Medias Mediatrix 1204, Reference Manual

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Chapter 29 - Troubleshooting Calling Issues
282 Mediatrix 1204
D
ESCRIPTION
: Mediatrix Technical Support personnel asked me to enable the PCM traces. How do I do it?
P
OSSIBLE
C
AUSE
: PCM traces are an efficient tool to identify problems with:
• Echo in your network
• DTMF signals
• Caller ID signals
• Fax signals (or false Fax detection)
• Message Waiting Indicator signals
• Any other analog signal
S
OLUTION
: Do the following:
a. Enable the PCM traces by setting the mxDebugPcmCaptureEnable MIB variable to enable .
b. Set the destination IP address for the PCM traces in the mxDebugPcmCaptureIpAddress MIB
variable.
• This IP address does not have to be listening on ports 5001/2 - 6001/2, as it is easy to
filter out ICMP “port unreachable” messages afterwards.
• The PCM traces destination must be set so it can be recorded in an Ethereal capture
on your network, normally sent to the PC doing the capture.
For more details on the PCM traces, refer to Technical Bulletin 0598 - PCM Traces .
Calling Issues
The following are general calling issues you may encounter.
D
ESCRIPTION
: Impossible to make a call.
If the following happens:
Dial tone present.
Power LED lit.
LAN LED lit.
P
OSSIBLE
C
AUSE
: Network communication is not working.
S
OLUTION
: Check that:
• The LAN cable is securely connected to the Mediatrix 1204 and to the network
connector.
• You did not connect a crossover network cable.
P
OSSIBLE
C
AUSE
: Configurable parameters of the Mediatrix 1204 are not set properly.
S
OLUTION
: Refer to this manual for a complete description of the configurable Mediatrix 1204
parameters.
Caution:
Enabling PCM traces on the Mediatrix 1204 . You must disable G.723 and enable the G.726
codecs to load the PCM code into the Mediatrix 1204.