ASCOM Ascotel 2025 System Manual page 353

ascom Ascotel 2025/2045/2065
Non-End-to-End ISDN Connection
With non-end-to-end ISDN connections the amount of time between the comple-
tion of the call and the release depends on who set up the connection:
• If the PBX subscriber set up the connection (i.e. from the PBX's viewpoint an
outgoing call), and the external partner hangs up, the release will be sent
immediately (in Fig. 2.85 this corresponds to the connection PBX – Subscriber
C).
• If one of the external partners set up the connection (i.e. from the PBX's view-
point an incoming call), and the external partner hangs up it can take up to sev-
eral minutes for the release signal to be sent (in Fig. 2.85 this corresponds to the
connection Subscriber A – PBX).
Note:
If two announcement services such as sports and weather information
are connected with each other, this exchange-to-exchange connection
will not be cleared down automatically. This can lead to high call
charges.
Each exchange-to-exchange connection will be cleared down by the PBX after
two hours.
An exchange-to-exchange connection will only be authorized or will only be
maintained if immediate release is guaranteed at least on one participating con-
nection.
2.176 Call Routing HBT_20321104_02/B0_en