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E1 and T1 RJ-48 Cable Pinouts

The E1 and T1 PIMs use an RJ-48 cable, which is not supplied with the PIM.

To maintain agency approvals, use only a properly constructed, shielded cable.

Table 58, Table 59, Table 60, and Table 61 describe the RJ-48 connector pinouts.

Table 58: RJ-48 Connector to RJ-48 Connector (Straight) Pinout

RJ-48 Pin (on T1/E1 PIM) (Data Numbering Form)

RJ-48 Pin

(Data Numbering Form)

Signal

1

1

RX, Ring, –

2

2

RX, Tip, +

4

4

TX, Ring, –

5

5

TX, Tip, +

3

3

Shield/Return/Ground

6

6

Shield/Return/Ground

7

No connect

No connect

8

No connect

No connect

Table 59: RJ-48 Connector to RJ-48 Connector (Crossover) Pinout

RJ-48 Pin (on T1/E1 PIM)

(Data numbering form)

RJ-48 Pin

(Data numbering form)

Signal

1

4

RX/Ring/– <––>TX/Ring/–

2

5

RX/Tip/+ <––>TX/Tip/+

4

1

TX/Ring/– <––>RX/Ring/–

5

2

TX/Tip/+ <––>RX/Tip/+

3

3

Shield/Return/Ground

6

6

Shield/Return/Ground

7

No connect

No connect

8

No connect

No connect

Table 60: RJ-48 Connector to DB-15 Connector (Straight) Pinout

RJ-48 Pin (on T1/E1 PIM)

(Data numbering form)

DB-15 Pin

(Data numbering form)

Signal

1

11

RX/Ring/– <––>RX/Ring/–

2

3

RX/Tip/+ <––>RX/Tip/+

4

9

TX/Ring/– <––>TX/Ring/–

5

1

TX/Tip/+ <––>TX/Tip/+

3

4

Shield/Return/Ground

6

2

Shield/Return/Ground

7

No connect

No connect

8

No connect

No connect

9

No connect

No connect

10

No connect

No connect

11

No connect

No connect

12

No connect

No connect

13

No connect

No connect

14

No connect

No connect

15

No connect

No connect

Table 61: RJ-48 Connector to DB-15 Connector (Crossover) Pinout

RJ-48 Pin (on T1/E1 PIM)

(Data numbering form)

DB-15 Pin

(Data numbering form)

Signal

1

9

RX/Ring/– <––>TX/Ring/–

2

1

RX/Tip/+ <––>TX/Tip/+

4

11

TX/Ring/– <––>RX/Ring/–

5

3

TX/Tip/+ <––>RX/Tip/+

3

4

Shield/Return/Ground

6

2

Shield/Return/Ground

7

No connect

No connect

8

No connect

No connect

9

No connect

No connect

10

No connect

No connect

11

No connect

No connect

12

No connect

No connect

13

No connect

No connect

14

No connect

No connect

15

No connect

No connect


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