Toa N-8000 Series - Manual (Page 104)

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Chapter 1 GENERAL DESCRIPTION
11. OTHER FuNCTION OuTLINE
11.1. Tie-line Connection
Conversations or paging can be performed by connecting the N-8000MI unit to the exchange of EXES-2000 or
EXES-6000 Series intercom systems. Wiring requires two pairs of cables per line, and the connected exchange
must be equipped with a Tie-line unit (TI-20A for the EXES-2000 and TI-600 for the EXES-6000).
N-8000MI
Audio signal: 2 pairs
(0 dB)*
TI-20A
TI-600
EXES-2000
EXES-6000
* 0 dB = 1 V
11.2. PBX Interface (E and M Interface)
Connecting the N-8000MI unit to a PBX permits conversations to be made between the intercom station and
the telephone, or paging calls to be initiated from the telephone. The N-8000MI is connected to a standard
PBX analog E&M interface using 3 pairs of cables per line. Since the ground return method is employed for
the installation of the system connecting between the trunk and the N-8000MI, use grounding or connect the
grounding cable separately.
N-8000MI
Audio signal: 2 pairs (0 dB*)
Control: 1 pair (E and M)
PBX
analog E&M interface
Grounding
or
Direct connection
Grounding