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CHAPTER 2 ND-71762 (E)
Page 12
Issue 2
GENERAL INFORMATION FOR CCIS
4.3 CCIS Network Modes
The signaling channels of a CCIS network can be connected in one of two ways: Associated Mode or Quasi-Asso-
ciated Mode.
4.3.1 Associated Mode
An Associated Mode network is configured with a signaling channel (data link) between all nodes in the network.
Signaling functions for all inter-node calls are carried over these dedicated signaling channels. In an Associated
Mode Network, if one of the signaling links should fail, signaling can easily be rerouted via another node. An ex-
ample of an Associated Mode network is shown in Figure 2-9 below.
Figure 2-9 Associated Mode Network
NODE
A
NODE
C
NODE
B
Communication Channel
Common Signaling Channel