Lucent Technologies Definity Enterprise Communications Server 555-230-220 User Manual

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ASAI and Call Control
4-4
Issue  7 May 1998 
Third Party Make Call
The adjunct uses this initiating capability to establish a call between two parties.
Information Flow
An acknowledgment (ACK) is optional for the Third Party Make Call capability. If 
requested, an ACK is sent to the adjunct when the ECS successfully originates 
the call (a call identifier has been assigned). If conditions prohibit a call from being 
established, a Negative Acknowledgment (NAK) is returned.
Starting with Release 6, if the UCID (Universal Call ID) is present, it is included in 
the acknowledgment if administered to be sent. An application that wishes to 
make use of the UCID should request an acknowledgment since the UCID is not 
included in every event report.
Third Party Make Call Parameters
orig_addr
[mandatory] The calling station’s address. For 
non-Switch-Classified calls, the request is denied unless the 
calling party is off-hook, idle, dialing, listening to dial tone, 
goes off-hook within five seconds of the request, or is forced 
off-hook by the ECS (through a speakerphone). See ‘‘Denial 
(NAK) Causes’’ 
that follows.
dest_addr
[mandatory] The called party’s address.
dest_route_
select
[optional] The trunk access code or feature access code [for 
example, Automatic Route Selection (ARS), or Automatic 
Alternate Routing (AAR)] of a called endpoint that is not 
directly connected. Alternately, this information may be 
included in the dest_addr.
return_ack
[optional] If this parameter is present, it indicates that the 
ECS should return an acknowledgement to the request. If 
this parameter is not present, then the ECS does not return 
an acknowledgement.
call_options
Call options are listed below and described in detail in the 
Third Party Make Call overview later in this section.
alert_order
ans_mach
direct_agent_call
max_ring_cycle
priority_calling
service_circuit
supervisor_assist