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OpenSIPS SBC

Community Edition

The OpenSIPS SBC Community Edition is a fully functional OpenSIPS-based Session Border Controller platform designed to secure and control SIP traffic between endpoints, core SIP platforms, PBXs and PSTN carriers. It provides the core SBC functions required at the SIP network edge: topology hiding, NAT traversal, media relaying, SIP registration handling, call routing, PSTN interconnection, failover and operational monitoring.

The platform is suitable for single-tenant deployments, lab environments, proof-of-concept setups and small to medium SIP infrastructures that need a ready-to-run SBC based on OpenSIPS. See the full feature set below.

  • Topology hiding for all calls
  • NAT traversal for SIP endpoints
  • Mid-registrar support
  • Primary / failover routing across core servers
  • PSTN routing via gateways and rules
  • Provisioning web interface
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Documentation

Feature Set

SIP server
  • SIP proxy with UDP and TLS support
  • Topology hiding for all calls
  • Dialplan support for SIP user and DID formats
  • NAT traversal with automatic detection
  • Contact fixing for NAT’ed endpoints
  • Dialog management
  • Database-persistent session state
  • SIP traffic tracing and operational visibility
Registration / Core Server Integration
  • Mid-registrar support
  • Registration throttling towards the core server
  • Endpoint registration management
  • Automatic failover between core servers
Call routing
  • Routing between endpoints, core and PSTN
  • PSTN routing using dynamic routing rules
  • Gateway-based outbound routing
  • DID-based inbound routing
  • Dialplan-based SIP user and DID normalization
  • Routing failover based on destination availability
WEB interface
  • OpenSIPS Control Panel for system provisioning
  • Dashboard
  • Routing management
  • Dialog management
  • Statistics and status monitoring
  • Management Interface commands
Security / Access Control
  • SIP digest authentication for registered endpoints
  • Source-based access control
  • Blacklist filtering
  • Topology hiding of internal SIP infrastructure
  • Protection of private SIP network addressing
  • Controlled exposure of SIP services at the edge
Media Handling
  • RTPEngine integration
  • RTP media relay
  • Media anchoring between SIP networks
  • Media traversal for NAT’ed endpoints
  • Separation of SIP signaling and RTP
PSTN Integration
  • PSTN routing through dynamic routing
  • Gateway and rule-based PSTN routing
  • Support for inbound and outbound PSTN calls
  • DID format handling
  • SIP user format handling
  • Carrier / gateway failover support
Monitoring / Operations
  • OPTIONS keepalive for endpoint health monitoring
  • Call statistics for inbound and outbound calls
  • Dialog tracking
  • Persistent dialog state
  • Management interface
  • SIPSsert-based test suite

Docker architecture

The OpenSIPS SBC consists of a set of three containers:

  • OpenSIPS SIP Server
  • MySQL Database
  • OpenSIPS Control Panel
  • RTPEngine relay

All containers run on the host network, making the SBC services directly available through the host IP.

Get Started
Documentation

About us

The OpenSIPS Community Editions are official part of the OpenSIPS project. They are maintained and supervised by the OpenSIPS project team members.

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