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Planning tips:
• B channels can only be grouped in sequence (e.g. channel group 1 contains B
channels 1 to 6).
• A B channel can only be allocated to one channel group.
• If the B-channel groups of a primary rate access are spread among different
trunk groups, the same protocol must be set for all trunk groups.
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 follow-
ing 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.
HBT_20321104_02/B0_en
ascom
Ascotel 2025/2045/2065
Routing Elements
2.57
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