ACC Installation and Configuration Guide

Software Installation and Verification
Installation Verification
Chapter 2 45
In the second example, both internal and external tests are performed by
using the ie test option. In this example, the loopback hood is not
connected to the port being tested, and therefore the external tests fail.
Example 2
ZMNTR> lb 1 0 ie
Loopback test on Mux 01 port 0, zlu 0710
Loopback protocol functionality .. OK
RS232 RTS/CTS internal loopback .. OK
RS232 RTS/CTS external loopback .. Test failed (RTS/CTS)
RS232 DTR/DCD internal loopback .. OK
RS232 DTR/DCD external loopback .. Test failed (DTR/DCD)
RS232 DTR/DSR external loopback .. Test failed (DTR/DCD)
ISCC data loopback test .......... OK
RS232 internal data loopback ..... OK
RS232 external data loopback ..... Data test timed out
For a 4-port E1/T1 Mux card, the results of these same test would appear
as follows:
ZMNTR> lb 1 0 i
Internal loopback on card 1 port 0 :Passed
ZMNTR> lb 1 0 ie
Internal loopback on card 1 port 0 :Passed
Loopback message lost
External loopback on card 1 port 0 :Failed
ZMNTR> exit