Content-Type: application/sdp
      v=0
      o=- 3441953879 3441953879 IN IP4 192.168.0.15
      s=pjmedia
      c=IN IP4 192.168.0.15
      t=0 0
      m=audio 4004 RTP/SAVP 0 101
      a=rtpmap:0 PCMU/8000
      a=rtpmap:101 telephone-event/8000
      a=fmtp:101 0-15
      a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:D4Mf5fIPqxwse/lLrVc2XhLk7NSL6JI0k0Jps4Br
    ]]>