Figure 5-58. Ds2 Loopbacks Menu (Ds2 #1) Example; Figure 5-59. Ds2 Network Loopback Test; Ds2 Loopbacks; Ds2 Network - ADTRAN MX2820 System Manual

DS2 LOOPBACKS

Performing a loopback test for the DS2 network requires selecting an option from 30 to 36
from the Loopbacks menu screen.
menu. Select option 1,
Shelf: 1
Unacknowledged Alarms: None
Selection:

Figure 5-58. DS2 Loopbacks Menu (DS2 #1) Example

DS2 Network

A DS2 Network loopback test loops the selected DS2 signal back to the DS3 network prior to
being passed through the M12/G.747 demultiplexer. All T1/E1 lines attached to the DS2
network receive data normally, but all data inserted into the T1/E1 lines attached to the
selected DS2 signal are ignored and replaced by the incoming DS2 network data.
provides an illustration for this test.
SX-3
LIU
61186003L1-1D
Figure 5-58
, for the appropriate DS2 to end a test in progress.
D M
ATA ODE
Slot: 4A ADTRAN MX2820 System
DS2 Loopbacks
DS2 #1: Data Mode
1 - Data Mode
2 - Network Loopback
F
R
M23
A
MUX/
S S
M
MUX
3 2
E
R

Figure 5-59. DS2 Network Loopback Test

Section 5, User Interface Guide - UIG-530, M13 Loopbacks
shows an example for the DS2 #1 Loopbacks
'?' - System Help Screen
F
R
M12/G.747
A
MUX/ MUX
M
(1 OF 7)
E
R
04/13/04 16:49
TID: HTVLALEXD16
CO EC T1/E1 LIU
(1 of 28) (1 of 28)
CO EC T1/E1 LIU
(28 of 28) (28 of 28)
Figure 5-59
5-91