Reference Guide
1. Display
2. Lower Key
3. Upper Key
4. Hand Strap
5. Charger Unit
6. On cradle LED
Display
Top row icons:
A constant receiving power symbol
shows good reception and transmission
power of radio signal.
Message Showing Indicator.
It shows the phone is in off-hook mode.
Flashes while connecting and receiving
calls
Phone book review mode. It shows
when Phone Book records are being
viewed.
Displayed when the ringer volume is set
to OFF
Battery charge more than 95%
Battery charge between 50% and 95%
Battery charge between 20% and 50%
Below 20%. A warning tone is played –
the battery capacity is low and the
handset needs charging.
Turning the phone on and off
GETTING STARTED
On:
• Place the M155 on charger cradle or;
• Press the upper key.
Off: Select “Power off” from the menu.
The M155 is configured by sending special message strings to it. This allows configuring the
phone book , specify messages, change language or reset the product to factory settings.
Sending these special messages can be done from another messaging enabled DECT
handset or a Messenger application connected to the system.
In idle an SOS call is initiated by pressing and holding one of the two keys for 2 seconds.
If no SOS message has been defined a call to the first number (SOS number) in the phone
book list is set up. If a message has been defined the predefined SOS message will be sent
to the SOS number.
Select from the menu the (predefined) number (0 - 4) to which a call is to be set up. Press
the lower key to set up the call.
Press either the upper or the lower key to answer a call.
Press either the upper or the lower key to end a call.
Press and hold both the lower key for 2 seconds.
Select from the menu the (predefined) message that is to be sent. Press the lower key to
sent the message to the with the message defined number.
An incoming message is shown at the display.
When the message is too long to be displayed completely use the upper key to scroll
through the message.
Press the lower key for 2 seconds to acknowledge the message and to clear the display.
When the message contains a call back number then press the lower key to set up a
(voice) call to this number.
DECT Messenger – Quick Reference Guide
HOW TO WEAR?
The handset unit can be worn as a watch (A) or pendant (B) as indicating in below pictures.
The best position to use the phone for conversation is to keep 20cm distance between the
user and the handset. This is to ensure that the loudspeaker will not cause any harm to
your ears.
MENU FUNCTIONS
Press both keys at the same time to enter menu. Upper key will be used to toggle the
menu. Lower key will be used to select an item.
DECT Messenger – Reference Guide