3
61291004L2-5, Issue 2
61291004L2-5B
Compliance Codes
This product is intended for installation in a restricted
access location in a Type B or E enclosure only. In
normal operation, loop current will not exceed 22 mA
@ -130 Vdc with a maximum power requirement of
100 mA from -48 Vdc. See
Table 1
for codes.
Signal Pinout
The ADTRAN TRDDB plugs directly into a WECO
or equivalent D4 channel bank or the ADTRAN ACT
1900/2300 channel bank. No special wiring is
required. The 2-wire loop is connected using the Tip
(pin 24) and the Ring (pin 51) on the D4 backplane.
The 4-wire DS0 signal uses MA (pin 46) and MB (pin
48) as the DS0 input pair and EA (pin 45) and EB (pin
19) as the DS0 output pair. Refer to
Figure 5
for
pinout assignments.
Code
Input
Output
Power Code (PC)
F
C
Telecommunication Code (TC)
–
X
Installation Code (IC)
A
–
Table 1. Compliance Codes
Figure 5. Connector Pin Assignments
Figure 4. Back-Hauled IXC T1 to DDS
DS0
DS0
IXC
T1
DS0
DP
TR
OCU-R
DSU/
CSU
GPC, D4,
or
SLC96
TR
DDB
Test
Head
2-wire
Loop
50 kft
Customer Premises
CO
Figure 3. Multipoint DDS Deployment
DS0
DS0
DS0
DS0
DS0
IXC
T1
DS0
DP
MJU
TR
OCU-R
TR
DDB
DSU/
CSU
GPC, D4, or SLC96
2-wire
Loop
50 kft
TR
OCU-R
TR
DDB
DSU/
CSU
2-wire
Loop
50 kft
TR
OCU-R
TR
DDB
DSU/
CSU
2-wire
Loop
50 kft
TR
OCU-R
TR
DDB
DSU/
CSU
2-wire
Loop
50 kft
Customer Premises
CO
MA, MB: DS0 Input Pair
EA, EB: DS0 Output Pair
T, R: Customer Loop
1
28
2
29
3
30
4
31
5
32
6
33
7
34
8
35
9
36
10
37
11
38
12
39
13
40
14
41
15
42
16
43
17
44
18
45
19
46
20
47
21
48
22
49
23
50
24
51
25
52
26
53
27
54
FRM GND
GND
GND
-48R
EB (SC)
T
IN CLK
+5V
-48V
(E) EA
(M) MA
(SB) MB
R
Содержание Total Reach TRDDB
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