Patton electronic IM2RC/F - Manual (Page 7)

4.3.2 CONNECTING THE LINE INTERFACE
The Model IM2RC/F is to be used with Patton function card access
products (i.e. 1045RC, 1092RC, 1092ARC, 2500RC) that support
64k/128k synchronous data rates. There are two essential
requirements for connecting the line interface on Model IM2RC/F:
1. These units work in pairs . Both units at the end of the twisted
pair must have the proper 2-Wire/4-Wire setting. For
instance, if you are operating in 2-Wire mode, both units must
be in the 2-Wire setting. Similarly, if you are operating in 4-
Wire mode, both units must be in the 4-Wire setting.
NOTE:
Currently only the 1092 and 1092A families support 2-Wire
Mode.
2. To function properly, the Model IM2RC/F needs one or two
twisted pairs of metallic wire. The twisted pairs must be
unconditioned , dry, metallic wire, between 19 (.9mm) and 26
AWG (.4mm) (Appendix B describes cable requirements) .
Standard dial-up telephone circuits, or leased circuits that run
through signal equalization equipment, or standard, flat
modular telephone type cable, are
not acceptable . Figure 7,
below, shows the pin/signal relationships of the Line Interface
Port.
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4.3 MAKING INTERFACE CONNECTIONS
The Model IM2RC/F is designed to provide access to a 64 kbps
co-directional G.703 PCM network. Figure 5 shows the position of the
G.703 interface and the line interface of the IM2RC/F. This section
describes how to connect the G.703 interface and the line interface.
4.3.1 CONNECTING TO A G.703 PCM NETWORK CHANNEL
The 120 Ohm RJ-45 port on a Model IM2RC/F is pre-wired for
direct connection to the G.703 PCM network. Connect the RJ-45 jack
provided by your digital service carrier to the 120 Ohm G.703 interface
on the Model IM2RC/F using a
straight through twisted pair cable
between 19 and 26 AWG (0.4mm to .9mm, inversely). To be sure you
have the right wiring, refer to Figure 6, below.
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120 Ohm RJ-45
G.703 Interface
RJ-45 Line Interface
Figure 5: Model IM2RC/F Interface Ports
Figure 6: 120 Ohm RJ-45 G.703 Interface
1 (RX+)
2 (RX-)
3 (N/C)
4 (TX-)
5 (TX+)
6 (N/C)
7 (N/C)
8 (N/C)
1
2
3
4
5
6
7
8
Notice! The G.703 line surge protection on this unit was
installed for circuit protection only. By no means does this
include the preservation of signal quality during a large surge.
Figure 7: RJ-45 Line Interface
1 (4-Wire RX+)
2 (4-Wire RX-)
3 (no connection)
4 (2-Wire TIP)/(4-Wire TX+)
5 (2-Wire RING)/(4-Wire TX-)
6 (no connection)
7 (no connection)
8 (no connection)
1
2
3
4
5
6
7
8