AASTRA 600d for Aastra 800 and OpenCom 100 User Guide EN - Manual (Page 52)

Basic Functions
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When you activate this feature via > Audio > Loud environment, the mobile unit
will attempt to improve voice quality in a loud environment. This applies to connec-
tions via the mobile unit itself as well as on a corded headset (not to Bluetooth
headsets nor to handsfree mode).
Special Functions
Emergency Call Key (SOS)
All devices offer the option of saving an SOS emergency call function to one of the
programmable keys (see page 137). After a short key press of the programmed key
(emergency call key), an SOS emergency call number is dialled. Whether the call can
be made while idle or also in the call state depends on the device, the type of pro-
grammed key and the system where the mobile unit is currently checked in.
If you have programmed the SOS emergency call function to the left or middle
softkey, the emergency call key is only available when idle. If you program the emer-
gency call function to one of the other keys (left or right navigation key or side keys /
hotkey on the Aastra 620d, 630d), then the emergency call key can also be used when
in the connection state (depending on the system).
On the Aastra 610d / Aastra 620d the mobile unit is always switched into the
handsfree operation when the emergency call number is dialled. On the Aastra 630d
you can configure whether the call is made in the handsfree or receiver operation (see
the Handsfree at alarm menu entry under Alarm Sensor on page 133).
The Aastra 630d mobile unit has a separate SOS key on the top edge. You can con-
figure what the key does in the menu
> Security > SOS call > SOS key or in the
menu > Settings > Key programming > [and pressing the SOS key]. The fol-
lowing can be configured: SOS call (then the SOS emergency call number is dialled
directly) or SOS call: with confirmation (the SOS emergency call number is dialled
only after a confirmation prompt). After pressing and holding the key, the SOS emer-
gency call number is always dialled immediately.
You can enter the SOS emergency call number in the menu > Security > SOS
call > SOS number. If the SOS emergency call number is predefined by the system,
this menu entry does not appear.
OpenCom 100 / Aastra 800 systems only: Always save the SOS emergency call
number with the prefixed R-key function (enquiry/hold). Then an emergency call can
also be made during a call (depending on mobile unit – see above). Press the
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