Connections; Table 4. Front Panel Indications; Table 5. Front Panel Loopback Pushbuttons; Table 6. Card Edge Pin Assignments - ADTRAN T200 Installation And Maintenance Practice

Name
H T UR
1223024L2
DSL
LOCAL
DSL
DS1
DS1
ALM
ESF/ SF
(YEL) (GRN)
B8ZS/ AMI
(YEL) (GRN)
LLB/ RLB
ALM
(YEL) (GRN)
LOC
L
B
ESF/SF
K
REM
TX
C
M
U
O
S
N
T
RX
B8ZS/
AMI
R
S
2
3
2
LLB/
RLB

3. CONNECTIONS

When the circuit pack is installed in any of the H2TU-R
enclosures, all connections are made through the
enclosure backplanes.
The pin assignments for this unit are shown in
NOTE
Ensure that the chassis ground is properly
connected for either standalone or shelf
mounted applications.
4
Table 5. Front Panel LED Indications
Indication Description
Green DSL sync, no errors currently detected, and signal margin > 2 dB
No DSL sync, errors being detected, or signal margin ≤ 2 dB
Red
Green DS1 signal is present and no errors currently being detected
Red No DS1 signal or framing mismatch
OFF No active alarm present
Red Loss of DS1 signal to the unit
Yellow Loss of DSX signal to the H2TU-C
OFF Unit is provisioned for UNFRAMED data
Yellow Unit is provisioned for ESF data
Green Unit is provisioned for SF data
Yellow Indicates DS1 is provisioned for B8ZS line code
Green Indicates DS1 is provisioned for AMI line code
OFF Unit is NOT in loopback
Yellow Unit is in loopback (network and/or customer) at H2TU-R
Green Active remote loopback from the H2TU-C toward the customer
Table
Issue 1, December 2003

Table 6. Card Edge Pin Assignments

Pin Name
1 CH GND
5 DS1-T1
6.
7 H1-T
11 CH GND
12 GND
13 H1-R
15 DS1-R1
17 –48 VR
20 VCC
27 CH GND
35 –48 V
40 PROT-1
49 DS1-R
55 DS1-T
Description
Chassis ground
DS1 receive out tip (to customer)
HDSL2 Loop tip (facility)
Chassis ground
Ground for protection switching
HDSL2 Loop ring (facility)
DS1 receive out ring (to customer)
–48 VDC Return
+5 VDC for protection switching
Chassis ground
–48 VDC
Control line for protection switching
DS1 transmit in ring (from customer)
DS1 transmit in tip (from customer)
61223024L2-5A