ERWT - Expensive Route Warning Tone

General

The ERWT feature provides a warning tone to the user when the system has selected an expensive route for the outgoing call.

When the user has dialed a complete external number and the system has chosen a route that is marked expensive, the user receives a warning tone. The expensive route is seized and all digits except the last one are sent to co-operating exchange.

At reception of the warning tone the user can either terminate the call or wait for the time out of the warning tone. On time out, the system will continue to process the call by sending out the last digit.

Digits which are dialed during the tone sending (ERWT) are ignored by the system.

Prerequisites

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Execution

See ENT - External Number Table, NLT - Number Length Table, and DNT - Destination Number Table.