RAD Data comm IPmux-11 Manuel D’Utilisation

Chapter 6  Troubleshooting and Diagnostics 

Installation and Operation Manual 

6-16 Troubleshooting

 

IPmux-11 Ver. 2.00 

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.  

E1/T1 equipment 

connected to IPmux-11 is 

not synchronized with 
IPmux-11. 

Configuration or physical layer 

problems 

1.  Check cables and physical 

connectivity. 

2. Check IPmux-11 E1/T1 

configuration and, if necessary, 

other IPmux-11 parameters. 

3.  Check E1/T1 physical connection 

(use loopbacks). 

Slips and errors in E1/T1 

equipment 

•  Ethernet port in switch and 

IPmux-11 are not in the same 
rate or duplex mode 

•  Ethernet port is set to work in 

half duplex mode (may cause 
extreme PDV because of 

collisions and backoffs) 

•  Timing configuration is not 

properly set (periodic buffer 

under/overflows shown on IP 

channel status menu) 

•  Network PDV or lost frames 

1.  Check E1/T1 physical connection 

(use loopbacks). 

2.  Check timing settings according to 

explanation in this manual. 

3.  Check switch and IPmux-11 port 

configuration (negotiation, rate, 
duplex mode). 

4.  Check PDV introduced by the 

network, and, if necessary, increase 
PDVT jitter buffer setting.. 

Echo in voice 

High delay in voice path 

1.  Check network delay and try to 

decrease it. 

2.  Try to decrease PDVT (jitter) buffer.