NETW 250 Week 6 iLab Troubleshooting VoIP Traffic

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NETW 250 Week 6 iLab Troubleshooting VoIP Traffic

Examining VoIP Call Streams

Answer the following questions based on the iLab6-Capture1.pcap file.

  • Which protocol was used for the telephone to attempt to register with the PBX?
  • What is the type or name of the message or request that is sent by the telephone to the PBX?
  • The TCP or UDP port that a VoIP protocol uses must be kept open in a firewall so that the traffic can pass through. In this same file, what TCP or UDP port is used in Frame 1?
  • The exchange between the telephone and PBX specifics a realm they belong to. What is the name of this realm?

Answer the following questions based on the iLab6-Capture3 file.

  • In the file, SIP creates a connection between the two telephones and RTP carries the call session itself. How many frames are required by SIP to just set up this call?
  • In the file, SIP creates a link between the two telephones and RTP carries the call itself. How many frames are required by SIP to just end the call?

Answer the following question based on the iLab6-Capture4.pcap file.

·The RTP protocol is defined in an IETF RFC document; it specifies how RTP operates. What is this RFC?

Answer the following questions based on the iLab6-Capture7 file.

  • The RTCP protocol appears in frame 529. What does RTCP stand for?
  • In the capture file, the RTCP protocol appears several times. What is the function of RTCP?
  • In the capture file, another protocol appears occasionally with SIP. The frames show it as SIP/SDP. What does SDP stand for?
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