RAD Data comm IPmux-16 Manuel D’Utilisation
IPmux-16 Installation and Operation Manual
Chapter 4 Troubleshooting and Diagnostics
Troubleshooting
4-3
4.2 Troubleshooting
The following table presents the event types as they appear on the Event Log File
and lists the actions required to correct the event (alarm) indication.
and lists the actions required to correct the event (alarm) indication.
Table 4-2. IPmux-16 Troubleshooting Chart
Fault
Probable Cause
Remedial Action
The E1/T1 equipment
connected to IPmux-16 is not
synchronized (E1/T1 level) with
IPmux-16
connected to IPmux-16 is not
synchronized (E1/T1 level) with
IPmux-16
Configuration problems
1. Check IPmux-16 port
configuration and, if
necessary, other IPmux-16
parameters.
necessary, other IPmux-16
parameters.
2. Check E1/T1 physical
connection (use loopbacks).
Slips and errors in E1/T1
equipment
equipment
• Ethernet port in switch and
IPmux-16 are not in the same
rate or duplex mode
rate or duplex mode
• Ethernet port is set to work in
half duplex mode (may cause
extreme PDV because of
collisions and backoffs)
extreme PDV because of
collisions and backoffs)
• Timing configuration is not
properly set (periodic buffer
under/overflows – bundle
connection status menu)
under/overflows – bundle
connection status menu)
• Network PDV or Lost Frames
1. Check E1/T1 physical
connection (use loopbacks)
and E1/T1 statistics.
and E1/T1 statistics.
2. Check timing settings
according to explanation in
this manual.
this manual.
3. Check switch and IPmux-16
port configuration
(negotiation, rate, duplex
mode) and check Ethernet
statistics.
(negotiation, rate, duplex
mode) and check Ethernet
statistics.
4. Check PDV introduced by
the network, and, if
necessary, increase PDVT
jitter buffer setting.
necessary, increase PDVT
jitter buffer setting.
Echo in voice
1. Check network delay and try
to decrease it.
2. Try to decrease PDVT (jitter)
buffer.