Routing elements
116
System functions and features as of R3.0
syd-0367/1.3 – R3.0 – 03.2013
Configuration:
Once a trunk group contains a B-channel group, the trunk group’s protocol can no
longer be changed. For this reason it is important to proceed using the following
configuration stages:
1. Enter the network interface of the basic or primary rate access in the first trunk
group (e.g. "3.17").
2. Set the trunk group protocol (e.g. DSS1).
3. Divide the B channels of the basic or primary rate access into B-channel groups.
The network interface already entered is changed to B channel group 1 (entry
changes to 3.17/1).
4. Enter the other B-channel groups in the required trunk groups. The protocol of
the first trunk group is set automatically.
Line group in the ISDN
Digital outside lines that are to have the same traffic characteristics can be grouped
into line groups in the public network (e.g. several basic accesses with the same
DDI block).
A line group must also be recreated in the communication server. For this the net-
work connections of the exchange lines of a line group must be allocated to the
same trunk group (see Fig. 46).
A line group can consist of basic accesses, primary rate accesses or individual B-
channel groups of primary rate accesses (also mixed).
Fig. 46 Recreating a line group in the communication server
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