Mitel 430 System Functions And Features page 236

Call routing
ISDN ISDN
A
C
Fig. 115 Enquiry call and brokering, followed by three-party conference
Prerequisites
The following requirements have to be met for three-party connections in the exchange
to be activated:
• Basic accesses in point-to-multipoint operation (DSS1 only; QSIG and analogue not
supported).
• For Italy only: Basic accesses in point-to-point operation (DSS1 only; QSIG and an-
alogue not supported).
• The supplementary services required must be available at every basic access at
which the function is to be supported (subscription may be required).
• The enquiry call connection must be set up as an outgoing call by the internal user.
It has to be routed via the same basic access as the first connection.
• Authorisations must be enabled (see "System configuration", page 236).
Response of the Communication Server if the Procedure Fails in the Exchange:
• Hold cannot be transferred to the exchange:
– The connection is put on hold in the communication server.
– Any subsequently initiated three-party services are carried out locally in the com-
munication server.
• Three-party conference / call transfer in the exchange not carried out:
The communication server cannot carry out the function locally as the call is on hold
in the exchange.
System configuration
Tab. 64 Transferring three-party connections to the exchange: Settings
Parameter
User configuration:
• Exchange access authorization
Network interface:
236
Communication
server
B
Parameter value
Activated
ISDN ISDN
A
C
System functions and features as of R4.1
syd-0570/1.2 – R4.1 – 08.2016
Communication
server
B