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IXC
DS0
DP
T1
IXC
DS0
DP
T1
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.
Table 1. Compliance Codes
Code
Power Code (PC)
Telecommunication Code (TC)
Installation Code (IC)
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.
61291004L2-5B
GPC, D4, or SLC96
DDB
DS0
DS0
DDB
MJU
DS0
DDB
DS0
DDB
DS0
CO
Figure 3. Multipoint DDS Deployment
Test
Head
DS0
DS0
CO
Figure 4. Back-Hauled IXC T1 to DDS
Input
Output
F
C
–
X
A
–
61291004L2-5, Issue 2
2-wire
Loop
TR
TR
OCU-R
50 kft
2-wire
Loop
TR
TR
OCU-R
50 kft
2-wire
Loop
TR
TR
OCU-R
50 kft
2-wire
Loop
TR
TR
OCU-R
50 kft
2-wire
Loop
TR
TR
OCU-R
DDB
50 kft
GPC, D4,
or
SLC96
+5V
IN CLK
-48V
(E) EA
(M) MA
(SB) MB
MA, MB: DS0 Input Pair
EA, EB: DS0 Output Pair
T, R: Customer Loop
Figure 5. Connector Pin Assignments
DSU/
CSU
DSU/
CSU
DSU/
CSU
DSU/
CSU
Customer Premises
DSU/
CSU
Customer Premises
FRM GND
28
1
29
2
GND
30
3
31
4
GND
32
5
33
6
34
7
35
8
36
9
37
10
38
11
39
12
40
13
41
14
-48R
42
15
43
16
44
17
45
18
EB (SC)
46
19
47
20
48
21
49
22
50
23
R
T
51
24
52
25
53
26
54
27
3
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