Interphase-tech iSPAN Manual de usuario Pagina 49

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Chapter 3: Connecting to the Line
iSPAN Serial WAN Adapter Users Guide 29
V.11 Interface
The following specifications describe the V.11 interface:
• Electrical specification: CCITT V.11, CCITT X.27,
TIA/EIA RS-422 (0-5V differential)
• Signaling specification: CCITT X.21
• Maximum data rate: 2 Mbps (card limitation)
• Maximum cable length: 150 feet (at 2 Mbps)
Standard DCE connector: ISO 4903 (DB15)
The following table and illustrations describe the V.11 signals
on the connector..
Pin # Tw. Pair Name (CCITT #) Signal Direction
2 I T(A) (103A) Transmit Data Out
14 I T(B) (103B) Transmit Data Out
3 II R(A) (104A) Receive Data In
16 II R(B) (104B) Receive Data In
24 III X(A) (113A) Transmit Clock Out
11 III X(B) (113B) Transmit Clock Out
17 IV S(A) (115A) Receive Clock In
9 IV S(B) (115B) Receive Clock In
4 V C(A) (105A) Command Out
19 V C(B) (105B) Command Out
5 VI I(A) (109A) Indication In
13 VI I(B) (109B) Indication In
18 - -ENV11 V.11 Interface enable In
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