Interphase Tech iSPAN - Manual (Page 42)

V.24 Interface
22 Interphase Corporation
V.24 Interface
The following specifications describe the V.24 interface:
• Electrical specification: CCITT V.28, TIA/EIA RS-
232-C (+/-12V single-ended)
• Signaling: CCITT V.24
• Maximum data rate: 20 kilobits per second (Kbps)
• Maximum cable length: 50 feet
• Standard DCE connector: ISO2110 (DB25)
18 -ENV11 (V.11
Interface enable) In
19 C(B)
(Command) Out
20 DTR (Data
Terminal
Ready) DTR (Data
Terminal Ready) Out
21 -ENV35 In
22 RI (Ring
Indication) RI (Ring
Indication) In
23
24 TXCout
(Transmit
Clock—DTE) X(A) (Transmit
Clock) TXCout(A)
(Transmit
Clock—DTE) Out
25 -TEST -TEST -TEST In
Pin V.24 V.11 V.35 Direction