What are the key OpenSIPS modules used in VoIP systems?

Some of the key modules in OpenSIPS include registrar, dispatcher, auth, usrloc, and tm. These modules are behind core VoIP features like SIP registration, routing, and authentication.

How do I choose the right OpenSIPS modules for my deployment?

To know which OpenSIPS module to choose, start with your use case (PBX, SBC, etc.) and enable only the modules that fit. Overloading modules can hurt the performance of your VoIP system.

What’s the difference between a VoIP feature and an OpenSIPS module?

VoIP features (like call forwarding or NAT traversal) are built by combining OpenSIPS modules like tm, dialog, nathelper, and acc.

How do OpenSIPS modules enable advanced VoIP features?

VoIP features like call routing, load balancing, or failover are built by combining modules like drouting, dispatcher, and tm. It’s all modular, so you only load what you need.

Which OpenSIPS modules support business VoIP features?

Modules like b2b_logic, presence, dialog, and uac are commonly used for business VoIP features such as call transfer, voicemail integration, and presence-aware routing.