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Diagnostic tools
The R2MFC MBM has three diagnostic settings and two loopback settings available to help with
the troubleshooting process. When the R2MFC MBM is running in diagnostic or loopback mode,
the signals from the BCM to the CO, or from the CO to the BCM, can be intercepted by placing
diagnostic equipment in the bantam jacks on the front of the R2MFC MBM. This allows the
external MFCR2 link, or the internal E1, to be checked for communication errors. The signal can
be traced from start to finish, helping to determine the source of the errors.
See
Table 10
for a description of the diagnostic and loopback modes.
Table 10 Diagnostic and loopback modes
Mode
Diagnostic Mode 1
Diagnostic Mode 2
Diagnostic Mode 3
Loopback mode 1
(continuity mode)
Loopback mode 2
(card edge loopback)
Setting the R2MFC MBM to diagnostic mode
The R2MFC MBM is placed in diagnostic or loopback modes by setting the Config DIP switches
in either the diagnostic or loopback position. Perform the following steps to set the R2MFC MBM
into either diagnostic or loopback mode:
1
Set the Config DIP switches to the desired diagnostic or loopback mode while the R2MFC
MBM is still powered up. See
settings," on page
The selected diagnostic or loopback mode becomes active five seconds after the last DIP
switch change. The last country configuration stays in effect until a restart occurs.
2
Perform desired testing.
3
Reset the DIP switches back to the appropriate country code after testing has been completed
so that the correct country code is read upon a restart.
Warning: Restarting the R2MFC MBM, while the Config DIP switches
are in a diagnostic or loopback mode, causes the R2MFC MBM to start
up in the diagnostic or loopback mode with the default country setting of
Mexico config 1.
Description
Routes the E1 transmit signal from the BCM through the
R2MFC MBM out to the bantam jack.
Routes the E1 transmit signal from the CO through the
R2MFC MBM out to the bantam jack.
Routes the E1 received signal from the BCM out to the
bantam jack without any interaction with the R2MFC MBM.
Routes the E1 signal received from the CO back out to the CO
without any interaction with the R2MFC MBM.
Routes the E1 tranmitted signal from the BCM through the
R2MFC MBM and back to the BCM.
See Appendix B, "Diagnostic and loopback DIP switch
109.
R2MFC Media Bay Module Installation and Configuration Guide
Chapter 6 R2MFC MBM maintenance
63
Call
Availability
Available to
process calls
Available to
process calls
Available to
process calls
Not available to
process calls
Not available to
process calls
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