Nortel ICS Install Manual page 131

Received Destination
Node A Node E
Node A Node C
N0130943 02
Private networking using PRI SL-1 / 131
Description
User in Calgary dials a 765-xxxx number.
DN type: Public
Node A receives it and identifies it as being for B.
Uses private trunk to route call to B.
Incoming interface: Public
Destination: Remote node
Outgoing interface: Private
Node B receives it and identifies it as being for E.
Uses private trunk to route call to E.
Incoming interface: Private
Destination: Remote node
Outgoing interface: Private
Node E receives the call and identifies it as
terminating locally. Uses target line to route call.
Incoming interface: Private
Destination: Local (target line)
User in Calgary dials a 761-xxxx number which is
answered with DISA.
Incoming interface: Public
DN type: Public
Destination: Local (DISA DN)
User enters a COS password and a private DN
for Node C
i.e. 6 + 393-xxxx
DN type: Private
Node A receives it and identifies it as being for C.
Uses the private trunk to route the call to C.
Incoming interface: (DISA user)
Destination: Remote node
Node C receives the call and identifies it as
terminating locally. Uses target line to route call.
Incoming interface: Private
Destination: Local (target line)
Modular ICS 7.1 Installer Guide