Lucent Technologies 555-230-220 manual Multifunction Station Operation

ASAI and Domain Control

■Invalid number/domain (CS0/28)

The call_id contained in the request is invalid.

■Mandatory Information Element missing (CS0/96) A mandatory parameter is missing from the request.

Protocol Error (NAK) Cause

The ECS issues the following cause for a protocol processing error:

■Protocol error (CS0/111)

The Q.932 protocol has been violated or the capability invoked is not consistent with this association. For example, invoking a Third Party Domain Control Request over a Call Control association is inconsistent.

NOTE:

For more information regarding protocol errors and a complete list of reason codes (cause values), see the DEFINITY Enterprise Communications Server CallVisor ASAI Protocol Reference, 555-230-221.

Considerations

The Third Party Answer capability can be used to answer a call present at any station type (for example, analog, DCP, hybrid, and BRI), as long as the station is domain-controlled. A call that is already connected when the Third Party Answer request is made results in a positive acknowledgement (ACK).

Multifunction Station Operation

For a multifunction station user, this capability is successful in the following cases:

■The user is being alerted on-hook and can either be forced off-hook or is manually taken off-hook within five seconds of the request (the ECS selects the ringing call appearance).

■The user is off-hook idle; the ECS selects the alerting call appearance and answers the call.

■The user is off-hook listening to dial tone; the ECS drops the dial tone call appearance and answers the alerting call on the alerting call appearance.

A held call is answered on the held call appearance, providing the user is not busy on another call.

A bridged call is answered on the bridged call appearance, providing the user is not busy on another call, or the exclusion feature is not active for the call.

An Automatic Callback (ACB), PCOL, or TEG call is answered on a free call appearance, providing the user is not busy on another call.

Issue 7 May 1998 5-11