James Golovich wrote:

On Mon, 5 Apr 2004, Scott Laird wrote:



Could someone explain to me why anyone in their right mind would ever want to run VoIP (or any lossy real-time data) over TCP? Unless I'm missing something, the effects of packet loss would be almost perfectly pessimal. Every time you lose a packet, the receiver stalls and then can't catch up, so you get horrifically huge delays. Does it actually gain something for anyone doing voice or video?


The RTP would still be UDP.  Just the SIP part (call signaling) would be
TCP.  SIP can be TCP or UDP, many implementations (including asterisk)
support only UDP.  TCP for SIP (especially with TLS) will reduce the risk
of a mitm attack.

...and SIP over TCP is a requirement in the SIP RFC...


/O
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