Redundancy and high availability

Ali Pey

Sr. Software Eng Architect

Wed Oct 24, 2012

Cloud Services for Business

• eFax®• eVoice®• FuseMail®• Campaigner®• KeepItSafe®• Onebox®• www.j2.com

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Outline

• Asterisk Deployments• Proxy Servers and Redundancy• Registration, Routing, Manipulation and

Nat traversal• Questions?

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Asterisk Deployment – SIP Phones

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SIP Trunks

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Analog/Digital Cards/GatewaysSingle point of failure

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Two asterisk servers and one proxy server

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Two Asterisk – Two proxy servers

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Final Diagram

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Proxy Servers (SBCs)

• Open Source vs. Commercial• OpenSIPS vs. Kamailio• OverSIP (Ruby, WebSocket)• Performance – Proxy Server– Asterisk Server

• Reliability• Media Proxy• Management Interface

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Proxy Servers

• Registrar Server• Call Routing (Rules, Priorities, LCR & Reporting)• NAT Traversal• Security• SIP Signaling, Codec and Digit Manipulation• Load Balancing• Failure detection and re-routing• Scripting

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Installation and configuration

• Linux• Open Source• Configuration and Routing script• Modules• Database

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Modules (over 100 modules)

• SIP Clients related modules:– Registrar Server– Authentication– Presence Server– Instant messaging, Jabber, Json, SMS– NAT Traversal– Back to Back User Agent (topology hiding)– Database (mysql, oracle, odbc, postgres)

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Modules

• Trunks and Routing– Dynamic Routing (Prefix base rules, priority,

time, distribution, drain mode, failure detection and re-routing)

– Load Balancer – Dial Plan– SIP MSG OPS– NAT Traversal– TLS– XMPP (SIP to XMPP Gateway)

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Modules

• Utilities– Rate Limit– Statistics– SNMP interface– SIP Trace– SIP Capture– Pike – Flood detector– Perl

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Title

• Bullets

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Questions?

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