multidump — run
    multiple rtpdumps simultaneously
  
    | multidump | [ -Fformat]
      [-tminutes]
      [-xbytes]
      basename
      [address]/port
      [...] | 
multidump runs multiple
    rtpdump(1)
    sessions simultaneously. For every
    [address]/port, one
    rtpdump(1)
    process is started accordingly. The dumps are stored in
    basename.*, numbered from
    basename.1 increasingly. The
    -F, -t and
    -x flags, if present, are passed to every
    rtpdump(1)
    process.
If the -t flags is used,
    multidump will wait for all the
    rtpdump(1)
    processes to finish. Otherwise, multidump will need
    to be killed with a signal, in which case it kills the running processes as
    well.