3-5 The order of Tie-line link usage
The Tie-line Link Number which is used in calls between exchanges
is not directly indicated, but you can possibly get it from the link
number which is indicated on the HC-64 or HC-62.
When one Tie-line Link brings up some problems which cause the
system not to work properly, try to find which link number is
causing the problems from the indication on the HC-64 of the
exchange making the call.
As Fig. 1 and Fig. 2 show, in the exchanges which make calls, the
DL Link Number corresponds with Tl Tie-line Link Number.
In the exchange which is called, the Tie-line Link Number of the Tl
Unit is fixed by connection between exchanges.
DL Links are used in numerical order.
1. Tie-line for 2 exchanges
Exchange which calls
Exchange which is called
Station which calls
Station which is called
2. Tie-line for 3 exchanges
Fig. 1
Exchange which is called
Station which calls
Station which is called
Fig. 2
Exchange which calls
No.47O
No.47O
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