H3C XE 200/2000 IP, Operation Manual

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Operation Manual – Call Services
H3C XE 200/2000 IP PBX
Chapter 17
Call Intervention Service
17-1
Chapter 17 Call Intervention Service
17.1 Overview
17.1.1 Introduction to Call Intervention Service
Using the call intervention service, a subscriber can forcibly make a call by dialing the
access code and a called number, no matter whether the callee is idle or in
conversation. If the callee is in conversation, the intervening subscriber can choose to
restore or terminate the original call connection before ending the call.
The access code of the call intervention service is *89*.
To use the call intervention service:
z
MS should be enabled on the XE IP PBX first. Otherwise, the call intervention will
fail, and the ongoing call will proceed normally.
z
Out-band dialing support is required.
The call intervention service does not support the following:
z
Subscriber management service (for the callee)
z
Inter-group call restriction service
z
Outgoing call authority control service
z
Call forwarding services except CFO (for the callee)
z
DND service (for the callee)
Caution:
z
Use the call intervention service with caution. It is recommended for specific
subscribers only.
z
The call intervention service does not support nesting. That is, the call intervention
service is no longer applicable to a call which itself is established by using the call
intervention service.
17.1.2 Using Call Intervention Service
The call intervention service must be enabled before a subscriber can use it. Refer to
Call Intervention Service Configuration for operation details.