Telular SX4D - Manual (Page 23)

Phonecell Operation - continued
Phonecell SX4D Controls
Front Panel
All controls for the Phonecell SX4D are located on the
front panel - see Figure 16. Pressing any of the front
panel controls will cause the unit to beep for approxi-
mately 100 milliseconds when the key is depressed.
Keypad
The keypad includes all digits 0 through 9 and special
characters hash (#) and star (*). All data entry and pro-
gramming activities are performed using the keypad.
Flash
The flash key is used to produce a hookflash.
See the Hookflash Function section of this manual.
Redial
The redial key redials the last dialed phone
number.
Up/Down Keys
When off-hook, the Up/Down keys control the
volume of the earpiece in the handset. The avail-
able range is ±12 dB of the nominal earpiece
output level. Each adjustment increment is 6 dB. The
volume setting persists until changed by the user, or
the volume setting is returned to nominal by resetting
the Phonecell (power Off/On).
Voicemail Retrieval
The Voicemail Retrieval key causes the
Phonecell SX4D to dial a programmable DTMF
digit string, allowing the user to retrieve voicemail mes-
sages. To program the voicemail retrieval number, see
the Programming Commands section of this manual.
NOTE: The Voicemail Retrieval feature is dependent
upon network availability.
Back Panel
AC/Battery Switch
The AC/Battery switch allows the user to switch
between external power (wall cube) and internal
(emergency) battery - see Figure 17.
NOTE: When the setting of the AC/Battery switch is
changed, the Phonecell SX4D resets itself prior to
resuming normal operation - see the Phonecell SX4D
Power Mode section of this manual.
SX4D GSM 900 • SX4D GSM 1800 22 U SER M ANUAL
IMPORTANT!
The AC/Battery switch should be left in the AC position unless the user needs
to make a call using the emergency batteries (the batteries provide a useful
call time of about 10 minutes before replacement is required).
Figure 16 – Phonecell SX4D
front panel.
Figure 17 – Phonecell SX4D
back panel.
AC/Battery
Switch