to display the settings
interface. (To long press, press and hold the
button for more than 2 seconds.)
15
Volume
Down Key
In the standby state (on-hook), press this button
to reduce the ring volume, and when on a call,
this button lowers the volume on the call.
16
Mute Key
During a call, press this key to mute the
microphone.
17
Volume Up
Key
In the standby state (on-hook), press this button
to increase the ring volume and, when on a call,
this button increases the volume on the call.
18
Side Key
Long press the side keys to enter the settings
interface to set the required functions.
