Reconsituting Call State in SIP User Agents
draft-rosenberg-sip-reconstitute-00
| Document | Type |
Expired Internet-Draft
(individual)
Expired & archived
|
|
|---|---|---|---|
| Author | Jonathan Rosenberg | ||
| Last updated | 2001-07-18 | ||
| RFC stream | (None) | ||
| Intended RFC status | (None) | ||
| Formats | |||
| Stream | Stream state | (No stream defined) | |
| Consensus boilerplate | Unknown | ||
| RFC Editor Note | (None) | ||
| IESG | IESG state | Expired | |
| Telechat date | (None) | ||
| Responsible AD | (None) | ||
| Send notices to | (None) |
This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:
Abstract
In a SIP network, call and session state resides in the user agents at the edge of the network. These user agents can be elements such as gateways, conferencing servers, and media servers whose availability is important for service delivery. In order to achieve fault tolerance for these user agents, this state must somehow be replicated to backup servers. Traditionally, replication is done through direct memory copies between a primary and its backup. However, the soft-state nature of SIP re-INVITEs means that an alternate mechanism for call state replication is possible. This document proposes mechanisms for reconstituting call state in a UA through triggered re-INVITEs from a peer.
Authors
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)