Acceptance tests
Page 55 of 66
DTI/CPI
Installation and data administration
Link diagnostic and remote loopback tests
The remote loopback test and the link diagnostic test are performed manually
on a per-channel or a per-frame (24 channels) basis.
Link diagnostic test
The link diagnostic test, also called the far end loopback
test, does not test the Meridian 1 DTI. It puts the DTI in loopback mode so a
remote loopback test can be performed on equipment at the far end.
The DTI channel or frame being tested must be disabled before performing
the link diagnostic test or call processing will be disrupted.
Remote loopback test
The remote loopback test, also called the near end
loopback test, checks the integrity of the DTI link from the Meridian 1 to the
far end. The far end must be in loopback mode before this test can be
performed.
The DTI channel or frame being tested must be disabled before performing
the remote loopback test or call processing will be disrupted.
Coordinating the tests
When a technician at the far end asks for loopback
mode on the Meridian 1, enter the following:
LD 60
DISL loop
RLBK loop
To run the remote loopback test on the Meridian 1:
1
Call a technician at the far end. Ask for loopback mode at that facility.
2
When loopback mode at the far end is confirmed, enter the following:
LD 60
DISL loop
RMST loop
shows the relationship between the remote loopback test and the
link diagnostic test.
The procedure below is for performing a remote link diagnostic test on the
DTI hardware when the DTI loop is disabled. This procedure assumes that the
testing is being run from a local DTI to a collocated DTI.
