Table 83: RJ-48 Connector to DB-15 Connector (Straight) Pinout

Signal
DB-15 Pin
(Data Numbering
Form)
RJ-48 Pin (on T1/E1 PIM)
(Data Numbering Form)
RX/Ring/ <––>RX/Ring/111
RX/Tip/+ <––>RX/Tip/+32
TX/Ring/ <––>TX/Ring/94
TX/Tip/+ <––>TX/Tip/+15
Shield/Return/Ground43
Shield/Return/Ground26
No connectNo connect7
No connectNo connect8
No connectNo connect9
No connectNo connect10
No connectNo connect11
No connectNo connect12
No connectNo connect13
No connectNo connect14
No connectNo connect15

Table 84: RJ-48 Connector to DB-15 Connector (Crossover) Pinout

Signal
DB-15 Pin
(Data Numbering
Form)
RJ-48 Pin (on T1/E1 PIM)
(Data Numbering Form)
RX/Ring/ <––>TX/Ring/91
RX/Tip/+ <––>TX/Tip/+12
TX/Ring/ <––>RX/Ring/114
TX/Tip/+ <––>RX/Tip/+35
Shield/Return/Ground43
Shield/Return/Ground26
E1 and T1 RJ-48 Cable Pinouts 239
Chapter 13: Network Cable Specifications and Connector Pinouts