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Aria-34e
Digital Key Telephone System
4.7.1 Digital Keyset & Terminal Wiring
Wiring from the DTIB installed on universal slots and basic digital keyset interface
ports of the MBU to station modular block requires one pair of wire. Digitised voice,
signaling and power are sent over this pair. Figure 29 gives details on connections of
station jack to the system and Table 3 gives direct mapping with above mentioned
Table 2. For the basic 6 digital keystation ports in the MBU, refer to above Table 1.
Figure 29. DIGITAL STATION WIRING
MBU connector CN16
(for slot #4~7)
SLOT #N - T1
SLOT #N - R1
SLOT #N - T2
SLOT #N - R2
SLOT #N - T3
SLOT #N - R3
SLOT #N - T4
SLOT #N - R4
SLOT #N - T5
SLOT #N - R5
SLOT #N - T6
SLOT #N - R6
Table 3. DIRECT MAPPING TABLE FOR DIGITAL STATION
4.7.2 Electronic Keyset & Terminal Wiring
Wiring from the ETIB to station jack requires a four-wire line cord with modular type
plug. Two wires provide the audio or voice path, whilst the other two wires are used
for signaling to/from keyset. The "DATA" pair (DT, DR) is polarity sensitive, reversal
will not harm the keyset or system, but the port will not function properly. Power is
delivered by applying DC voltage to the center tap of the coupling transformers of
each of the 2 pairs by phantom power feeding function. Figure 30 gives details on
connections of stations to the system.
Aria Communications Pty Ltd.
A.C.N. 090 723 925
Direct mapping
to Digital Station Remark
DT - 1
Port 1
DR - 1
DT - 2
Port 2
DR - 2
DT - 3
Port 3
DR - 3
DT - 4
Port 4
DR - 4
DT - 5
Port 5
DR - 5
DT - 6
Port 6
DR - 6
WIRING
4-34
Installation
Rev 1.3
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