Interphase Tech iSPAN - Manual (Page 40)

DB25 Connector
20 Interphase Corporation
C
AUTION
Incorrectly wired or installed cabling is the most common
cause of communications problems for wide area
networks. Interphase recommends that you work with a
qualified cable installer for assistance with your cabling
requirements.
DB25 Connector
The iSPAN-Serial WAN adapter connector uses a DB25
pinout. The DB25 pin signals vary according to the interface
selected. This external link is a Low Voltage Directory (LVD)
according to safety standard IEC950.
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AUTION
The adapter’s DB25 female connector is for serial WAN
connections only. Take care not to connect it to a parallel
device. (Parallel ports also use DB25 connectors.)
Connecting it to a parallel device may result in damage to
both the adapter and the parallel device.
The following table lists pinout features for the various
interfaces.
Pin V.24 V.11 V.35 Direction
1 Shield Shield Shield Common
2 TxD (Transmit
Data) T(A) (Transmit
Data) TXD(A)
(Transmit Data) Out