Three-Party Connections In The Exchange - ASCOM Ascotel 2025 System Manual

ascom Ascotel 2025/2045/2065
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
PBX feature
Hold
Enquiry call
Brokering
Call transfer (with or without prior notice)
Rappel
(only after call transfer with prior notice)
Three-party conference
ISDN
ISDN
A
Fig. 2.90: External connection followed by hold and enquiry calls
2.184 Call Routing
PBX
B
haz1217aaena0
Supplementary service
Hold
Enquiry call
Brokering
Explicit call transfer
Recall
Three-party conference
ISDN
ISDN
A
C
HBT_20321104_02/B0_en
Feature description
see Page 2.324
see Page 2.324
see Page 2.328
see Page 2.335
see Page 2.374
see Page 2.330
PBX
B
haz1218aaena0