Reference and Sources: 
V.35 DCE Cable Pinout (DB-60 to 34-Pin) | 60 Pin1 | Signal | Description | Direction | 34 Pin | Signal | J1-49
J1-48 | MODE_1
GND | Shorting group | - | - | - | J1-50
J1-51 | MODE_0
GND | Shorting group | - | - | - | J1-53
J1-54
J1-55
J1-56 | TxC/NIL
RxC_TxCE
RxD/TxD
GND | Shorting group | - | - | - | | J1-46 | Shield_GND | Single | - | J2-A | Frame GND | J1-45
Shield | Circuit_GND
- | Twisted pair no. 12 | -
- | J2-B
Shield | Circuit GND
- | J1-35
Shield | CTS/RTS
- | Twisted pair no. 8 | <--
- | J2-C
Shield | RTS
- | J1-42
Shield | RTS/CTS
- | Twisted pair no. 9 | -->
- | J2-D
Shield | CTS
- | J1-43
Shield | DTR/DSR
- | Twisted pair no. 10 | -->
- | J2-E
Shield | DSR
- | J1-44
Shield | LL/DCD
- | Twisted pair no. 11 | -->
- | J2-F
Shield | RLSD
- | J1-34
Shield | DSR/DTR
- | Twisted pair no. 7 | <--
- | J2-H
Shield | DTR
- | J1-33
Shield | DCD/LL
- | Twisted pair no. 6 | <--
- | J2-K
Shield | LT
- | J1-28
J1-27 | RxD/TxD+
RxD/TxD- | Twisted pair no. 5 | <--
<-- | J2-P
J2-S | SD+
SD- | J1-18
J1-17 | TxD/RxD+
TxD/RxD- | Twisted pair no. 1 | -->
--> | J2-R
J2-T | RD+
RD- | J1-26
J1-25 | RxC/TxCE+
RxC/TxCE- | Twisted pair no. 4 | <--
<-- | J2-U
J2-W | SCTE+
SCTE- | J1-22
J1-21 | NIL/RxC+
NIL/RxC- | Twisted pair no. 3 | -->
--> | J2-V
J2-X | SCR+
SCR- | J1-20
J1-19 | TxCE/TxC+
TxCE/TxC- | Twisted pair no. 2 | -->
--> | J2-Y
J2-AA | SCT+
SCT- | Arrows indicate signal direction: --> indicates DTE to DCE, and <-- indicates DCE to DTE. 1 Any pin not referenced is not connected.
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