Routing elements
114
System functions and features as of R3.0
syd-0367/1.3 – R3.0 – 03.2013
5. 2. 1 Trunk Groups of Network Interfaces
General Rules and Settings
A network interface can only be assigned to a single trunk group.
A trunk group contains either analogue or digital network interfaces (the network
interface entered first is decisive).
The digital network interfaces of a trunk group lead either
• to the permanently networked PISN if Network type = private is set,
• to the public network if Network type = public is set.
The following rules apply to the setting of the transmission protocol (Protocol) for
the network interfaces of a trunk group:
• Trunk groups with Network type = private are usually set to the PSS1 (QSIG) pro-
tocol.
• Trunk groups with Network type = public are set to protocol DSS1.
Tip:
It is advisable to enter network interfaces that have the same destina-
tion in the same trunk group, for example to set up one trunk group for
the public network, one trunk group for PINX 1 and one trunk group
for PINX 2, etc.
Default settings
Newly set up digital network interfaces are automatically entered in trunk group 1.
Trunk group 1 is set to Network type = public and Protocol = DSS1.
Newly set up analogue network interfaces are automatically entered in trunk
group 2.
Trunk group 2 is set to Network type = public.
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