Scott Laird wrote:

On Apr 5, 2004, at 12:10 PM, Olle E. Johansson wrote:


Members of the IETF added information on the to-be-standardized standard,
meaning that SIP with TLS over TCP will be mandatory. We need to start working
on TCP and TLS support.


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?
SIP over TCP means signalling over TCP. Media is still usually RTP/UDP.
SIP over TCP and TLS authenticates both ends and may also protect the
signalling with encryption.

SRTP protects RTP/UDP media with encryption.

There are concerns that sending positioning within SIP/UDP will reveal
private detailes, like position. Hence the encryption requirement.

The position data needs to be given by the ISP in DHCP configuration.

/O
_______________________________________________
Asterisk-Users mailing list
[EMAIL PROTECTED]
http://lists.digium.com/mailman/listinfo/asterisk-users
To UNSUBSCRIBE or update options visit:
  http://lists.digium.com/mailman/listinfo/asterisk-users

Reply via email to