Black Box ME260A, Owner'S Manual

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MODULAR MODEM ELIMINATOR
Appendix A: Interface Data
A.1 General-Purpose Modules
Table A-1 lists the line functions in the interface connectors of the Modular
Modem Eliminator’s general-purpose plug-in modules.
Table A-1. Plug-in module’s interface connectors (line functions).
Description Abbr. Direction EIA ITU V.35 V.36 (RS-449) ITU X.21
of Signal RS-232C V.24 Pin Type Pin Wire Circuit Abbr. Circuit Pin
to RS-232D V.35 No. Name
CircuitPin V.36
Ground Protective AA 1 101 A 1 Shield 1
Ground
(Shield)
Signal SG AB 7 102 B 19 SG G Ground 8
Ground
(Common
return)
DTE DCE 102a 37 SC
Common
Return
DCE DTE 102b 20 RC
Common
Return
Data Transmitted TD DCE BA 2 103 P(A) Bal 4 A SD T Transmit 2(A)
Data S(B) 22 B 9(B)
Received RD DTE BB 3 104 R(A) Bal 6 A RD R Receive 4(A)
Data T(B) 24 B 11(B)
Control Request to RTS DCE CA 4 105 C Unbal 7 A RS C Control 3(A)
Send 25 B 10(B)
Clear to CTS DTE CB 5 106 D Unbal 9 A CS
Send 27 B
Data Set DSR DTE CC 6 107 E Unbal 11 A DM
Ready 29 B
Data DTR DCE CD 20 108/2 H Unbal 12 A TR
Terminal 30 B
Ready
Data DCD DTE CF 8 109 F Unbal 13 A RR I Indication 5(A)
Carrier 31 12(B)
Detect