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« Too unstable for me...  
Andromeda451

join:2004-04-08
Queen Creek, AZ

UDP not TCP

Isn't VOIP based on RTP wrapped up in a UDP wrapper? So a TCP ping test may not reflect the situation accurately?
permalink · 2004-08-10 17:54:46 · Reply to this
tkdslr

join:2004-04-24
Pompano Beach, FL
·Speakeasy

Re: UDP not TCP

said by Andromeda451 See Profile:
Isn't VOIP based on RTP wrapped up in a UDP wrapper? So a TCP ping test may not reflect the situation accurately?
SIP uses both UDP and TCP.. ports 5060 & 5061
It can use either protocol. It will use TCP when UDP fails.
see »www.vonage.com/corporate/press_n···_04_17_0

In a route looping scenario, after UDP attempts will fail, and the TCP fall back will also fail (in an identifiable pattern).

"Ping", generally uses an (ICMP) packet, which uses the IP layer of the TCP&UDP/IP protocol.
permalink · 2004-08-11 04:06:37 · Print · Reply to this
Forums » Another Vonage Outage?« Too unstable for me...  

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