BusinessPhone Communication Platform 4.0
Commands > Commands 2000...2999

## 2642
Alternative number unobtainable tone

The alternative number unobtainable tone is used because some external units, e.g. voice mail, cannot interpret the normal tone. See command 0125 Voice mail extension?. In this case, the alternative NU tone replaces NU tone, congestion tone or inactivity tone. The tone indicates that the called party will not be represented in the exchange.

Minimum required authority level from telephone: No

Accessible via BMS: Yes

Revision: A © Ericsson Enterprise 2003