Voip Redundancy
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[[Image:VoIP Redundancy 0.png|400px|VoIP Redundancy Topology]] | [[Image:VoIP Redundancy 0.png|400px|VoIP Redundancy Topology]] | ||
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== Signaling Redundancy == | == Signaling Redundancy == | ||
In the above example, we have configured two [[NAP]] Network Access Point that reaches the same SIP destination. In the event the ethernet interface VOIP0 went down, the <u>'''''NAP A'''''</u> would become unavailable, and thus routing would take place using <u>'''''NAP A''''''</u>. | In the above example, we have configured two [[NAP]] Network Access Point that reaches the same SIP destination. In the event the ethernet interface VOIP0 went down, the <u>'''''NAP A'''''</u> would become unavailable, and thus routing would take place using <u>'''''NAP A''''''</u>. | ||
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== Media Redundancy == | == Media Redundancy == | ||
The [[NAP]] is also associated to the media by assigning an UDP port range for the RTP. When [[NAP]] is unavailable at the signaling level, the assigned RTP ports aren't being used. In the above example, if the <u>'''''NAP A'''''</u> then all new outgoing calls would then be using VOIP1 ethernet interface. | The [[NAP]] is also associated to the media by assigning an UDP port range for the RTP. When [[NAP]] is unavailable at the signaling level, the assigned RTP ports aren't being used. In the above example, if the <u>'''''NAP A'''''</u> then all new outgoing calls would then be using VOIP1 ethernet interface. | ||
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| + | == Routing == | ||
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| + | In order for the routing engine to use both <u>'''''NAP A''''</u> and <u>'''''NAP A'''''</u>, we need to create one route for each [[NAP]]. All routes using unavailable [[NAP]] are ignored by the routing engine when routing takes place. | ||
| + | [[NAP]] availability is a fetaure of [[Scriptable Routing Engine]]. | ||
Revision as of 16:30, 20 July 2010
Redundancy of both RTP and SIP can be achieved by configuring one NAP per VoIP interface for a specific remote proxy.
Signaling Redundancy
In the above example, we have configured two NAP Network Access Point that reaches the same SIP destination. In the event the ethernet interface VOIP0 went down, the NAP A would become unavailable, and thus routing would take place using NAP A'.
Media Redundancy
The NAP is also associated to the media by assigning an UDP port range for the RTP. When NAP is unavailable at the signaling level, the assigned RTP ports aren't being used. In the above example, if the NAP A then all new outgoing calls would then be using VOIP1 ethernet interface.
Routing
In order for the routing engine to use both NAP A' and NAP A, we need to create one route for each NAP. All routes using unavailable NAP are ignored by the routing engine when routing takes place. NAP availability is a fetaure of Scriptable Routing Engine.
