Call routing
254
System functions and features as of R3.0
syd-0367/1.3 – R3.0 – 03.2013
Prerequisites
The following requirements have to be met for three-party connections in the ex-
change 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
analogue 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 255).
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
communication 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.
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