Universal To Rs-449/V.36 Direct Connect Cable - 3Com SuperStack II 32x Installation Manual

2-14 C 2: O
HAPTER VERVIEW

UNIVERSAL to RS-449/V.36 Direct Connect Cable

This cable connects the UNIVERSAL connector on the bridge/router to
the RS-449/V.36 port of an SNA legacy device.
To UNIVERSAL port on bridge/router
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
37-pin female connector
Name
Shield
Shield
EIA (A)
Request to Send
EIA (B)
Request to Send
SD (A)
Transmit Data
SD (B)
Transmit Data
RD (A)
Receive Data
RD (B)
Receive Data
EIA (A)
Request to Send
EIA (B)
Request to Send
DM (A)
Data Mode
DM (B)
Data Mode
TR (A)
Terminal Ready
TR (B)
Terminal Ready
RT (A)
Receive Timing
RT (B)
Receive Timing
TT (A)
Terminal Timing
TT (B)
Terminal Timing
TT (A)
Terminal Timing
TT (B)
Terminal Timing
Signal Ground
Send Common
Receive Common
Figure 2-11 UNIVERSAL to RS-449/V.36 Direct-Connect Cable
3Com does not sell this cable.
1
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
Abbr Pin
1
7
25
4
22
6
24
7
25
11
29
12
30
8
26
17
35
17
35
SG 19
SC 37
RC 20
To RS449/V.36 SNA Device
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
RS-449 male connector
Pin Abbr Name
Sheild
1 Shield
CS (A)
9 Clear to Send
CS (B)
27 Clear to Send
RD (A)
6 Receive Data
RD (B)
24 Receive Data
SD (A)
4 Send Data
SD (B)
22 Send Data
RR (A)
13 Receiver Ready
RR (B)
31 Receiver Ready
TR (A)
12 Terminal Ready
TR (B)
30 Terminal Ready
DM (A)
11 Data Mode
DM (B)
29 Data Mode
TT (A)
17 Terminal Timing
TT (B)
35 Terminal Timing
ST (A)
5 Send Timing
ST (B)
23 Send Timing
RT (A)
8 Receive Timing
RT (B)
26 Receive Timing
SG
19 Terminal Timing
SC
37 Send Common
RC
20 Receive Common