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Chapter 3: Connecting to the Line
iSPAN Serial WAN Adapter Users Guide 25
Figure 3-2. V.24 Cable Wiring
V.35 Interface
The following specifications describe the V.35 interface:
• Electrical levels: V.35 (+/0.3V differential) for data
and clocks, V.28 (+/-12V single-ended) for other
modem signals
• Maximum data rate: 2 Mbps (card limitation)
• Maximum cable length: 100 feet (at 2 Mbps)
• DCE standard connector: ISO2593
Adapter
side
DCE
side
Male DB25
connector
ISO2110
Male DB25
connector
Drain wire
Braid
2
3
4
5
6
7
8
15
17
20
22
24
1
2
3
4
5
6
7
8
15
17
20
22
24
1