Aastra Ascotel IntelliGate A150 System Manual page 211

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
PBX Response if the Procedure Fails in the Exchange:
• Hold cannot be transferred to the exchange:
– The call is put on hold in the PBX.
– Any subsequently initiated three-party connections are carried out locally in
the PBX.
• Three-party conference / call transfer in the exchange not carried out:
The PBX cannot carry out the function locally as the call is on hold in the ex-
change. The function cannot be carried out.
Call routing
System Functions and Features as of I7.9
"System configuration", page 212).
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