Operation and Maintenance
6.5.2.6 Malfunctions of Mitel DECT cordless phones
Table 97: Malfunctions of Mitel DECT cordless phones
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 registered with the system
• Cordless phone registered
Impossible to dial. Keypad blocked (keylock)
• Unlock keypad
No dial tone. • Check radio units in this section
Poor connection quality (echo effect). • Turn back loudspeaker opposite (for call parties)
Cordless phone beeps approx. every 10 s
during a call (or in standby) while battery
indicator is flashing.
• 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
Release 7.1
System Manual for Mitel SMB Controller 264
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