ASAI and Call Control

Third Party Selective Hold

The adjunct uses this capability to place a controlled call on hold at an on-ECS station. The effect is as if the specified party depressed the hold button on his or her multifunction terminal to locally place the call on hold, or flashed the switch hook on an analog terminal.

Information Flow

The adjunct expects a response to its request.

The ECS either:

Places the call on hold and sends the adjunct an acknowledgement, or

Denies the request

Third Party Selective Hold Parameters

party_id

Identifies the party to be placed on hold. This party must be

 

in the active (talking) state or already held.

ACK (Positive Acknowledgement) Parameters

No parameters are contained in the acknowledgement for this capability.

Denial (NAK) Causes

The ECS issues one of the following reasons as the cause for denying the request:

Invalid association (CS0/81) The association does not exist.

Invalid number/domain (CS0/28)

The party_id given is invalid or does not correspond to a station.

Message not compatible with call state (CS0/98)

The request is not compatible with the call state. The party to be put on hold is not currently active (talking), so it cannot be put on hold. Also applies to analog sets with two calls already on hold.

Mandatory Information Element missing (CS0/96) A required parameter is missing in this request.

Issue 7 May 1998 4-43

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Lucent Technologies 555-230-220 manual Third Party Selective Hold Parameters, Partyid