Comments
en.wikipedia.org/wiki/Voice_over_Internet_Protocol
Posted by crouse
www.rfc-editor.org/rfc/rfc3219.txt
Posted by crouse
www.networksorcery.com/enp/protocol/trip.htm
Posted by crouse
In general TRIP is modeled after the BGP protocol. Messages are sent over a reliable transport protocol connection. A message MUST be processed only after it is entirely received. The maximum message size is 4096 bytes. All implementations MUST support this maximum message size. The smallest message that MAY be sent consists of a TRIP header without a data portion. TRIP is a policy driven inter-administrative domain protocol for advertising the reachability of telephony destinations between location servers, and for advertising attributes of the routes to those destinations. TRIP's operation is independent of any signaling protocol, hence TRIP can serve as the telephony routing protocol for any signaling protocol.
Posted by HamidAliKhan
The PSTN routes most of the phone calls in the world today. Why should SIP duplicate that routing capability for every POTS phone or every phone that PSTN is already set up for? TRIP allows SIP to route calls that may already be listed in other routing tables to specialized Gateways that direct the calls to the appropriate network. It uses a protocol based on the Border Gateway (BGP) that has been very successful among routers on the internet. It uses TCP port 6069 to let routers (SIP Servers) and Location Servers to talk to each other to discover appropriate routes to special gateways.
BGP allows servers to talk together to determine where the gateways are and which are more appropriate for a given call.
References:
http://www.IETF.org, RFC 3219
Posted by george99
TRIP is a policy driven inter-administrative domain protocol for advertising the reachability of telephony destinations between location servers, and for advertising attributes of the routes to those destinations. TRIP's operation is independent of any signaling protocol, hence TRIP can serve as the telephony routing protocol for any signaling protocol.
TRIP is modeled after the BGP protocol.
Messages are sent over a reliable transport protocol connection. A message MUST be processed only after it is entirely received. The maximum message size is 4096 bytes. All implementations MUST support this maximum message size. The smallest message that MAY be sent consists of a TRIP header without a data portion.
Posted by sagitraz
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