[VoiceOps] RTP End?

Clint Mojzes clintm at ringcentral.com
Wed Sep 12 18:44:42 EDT 2012

It very well could be, however there would need to be some way to identify that frame as the last frame, like some sort of timer (previously defined in SDP), special indicator in the actual RTP frame, or the frame would need to be closely followed by a BYE. Otherwise our tool would have to arbitrarily choose a frame as the last frame. But, I had the same suspicion so I tried to induce this BYE by causing 100% packet loss on the media stream, and was not able to cause the RTP BYE.

-----Original Message-----
From: voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org] On Behalf Of Alex Balashov
Sent: Wednesday, September 12, 2012 3:37 PM
To: voiceops at voiceops.org
Subject: Re: [VoiceOps] RTP End?

How do you know it's not just the last RTP frame associated with a given direction of the stream?

On 09/12/2012 06:25 PM, Clint Mojzes wrote:

> We are using a tool called Empirix Hammer to analyze and report on our 
> network traffic. This tool as uncovered something that it calls "RTP 
> End" and I'm trying to get a better definition of what it means. I 
> haven't been able to find anything online, including RFCs etc. 
> Basically when the Hammer see this special packet, it is when a phone 
> or media gateway is tearing down a call. Logically speaking it is 
> identifying the end of a media stream, but I'm looking for a technical 
> definition. Can anyone provide any insight?
> Thanks,
> -Clint
> **
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Alex Balashov - Principal
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