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# CTP1000 Interface Module 100-to-25-Pin Cable Pinouts

The CTP1004 and CTP1012 devices provide 100-pin connectors for external serial interface connections. The CTP1004 has one connector, and the CTP1012 has three 100-pin connectors. This 100-pin output is on a quad cable (a Revision B or later cable ordered separately) with the other end split into four standard DB-25 connectors, labeled P0, P1, P2, and P3, connected to the serial interface. These port numbers correspond to the port-numbering scheme implemented in the software configuration.

The pinouts for these connections have different configurations for EIA-530, RS-232, voice, and T1 interface signals.

## EIA-530 Connector Interface Signal Pinouts

Table 1 lists the EIA-530 interface signal pinouts for the 25-pin connector.

Table 1: EIA-530 Connector Interface Signals

DB-25 Pin | To/From CTP | Description | Circuit
--- | --- | --- | ---
1 | — | Shield | —
2 | To | Transmitted data—A | BA
3 | From | Received data—A | BB
4 | To | Request to send—A | CA
5 | From | Clear to send—A | CB
6 | From | Data set ready—A | CC
7 | — | Signal ground | Ground
8 | From | Data carrier detect—A | CF
9 | From | Receive signal element timing—B | DD
10 | From | Data carrier detect—B | CF
11 | To | Transmit signal element timing—B (DTE) | DA
12 | From | Transmit signal element timing—B (DCE) | DB
13 | From | Clear to send—B | CB
14 | To | Clear to send—B | BA
15 | From | Transmit signal element timing—A (DCE) | DB
16 | From | Received data—B | BB
17 | From | Receive signal element timing—A | DD
18 | To | Local loopback | LL
19 | To | Request to send—B | CA
20 | To | Data terminal ready—A | CD
21 | To | Remote loopback | RL
22 | From | Data set ready—B | CC
23 | To | Data terminal ready—B | CD
24 | To | Transmit signal element timing—A (DTE) | DA
25 | — | Test mode | TM

## RS-232 Connector Interface Signal Pinouts

Table 2 lists the RS-232 interface signal pinouts for the 25-pin connector.

Table 2: RS-232 Connector Interface Signals

DB-25 Pin | To/From CTP | Description | Circuit
--- | --- | --- | ---
1 | — | Shield | —
2 | To | Transmitted data—A | BA
3 | From | Received data—A | BB
4 | To | Request to send—A | CA
5 | From | Clear to send—A | CB
6 | From | Data set ready—A | CC
7 | — | Signal ground | Ground
8 | From | Data carrier detect—A | CF
15 | From | Transmit signal element timing—A (DCE) | DB
17 | From | Receive signal element timing—A | DD
20 | To | Data terminal ready—A | CD
22 | From | Data set ready—B | CC
24 | To | Transmit signal element timing—A (DTE) | DA

## Voice Interface Signal Pinouts

Table 3 lists the voice interface signal pinouts for the 25-pin connector.

Table 3: Voice Interface Signals

DB-25 Pin | To/From CTP | Description | Circuit
--- | --- | --- | ---
1 | — | Shield | —
2 | To | Channel 0 voice RX—A | Channel 0
3 | From | Channel 0 voice TX—A | Channel 0
4 | To | Channel 1 voice signaling input A | Channel 1
5 | From | Channel 1 voice signaling output A | Channel 1
6 | From | Channel 0 voice signaling output A | Channel 0
9 | From | Channel 1 voice TX—A | Channel 1
11 | To | Channel 1 voice RX—B | Channel 1
13 | From | Channel 1 voice signaling output—B | Channel 1
14 | To | Channel 0 voice RX—B | Channel 0
16 | From | Channel 0 voice TX—B | Channel 0
17 | From | Channel 1 voice TX—B | Channel 1
19 | To | Channel 1 voice signaling input—B | Channel 1
20 | To | Channel 0 voice signaling input—A | Channel 0
22 | From | Channel 0 voice signaling output—B | Channel 0
23 | To | Channel 0 voice signaling input—B | Channel 0
24 | To | Channel 1 voice RX—A | Channel 1

## T1 Interface Signal Pinouts

Table 4 lists the T1 interface signal pinouts for the 25-pin connector.

Table 4: T1 Interface Signals

DB-25 Pin | To/From CTP | Description
--- | --- | ---
1 | — | Shield
2 | To | Transmitted data—A
3 | From | Received data—A
7 | — | Signal ground
14 | To | Transmitted data—B
16 | From | Received data—B

#### Published: 2010-05-11