Driver Overview Statistics

When debugging Sangoma boards, wanpipe driver, Asterisk and/or Freeswitch, one always has to start debugging wit lowest layer.

• As per the OSI Network Model
  Starting with the Lowest layer and move up to the Highest

  • Lowest layer is the Physical layer (T1/E1)

  • Highest layer is the Application (Asterisk/FreeSWITCH/Custom App)

Statistics

Framer Statistics

• Command: wanpipemon -i w1g1 -c Ta

• Note: Can be run for any wanpipe  interface listed in "ifconfig"  (refer to Glossary below)

• More information is located on Wanpipe Alarm Statistics page

Errors  

• Rx Level 

  • must be -2.5db 

  • If Rx Level is not -2.5db there is a cable issue

• Line, Bit and Out of frame errors.

  • Make sure they are not incrementing. 

  • If incrementing, the clock on the T1/E1 line is bad.

  • One can try to configure wanpipe port to MASTER clock.

  • However the telco is suppose to provede the clock

Echo Canceler Statistics

• Command: wan_ec_client wanpipe1 stats 

• Note: Can be run for any started wanpipe device listed in "wanrouter status" 

Errors

• H.100 errors

  • The echo canceler is expecting a clean stable clock. 

  • The echo canceler clock is supplied by the T1/E1 line.

  • If the clock coming from the line is not up to spec the echo canceler chip will increment the H.100 errors. 

FPGA Sync Errors

• Command: ifconfig w1g1  

• Note:   Can be run for any wanpipe  interface listed in "ifconfig"  (refer to Glossary below)

Error

• Look for rx and tx overrun errors

  • Make sure they are not incrementing

• If the FPGA detects an out of sync condition, the DMA buffers will be flushed and DMA process restarted.

• This is critical in order to keep T1/E1 DS0 synchronization. 

• Otherwise, timeslot shifting could occur, where timeslot 1 data is on channel 5, etc.... 

• This condition will also be logged in system syslog file. (usually located in: /var/log/messages) 
   

Fifo Overrun Errors

• Overrun statistics are described in Wanpipe Debugging Section

Glossary
 

Wanpipe Interfaces

Wanpipe driver registers a wanpipe network interface for every wanpipe port/span created.
Wanpipe interface starts with letter "w"

Eg: w1g1  - wanpipe1 group1
      w2g1  - wanpipe2 group1  .
 

• Wanpipe network interfaces show io and error statistics.

• IO statistics include: rx and tx data packets

• Error statistics include: dma errors, overruns  and packet corrupts.