CTP2000 FXS and FXO Interface Module Cables and Pinouts
Required Cables
The CTP2000 2W-FXS and 2W-FX0 interface modules require the use of double-shielded cables (copper braid plus aluminum mylar foil) to ensure EMI Compliance.
RTM Pinout Locations
Figure 1 shows the pinout locations for both the CTP2000 2W-FXS and 2W-FXO interface modules.
FXS Connector Pinouts
The RTM for the CTP2000 2W-FXS interface module uses a RJ-21 25-pair Telco connector labeled A. The A connector has 24 FXS ports.
FXS R is connected to FXO T; FXS T is connected to FXO T.
Table 1 lists the RTM pinouts for the FXS module.
Pin |
Signal |
Signal |
Pin |
|---|---|---|---|
1 |
Port 0 R |
Port 0 T |
26 |
2 |
Port 1 R |
Port 1 T |
27 |
3 |
Port 2 R |
Port 2 T |
28 |
4 |
Port 3 R |
Port 3 T |
29 |
5 |
Port 4 R |
Port 4 T |
30 |
6 |
Port 5 R |
Port 5 T |
31 |
7 |
Port 6 R |
Port 6 T |
32 |
8 |
Port 7 R |
Port 7 T |
33 |
9 |
Port 8 R |
Port 8 T |
34 |
10 |
Port 9 R |
Port 9 T |
35 |
11 |
Port 10 R |
Port 10 T |
36 |
12 |
Port 11 R |
Port 11 T |
37 |
13 |
Port 12 R |
Port 12 T |
38 |
14 |
Port 13 R |
Port 13 T |
39 |
15 |
Port 14 R |
Port 14 T |
40 |
16 |
Port 15 R |
Port 15 T |
41 |
17 |
Port 16 R |
Port 16 T |
42 |
18 |
Port 17 R |
Port 17 T |
43 |
19 |
Port 18 R |
Port 18 T |
44 |
20 |
Port 19 R |
Port 19 T |
45 |
21 |
Port 20 R |
Port 20 T |
46 |
22 |
Port 21 R |
Port 21 T |
47 |
23 |
Port 22 R |
Port 22 T |
48 |
24 |
Port 23 R |
Port 23 T |
49 |
FXO Connector Pinouts
The RTM for the CTP2000 2W-FXO interface module uses a RJ-21 25-pair Telco connector labeled A. The A connector has 24 FXS ports.
FXO T is connected to FXS R; FXO T is connected to FXS T.
Table 2 lists the RTM pinouts for the FXO module.
Pin |
Signal |
Signal |
Pin |
|---|---|---|---|
1 |
Port 0 T |
Port 0 R |
26 |
3 |
Port 1 T |
Port 1 R |
28 |
5 |
Port 2 T |
Port 2 R |
30 |
7 |
Port 3 T |
Port 3 R |
32 |
9 |
Port 4 T |
Port 4 R |
34 |
11 |
Port 5 T |
Port 5 R |
36 |
13 |
Port 6 T |
Port 6 R |
38 |
15 |
Port 7 T |
Port 7 R |
40 |
17 |
Port 8 T |
Port 8 R |
42 |
19 |
Port 9 T |
Port 9 R |
44 |
21 |
Port 10 T |
Port 10 R |
46 |
23 |
Port 11 T |
Port 11 R |
48 |