Troubleshooting; No Dial Tone - Siemens OpenStage 40 User Manual

Troubleshooting

If your phone does not operate as you expect, check the following points
before reporting a fault to your telephone services manager:

No dial tone

• Check that the phone is plugged in to the IP network.
• Check that the power supply is plugged in and switched on.
Phone does not ring
This may happen because:
• Your calls are diverted (you hear a special tone when you lift the
handset and the display shows the phone number to which calls are
diverted).
• Do not disturb is set (the display usually shows "DO NOT DISTURB").
See the HiPath DX online user guide for further information.
• Hot-desking has been set at another phone. See the HiPath DX online
user guide for further information.
• The ringing volume is too low.
Cannot dial an external number
This may happen because:
• You do not have the privilege.
• Your phone is locked. See the HiPath DX online user guide for further
information.
• Switch-based Congestion Control is implemented and network
congestion has occurred ("LINE IN USE" is displayed for 3 to 5 seconds
and the phone sounds three warning buzzes). You must make the call
or use the feature later.
Introduction
9