OTHER USEFUL FEATURES

Common Night Service

All incoming calls to the operator are transferred to one specific extension. Answer the call in the normal way.

Individual Night Service

Selected external calls to the operator are transferred to one specific extension. Answer the call in the normal way.

Universal Night Service

All incoming calls to the operator are transferred to a universal signaling device, for example the common bell. Answer the call as described in Common Bell Group on page 94.

17.5

Emergency Mode

In the event of an emergency, the operator can set the exchange into emergency mode, during which only pre-programmed extensions are permitted to make calls. If your extension is not assigned with this cate- gory and you try to make a call, you will not receive a dial tone.

17.6

Malicious Call Tracing

If you are being disturbed by bothersome or malicious external incoming calls, it is possible to request number tracing from the network provider. Tracing can be invoked during or after an ongoing conversation. The external line can be held for a limited period of time.

17.6.1

Ordering Call Tracing

To order call tracing during an ongoing conversation, do the following:

1.Press R.

Wait for a dial tone.

2.Press *39#.

The system acknowledges with different tones whether the tracing request was accepted or rejected.

1424-EN/LZT 103 088 Uen D3 2010-11-16

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Aastra Telecom DT690 manual Emergency Mode, 17.6, Malicious Call Tracing, Ordering Call Tracing