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SKINNY protocol decoding

asked 2020-04-17 02:18:15 +0000

eSergio gravatar image

updated 2020-04-17 02:20:28 +0000

Hi. I have file with VoIP, captured in Wireshark. There is couple SKINNY records. What I need to do to listen this? I can't convert it to RTP. I tried look in the internet but couldn't find anything. Thank you!

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https://ask.wireshark.org/question/15...
Have you enabled RTP over UDP in the RTP decode?

Chuckc gravatar imageChuckc ( 2020-04-17 02:42:46 +0000 )edit

Yes. RTP over UDP is enabled but when I am trying decode SKINNY into RTP everytime I am receiving TCP, not UDP. "Telephony -> RTP -> Stream Analysis" is not active. What problem it could be? Thank you!

eSergio gravatar imageeSergio ( 2020-04-17 23:13:05 +0000 )edit

IP Phone to IP Phone Where in the diagram are you making the capture?

Chuckc gravatar imageChuckc ( 2020-04-18 01:36:35 +0000 )edit

Between two subnets inside one network.

eSergio gravatar imageeSergio ( 2020-04-19 01:01:05 +0000 )edit

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answered 2025-11-20 12:47:28 +0000

gielo gravatar image

Just before we start, make sure you have the following enabled to auto classify (decode) UDP as RTP when using Wireshark. In Wireshark, select "Analyse" tab, then "Enabled Protocols" then search rtp and ensure all check boxes are checked., then OK.

Skinny is a proprietary Cisco Telephony protocol. The Skinny protocol is associated with TCP port 2000. Skinny is only the Signalling, the voice is still carried by RTP. So if you want to listen to the RTP you need to select the rtp packets from within Wireshark. Select "Telephony" Tab then "RTP" then the required stream you want to listen to. Then play

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Asked: 2020-04-17 02:18:15 +0000

Seen: 981 times

Last updated: Nov 20