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USER’S MANUAL
Section 3: GUIDED TOUR of the HARDWARE 29
CABLE PIN OUT 9-PIN
Computer (DTE) Description Direction Telos Xstream
1 *Data Carrier Detect (DCD)
3
1#
2 Receive Data (RD)
3
2
3 Transmit Data (TD)
4
3
4 Data Terminal Ready (DTR)
4
Not used
5 Signal Ground (SG) 5
6 *Data Set Ready (DSR)
3
6#
7 Request to Send (RTS)
4
Not used
8 *Clear to Send (CTS)
3
8#
9 Ring Indicator (RI)
3
Not present
*Optional connection, may not be required
# This signal present on motherboards Rev "G" and later.
CABLE PIN OUT 25-PIN
Computer (DTE) Description Direction Telos Xstream
2 Transmit Data (TD)
4
3
3 Receive Data (RD)
3
2
4 Request to Send (RTS)
4
Not used
5 *Clear to Send (CTS)
3
8#
6 *Data Set Ready (DSR)
3
6#
7 Signal Ground (SG) 5
8 *Data Carrier Detect (DCD)
3
1#
20 Data Terminal Ready (DTR)
4
Not used
22 Ring Indicator (RI)
3
Not present
*Optional connection, may not be required
# This signal present on motherboards Rev "G" (-07) and later.
IfyouneedtoconnectyourXstreamtoamodem,usea"nullmodem"adaptersuchasRadio
Shack#26‐1496(25pinto25pin)or#26‐264(9pinto9pin).
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CURIOSITY NOTE!
The DB- designation for D-Sub connectors is from Cinch Corp’s part numbering system. The
proper Cinch designation for a 9-pin D-Sub connector is a DE-9p (plug) or DE-9s (socket) not
DB-9!
Other Cinch designations for D-Sub connectors are; DA-15, DB-25, DC-37 and DD-50.
Our thanks going out to Mike Schweizer, for contributing this information.