Specifications

Appendix A
41
When the E1/DATA is ordered with a RS-449 interface, the unit comes with a HDB26 male to DB37 Female
adapter cable, 1 meter long. The pin assignment follows the table below.
Abbreviation HDB26
PIN#
DB37
PIN#
RS-449
Circuit
FG 1
↔
1 Frame
SG 7
↔
19,20,37 SG,RC,SC
TD(A)
TD(B)
2
11
↔
↔
4
22
SD(A)
SD(B)
RD(A)
RD(B)
3
21
↔
↔
6
24
RD(A)
RD(B)
RTS(A)
RTS(B)
4
13
↔
↔
7
25
RS(A)
RS(B)
CTS(A)
CTS(B)
5
14
↔
↔
9
27
CS(A)
CS(B)
DSR(A)
DSR(B)
6
22
↔
↔
11
29
DM(A)
DM(B)
DTR(A)
DTR(B)
20
12
↔
↔
12
30
TR(A)
TR(B)
DCD(A)
DCD(B)
8
26
↔
↔
13
31
RR(A)
RR(B)
ETC(A)
ETC(B)
24
16
↔
↔
17
35
TT(A)
TT(B)
TC(A)
TC(B)
15
23
↔
↔
5
23
ST(A)
ST(B)
RC(A)
RC(B)
17
25
↔
↔
8
26
RT(A)
RT(B)
RLB 9
↔
14 RL
LLB 18
↔
10 LL
TM 10
↔
18 TM
Table 2-5 DATA RS-449 cable