ASCOM Ascotel 2025, System Manual

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ascom Ascotel 2025/2045/2065
2.184 Call Routing HBT_20321104_02/B0_en
5.5.3 Three-Party Connections in the Exchange
A locally implemented three-party connection with two external subscribers takes
up two B channels.
In point-to-multipoint operation the system can be configured so that the node
of such a three-party connection is transferred from the PBX to the public net-
work, thereby freeing up at least one B channel and PBX resources. To do so the
system accesses the supplementary services of the network provider.
The subscribers themselves are not aware of this process.
The following PBX features can be transferred to the exchange:
Tab. 2.60: Supplementary services take charge of features transferred to the exchange
Fig. 2.90: External connection followed by hold and enquiry calls
PBX feature Supplementary service Feature description
Hold Hold see Page 2.324
Enquiry call Enquiry call see Page 2.324
Brokering Brokering see Page 2.328
Call transfer (with or without prior notice) Explicit call transfer see Page 2.335
Rappel
(only after call transfer with prior notice) Recall see Page 2.374
Three-party conference Three-party conference see Page 2.330
ISDN
ISDN
A
B
PBX
haz1217aaena0
ISDN
ISDN
A
C
B
PBX
haz1218aaena0