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DVANCED FEATURES
17.7.2 To Cancel Do Not Disturb
1) Lift the handset (special dial tone).
2) Dial #27#. Dial tone
3) Replace the handset.
17.8 Emergency State
In case of emergency, the operator is authorized to put the exchange
into an emergency state. In such a situation, the exchange properties
and rules as configured for emergency state prevail.
In emergency state, only extensions with the appropriate service profile
will be permitted to initiate calls. If you have not been assigned this
service profile and try to make a call, you will not receive a dial tone.
17.9 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 a call.
When malicious call tracing (MCT) is enabled, a signal is sent to the
switched telephone network (PSTN) before the malicious call is discon-
nected. If the calling subscriber clears the call, the external line can be
held for a limited period of time to invoke MCT.
The MCT feature registers information about the origin of the call, that is,
the number of the calling party, and date and time of the call.
Note: The MCT feature can be assign to a shortcut key by the system
administrator.
17.9.1 Ordering Malicious Call Tracing
To order MCT during a call, press the MCT shortcut key.
Note: If no shortcut has been programmed, press Hold and dial *39#.
• If the request is accepted, the shortcut key indicator is lit, a text
message is displayed, and an acceptance tone is heard.
• If the request is rejected, the shortcut key indicator flashes rapidly,
a text message is displayed, and a reject tone is heard.
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