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PG (to pin 1)
SDa (to pin 2)
SCTa (to pin 6)
RDa (to pin 4)
RTSa (to pin 3)
SCRa (n/c)
CTSa (n/c)
LL (n/c)
10
DSRa (n/c)
11
DTRa (n/c)
12
DCDa (to pin 5)
13
14
RL (n/c)
15
16
SCTEa (n/c)
17
TM (n/c)
18
SG (n/c)
19
Table App A-2 identifies the RJ45 connector pin assignments for the T1/E1 port on
the T1/E1 CE version of the Speed Touch 591s.
Speed Touch 591s Technical Practices
February 2001
90-8785-01
Figure App A-4 X.21, DCE, DB15 female connector
1
20
SG (to pin 8)
2
21
3
22
SDb (to pin 9)
4
23
SCTb (to pin 13)
5
24
RDb (to pin 11)
6
25
RTSb (to pin 10)
7
26
SCRb (n/c)
8
27
CTSb (n/c)
9
28
29
DSRb (n/c)
30
DTRb (n/c)
31
DCDb (to pin 12)
32
33
34
35
SCTEb (n/c)
36
37
SG (n/c)
User port
Note —
The LL and RL pins are not supported.
Table App A-2 RJ45 connector pin assignments for the T1/E1 port
Pin
1
2
3
4
5
6
7
8
App A. Pin and signal assignments
PG
1
Ta
2
Ca
3
Ra
4
Ia
5
Sa
6
7
SG
8
Cable (part number 90-3578-01)
connector at equipment end
Signal
Rx ring
Rx tip
n/c
Tx tip
Tx ring
n/c
n/c
n/c
9
Tb
10
Cb
11
Rb
12
Ib
13
Sb
14
15
12446
A-5
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