Testing; Diagnostic Test Support; Figure 5-2 Diagnostic Test Paths - Paradyne NP 110 User Manual

Testing

Diagnostic Test
Support
(a)
N e tw
P o rt
T o T 1
L oo p C o de s (c)
980-001-0240B
November 2000
FrameSaver NP 110 provides management access diagnostic test support.
FrameSaver NP 110 responds to and can issue T1 loopback codes, set operator-initiat-
ed loopbacks, source BER Tests directed toward the T1 circuit or toward the DTE, and
source Frame Relay Test Packets toward the T1 circuit.
A block diagram of the test paths within the NP 110 is shown in Figure 5-2.
(b) (d) (e)
C S U
(f)

Figure 5-2 Diagnostic Test Paths

The arrows indicate the direction of the loopbacks and direction of the sourced test.
Loops and sources are as follows:
a. CSU loop in response to telco-initiated loop code, or operator command.
b. Payload loop in response to telco-initiated loop code, or operator command.
c. Line and Payload Loop codes directed toward the T1.
d. Payload Loop in response to V.54 code (DS0 specific).
e. Line loop directed toward the CPE.
f. Frame Relay Test Packets directed toward the T1 circuit by operator commands
issued through management session. Results are updated every five seconds and
displayed on the Device Status / Test screen.
g. BER Test directed toward the T1 circuit or DTE by operator commands issued
through management session. BER results are updated every five seconds and
displayed on the Device Status / Test screen.
h. User loop directed toward the Network or the CPE.
All tests are initiated from the Device Status / Test screen.
The Device Status / Test screen is accessed from the System View screen, selecting
[DT] by typing "DT" followed by ENTER.
FrameSaver NP 110 User's Manual - Installation Guide
F ra m e
M an a g er
(g)
(g)
B E R T
5 Diagnostics
(h)
T o C P E
U se r
P o rt
5-3