Slt Adapter4 - NEC Aspila EX Hardware Manual

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Section 4: Optional Equipment
SLT ADAPTER
Using the SLT Adapter (Figure 4-37 - Figure 4-38)
The SLT Adapter converts a digital port from an ESIU PCB into an analogue port which can be used
for connecting on-premise single line devices (i.e., telephones, fax machines, modems, etc.). Each SLT
Adapter requires its own digital port.
The SLT Adapter provides the ring generator circuit used by the analogue device. The unit provides
constant current which is fixed at 47 mA.
Refer to Single Line Telephones in the Software Manual for more details.
Installing the SLT Adapter
1.
2.
3.
4.
5.
6.
Refer to Single Line Telephones in the Software Manual for programming details.
4-34 Section 4: Optional Equipment
Chuyên phân phối tổng đài NEC
Maximum Cable Distance From ESIU
Loop Resistance
Run one-pair station
cable for each SLT
Adapter.
Connect the cable to
the corresponding
RJ-61 connector on
the ESIU PCB.
Install a Master type
socket for the SLT
Adapter within 2
metres of the mod-
ule's location.
Terminate the sta-
tion cable to pins 2
& 5 in the socket.
Plug a line cord into
the SLT Adapter's
connector marked
"ESIU". Plug the
opposite end of the
line cord into the
mster socket.
Plug a second line cord into the SLT Adapter's connector marked "TEL". The opposite end of
the line cord should be plugged into the analogue device to be used.
600m @ 24 AWG
500 ohms
Figure 4-37: INSTALLING THE SLT ADAPTER
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