Central Operator or External Central Answer Position in a Network with ISDN or H.323C

Calls to a common operator number, originating in a sub-node which is night switched, or has no present local PBX operator, and calls which are internal in the private network, or originate outside the PTN, can be Night Service-diverted to a central operator MX-ONE. Note that SIP tie-lines do not support a specific Night-service-diversion service, but maps it to ordinary Diversion.

In addition to the internal day/night switching destinations, it is possible to initiate three different central external destination numbers, common to the entire MX-ONE.

The five possible destination numbers have the following order of priority:

• Local common operator number/local day answer position

• Central operator/private network answer position 1

• Central operator/private network answer position 2

• Central operator/private network answer position 3

• Local answer position for call origin group without any present operator

Alternatives 2 - 4 can only be used when the exchange has no present local PBX operator to serve the call.

One of the private network Night Service numbers can be used for a central answer position which is not a PBX operator number (for example extension-, group number, or voice mail equipment), but that alternative will be permanently active, and not notified. This alternative can be initiated per customer in a Customer Group. If alternative 2 is used for such a non-operator position, alternatives 3 and 4 will not be accessible.

Calls previously rerouted in a network, are not allowed to be Night Service Diverted to a private network number, that is, alternatives 2 - 4 are not available to rerouted calls.

Prerequisites

Common operator numbers must be initiated. The Night Service diversion position is reached via a common abbreviated number. The abbreviated number contains the private network number of the central operator. When expanded, the number must consist of the own exchange number of the central operator's MX-ONE, and a common operator number (number type OD and OC) in the central operator's MX-ONE.

The own exchange numbers of all exchanges in the private network must be initiated as external destinations, with command RODDI and preferably SRT (start position for digit sending) = 1.