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TIELINE CONNECTION OF THE EXCHANGES
1. Function of the Central Processing Unit CPU-56
To make communications between exchanges
possible in the EXES-5000 system, the CPU-56
and the Tieline Unit TI-52 are required in
addition to the exchange EX-510 or the EX-520.
The TI-52 is the interface unit for trans-
mitting and receiving audio signals and dial
data signals between the exchanges.
After receiving dial signals from the station,
the CPU-56 transmits the dial data signals to
the TI-52 and instructs it to make calls to
the other exchange. The CPU-56 also receives
the dial data signals from the other exchange through the TI-52 and calls the
station which it is instructed to call by the other exchange.
Overall functions of the system using the tieline function are determined by
programming made in the CUP-56.
Station
Exchange A
Exchange B
Call
Station
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