3
Troubleshooting
Specifications
Symptom Possible Causes Corrective Action
Handset display is black. Handset is in power saving
mode.
Press any key
Battery is drained. Put handset in charger and
recharge battery.
Power outlet that the adapt-
er is connected to is turned
off.
Ensure power cord is con-
nected properly and that
power outlet is supplying
power.
Handset does not charge Power outlet that charger
adapter is connected to is
turned off or not supplying
power
Ensure power cord is con-
nected properly and that
power outlet is supplying
power.
Handset batteries are in-
stalled incorrectly
Check batteries. Ensure
that they are oriented cor-
rectly.
Handset registration failed,
and the status indicator on
the display is black.
Handset is out of range of
the base station.
Move handset closer to the
base station, turn off the
handset, place the handset
in the charger, and then turn
it on again. Reset the base
station and place the hand-
set in the charger.
Handset display shows,
“Searching for Gateway”.
Handset is out of range of
the base station.
Move the handset closer to
the base station.
Base station is not powered Plug the base station into a
continuous power outlet.
The POWER indicator on
the base station is off.
Base station is not powered. Check that the base station
power cord is connected
properly, and that the adapt-
er is plugged into a continu-
ous power outlet.
The indicator on the base
station is flashing yellow.
Ethernet cable is not con-
nected.
Check that the Ethernet ca-
ble between the WAN port
on the base station and the
LAN port on your router is
connected properly
Router is not turned on. Turn on power to router
Base station cannot retrieve
an IP address
In Internet Settings, check
that the IP mode corre-
sponds to the IP mode of
your Internet connection.
You cannot make calls, the
VoIP indicator on the base
station is not lit, and
the right status indicator in
the upper left corner of the
display is black.
Configuration of the handset
is not complete.
Check that you have config-
ured your handset properly.
Base station has not been
reset after you saved the
configuration.
Reset the base station and
allow the base station two
minutes to log in with the
communications platform.
Router or modem has not
assigned an IP address to
the handset.
Check that your router or
modem is working properly.
Check the IP address by
pressing the volume up key
on the handset while in Idle
mode.
You cannot make calls, the
VoIP indicator on the base
station is not lit, and
the right status indicator in
the upper left corner of the
display is black.
Router is blocking Internet
telephony.
a) Try disabling STUN.
Open the Internet settings
menu, choose STUN mode,
and select Disabled. Reset
the base station. For more
information, see the Router
user manual.
b) Use port forwarding. The
default SIP port is 5060, and
the default RTP port is
5004. If you use port for-
warding, you must use static
IP mode. For more informa-
tion, check your router’s
user manual.
Router firmware needs to
update.
Check your router’s user
manual to see how to up-
date the firmware
You cannot make calls, but
handset worked previously.
Base station is not logged
into the communications
platform.
Check that all cables are
connected properly, and
check that power is turned
on, and then reset the base
station.
Router is turned off. Turn on the router.
The router is using port for-
warding, but the handset
has dynamic IP mode en-
abled.
Change to static IP mode.
For more information, see
the user manual. Note that
the configured static IP ad-
dress must agree with the
configured port forwarding.
Specification Value
Temperature
High Temperature Storage + 16°C±2°, 96 hours, Relative humidity 95%
Low Temperature Storage - 20°C±3°, 96 hours
High Temperature Operation + 40°C, 8 hours, Relative humidity 95%
Low Temperature Operation 0°C, 8 hours
RFP 12 Single Cell Base Station
Power Supply Adapter Input:100-240 VAC 50-60 Hz
Output Nom: 5 VDC 1000 mA
One end with DC pin, other end with appropriate volt-
age connector plug
Mitel 112 DECT Handset
Batteries Two rechargeable batteries 600 mAh 1.2V
Mitel PN 51303917
Battery Life Talk time greater than 12 hours; standby minimum of
200 hours
Desktop Charging Cradle
Power (AC/DC) Input 100-240 VAC 50-60Hz
Output Nom: 5 VDC 1 A
One wired into charging cradle, other end with appropri-
ate voltage connector plug
Charging time Empty batteries recharged in less than 6 hours
Symptom Possible Causes Corrective Action
