System Functions and Features as of I7.9
202
Call routing
sy
d-
020
0/3.
0
– I7.
9
– 1
1
.2009
Note:
If an exchange-to-exchange connection is transferred to the exchange
using Partial Rerouting or Call Deflection, the PBX no longer has any con-
trol over the connection and therefore cannot disconnect it.
Analogue-Analogue (A-A) or Digital-Analogue (D-A)
Release on the analogue interface cannot be guaranteed with these connection
types. On analogue network interfaces the PBX detects loop interruptions, polarity
reversal
1)
and congestion tone
as release criterion. The detection can be config-
ured for each analogue network interface (CM 2_2_1).
Tab. 65
Release signal: System configuration
Ascotel® IntelliGate® Net:
Detection of the congestion tone is automatically adapted to the country
configured under the AIN region. In an AIN the nodes may be spread over
different regions or even countries. An AIN region is assigned to one or
more AIN nodes. An AIN region can also be assigned for each trunk group.
The trunk group allocation takes priority over the node-specific alloca-
tion.
•
Any exchange-to-exchange connection is disconnected at the latest after 2 hours.
•
The maximum duration of an analogue exchange-to-exchange connection can
be further restricted for the A-A connection type (1...120 minutes).
Note:
As release cannot be guaranteed for connection types D-A and A-A, unin-
tentional high costs can occur. What's more the national guidelines and
regulations should be observed before enabling these connection types.
1)
A150/300 only
Parameter
Parameter value
Remarks
Release signal
<
Yes
/
No
>
Release signal type
<
Loop-break
/
Polarity reversal
/
Congestion tone
>
The frequency and the time sequence of
the congestion tone vary from country to
country.
Congestion tone level
<
Low
/
High
>
The sound level of the congestion tone can
vary greatly within a country and depend-
ing on the line length. With this setting the
detection can be adapted to the existing
level.