sipp

sipp pcap play packets sent from port '0' if i literally mention media port in scenario file

I am using sipp pcap play to send media from one particular port after sending 183 Session In Progress response. I can achieve this using -mp parameter. But After sending 200 OK, I want to send media from different media port, which I can't as if I mention media port in scenario file, sipp sends media packets from port '0'.

How to solve this?

Solution

  • In Media Description parameter,

    183 Session Progress, you can give like this in sipp file. 

    m=audio [media_port+2]  RTP/AVP 18

    For instance, your running a sipp file with -mp 7896 media port, sipp file run play pcap file with 7898 port.

    200 OK, Similarly 

    m=audio [media_port+4]  RTP/AVP 18

    Here also, sipp file play a pcap file with 7900 port.