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This section will provide introduction to Sangoma SBC Call Routing

Call Routing Configuration Options

Sangoma SBC provide three interfaces call routing interfaces

  • WebGUI Call Routing
    • Default configuration method
  • Advanced XML file call routing
    • One or more XML configuration files can be used to store call routing information
    • Designed for advanced users.
  • Remote Database Call routing
    • For each call SBC requests routing information from centralized database.

What is call routing

Call routing is the process used to route telephone calls across a telephony network.
The process is the same whether calls are made between two phones the same locality, or across two different continents.

Three concepts to call routing

  • Condition
    • The outcome this routing rule is addressing.
    • The condition statement is used to determine how the call will be dealt if the rule turns out to be true or false.
    • Example:
  • Action to be performed if true
    • What action will be performed if the condition is found to be true.
    • Example: bridge to a different SIP trunk.
  • Action to be performed if false
    • What action will be performed if the condition is found to be false.
    • Example: send the originator a 503 service unavailable message.

Call flow through Sangoma SBC

  • Call routing profile is bound to a Sangoma SBC Profile
  • An incoming call is processed by a Sangoma SBC Profile
  • SBC Profile evokes a Call routing profile
  • Call routing profile determines an action to take based on incoming call
    • Bridge to another SIP Profile, SIP Trunk
    • Hangup
    • Transfer

Sangoma SBC Call  Routing Architecture

  • Routing rules are created in order to direct calls received from one interface, and bridge it out to the next interface.
  • SIP profiles or SIP trunks are used to bridge calls.
  • Routing rules can be as simple as bridging between trunks, or as complicated as choosing from a different carrier due to costs of routing.

Call Routing Subtopics

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