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2-14 CHAPTER 2: OVERVIEW
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.
Figure 2-11 UNIVERSAL to RS-449/V.36 Direct-Connect Cable
3Com does not sell this cable.
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
RS-449 male connector
Shield
Request to Send
Request to Send
Transmit Data
Transmit Data
Receive Data
Receive Data
Request to Send
Request to Send
Data Mode
Data Mode
Terminal Ready
Terminal Ready
Receive Timing
Receive Timing
Terminal Timing
Terminal Timing
Terminal Timing
Terminal Timing
Signal Ground
Send Common
Receive Common
Shield
Clear to Send
Clear to Send
Receive Data
Receive Data
Send Data
Send Data
Receiver Ready
Receiver Ready
Terminal Ready
Terminal Ready
Data Mode
Data Mode
Terminal Timing
Terminal Timing
Send Timing
Send Timing
Receive Timing
Receive Timing
Terminal Timing
Send Common
Receive Common
Shield
EIA (A)
EIA (B)
SD (A)
SD (B)
RD (A)
RD (B)
EIA (A)
EIA (B)
DM (A)
DM (B)
TR (A)
TR (B)
RT (A)
RT (B)
TT (A)
TT (B)
TT (A)
TT (B)
SG
SC
RC
Sheild
CS (A)
CS (B)
RD (A)
RD (B)
SD (A)
SD (B)
RR (A)
RR (B)
TR (A)
TR (B)
DM (A)
DM (B)
TT (A)
TT (B)
ST (A)
ST (B)
RT (A)
RT (B)
SG
SC
RC
1
9
27
6
24
4
22
13
31
12
30
11
29
17
35
5
23
8
26
19
37
20
1
7
25
4
22
6
24
7
25
11
29
12
30
8
26
17
35
17
35
19
37
20
To RS449/V.36 SNA Device
Name NameAbbr AbbrPin Pin
37-pin female connector
To UNIVERSAL port on bridge/router
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20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
SS2TRHWBook Page 14 Monday, May 5, 1997 3:11 PM