How to do a packet capture on the VOIP-500/VOIP-600 Series IP Call Stations using tcpdump?

How to do a packet capture on the VOIP-500/VOIP-600 Series IP Call Stations using tcpdump?

1.    Login to the VOIP-500/VOIP-600 Call Station console either by using a Serial cable or through SSH.
2.    Navigate to the /flash directory- root:/> cd /flash
3.    Run the command to start capturing packets- root:/flash> tcpdump -w call1.pcap
4.    Place the test call. End the call. OR Run the desired test for which the capture is required.
5.    Press ctrl-C key on the keyboard to stop the trace.
6.    Run command to view all the available packet captures- root:/flash>ls *.pcap

 -rw-r--r--    1 root     root       341634 May  5 14:19 call1.pcap

 Retrieve the files using the following FTP commands and email the call1.pcap, db.dat and phonemode files to Talkaphone support.

 root:/flash>ftpput <ftp server IP> -u username -ppassword call1.pcap call1.pcap