Aastra 470 - Malfunctions of Aastra DECT Cordless Phones; Malfunctions of the DECT Charging Bays

Operation and Maintenance
272
Aastra 470 ab R3.0
syd-0337/1.5 – R3.0 – 05.2013
6. 6. 2. 6 Malfunctions of Aastra DECT cordless phones
Tab. 109 Malfunctions of Aastra DECT cordless phones
6. 6. 2. 7 Malfunctions of the DECT charging bays
Tab. 110 Malfunctions of the DECT charging bay
Error description Error cause / error handling
No display. • Switch cordless phone on and test
• Replace or charge battery
No radio link to radio unit; no aerial symbol. Check coverage area (within range of a radio unit).
• Check radio units in this section
Cordless phone not logged on to system
• Log cordless phone on
Impossible to dial. Keypad blocked (keylock)
• Reactivate keypad
No dial tone. • Check radio units in this section
Poor connection quality (echo effect). • Turn down volume on the other call side (at call party)
Cordless phone beeps approx. every 10 s during a
call (or in standby) while battery indicator is flash-
ing.
• Replace battery immediately, either after or during the
call (see cordless phone user’s guide)
Call breaking up. You are moving out of range.
• Find a location with a better radio contact
A cordless phone is called from a different system
phone, but cannot be reached.
Busy tone obtained and display reads Busy
• Cordless phone is busy
Congestion tone obtained and display reads Circuit over-
load
• All radio channels busy
If congestion tone is obtained after 8 seconds and display
reads No answer. Reasons why the cordless phone could
not be reached:
• It is switched off
• It is not within reachable radio area
• No radio channels currently available
• It is not logged on to system
• Call diverted due to unobtainable
Cordless phone is not ringing. • Activate tone ringing
The cordless phone cannot be configured; PIN
missing (or forgotten).
• Reset PIN using AMS (overwrite)
Error description Error cause / error handling
The cordless phone will not charge. • Connect power supply
• Check the charging contacts
• Check battery and replace if necessary.
About the charging process:
• Battery symbol on the cordless phone is flashing
(Office 135) or filling up (Office 160, Aastra 600c/d) when
the battery is being charged.
• Check tone indicates correct contact.