Ascotel IntelliGate 2025/2045/2065
324 Call Routing Part 2
to-end within the ISDN network (end-to-end ISDN connection) or whether sec-
tions of it are analogue (non-end-to-end ISDN connection).
At transitions to other networks (for example from leased-line-network to cellular
network) it is possible, due to the lack of correct signalling, that an end-to-end
ISDN connection is signalled as a non-end-to-end connection.
End-to-End ISDN Connection
The release signal is sent as soon as the call is completed.
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 (subscriber C in Fig. 2.85) hangs up, it
can take a few minutes for the release signal to be sent.
• 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 (subscriber B in Fig. 2.85)
hangs up, the release signal is sent immediately.
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.
Note:
If an exchange-to-exchange connection is transferred to the exchange
using Partial Rerouting or Call Deflection, the PBX no longer has any
control over the connection and therefore cannot disconnect it.
To Next Page
Loading...
