opensips vs Kamailio

Struggling to choose between opensips and Kamailio? Both products offer unique advantages, making it a tough decision.

opensips is a Network & Admin solution with tags like sip, proxy, b2bua, voip, signaling, session-management.

It boasts features such as SIP signaling, Presence and instant messaging, Load balancing and failover, NAT traversal, Call routing and policy enforcement, Media handling and transcoding, Accounting and billing, Integration with various databases and pros including Open source and free, High performance and scalability, Modular and extensible architecture, Supports wide range of protocols and standards, Active community support.

On the other hand, Kamailio is a Social & Communications product tagged with sip, voip, realtime-communications, call-routing, policy-enforcement, media-handling, accounting, authorization, presence, instant-messaging.

Its standout features include SIP proxy and registrar server, Presence and instant messaging, Load balancing and failover, NAT traversal, Media relaying, Accounting and billing, Flexible routing and policy enforcement, Modular architecture with extensive API, and it shines with pros like Open source and free, Highly scalable and performant, Rich feature set for VoIP, Active community support, Modular and customizable, Supports wide range of SIP devices and clients.

To help you make an informed decision, we've compiled a comprehensive comparison of these two products, delving into their features, pros, cons, pricing, and more. Get ready to explore the nuances that set them apart and determine which one is the perfect fit for your requirements.

opensips

opensips

OpenSIPS is an open source SIP proxy and B2BUA server used to build and deploy SIP platforms and VoIP infrastructures. It provides advanced routing, signaling, and session management capabilities for building large scale SIP networks.

Categories:
sip proxy b2bua voip signaling session-management

Opensips Features

  1. SIP signaling
  2. Presence and instant messaging
  3. Load balancing and failover
  4. NAT traversal
  5. Call routing and policy enforcement
  6. Media handling and transcoding
  7. Accounting and billing
  8. Integration with various databases

Pricing

  • Open Source

Pros

Open source and free

High performance and scalability

Modular and extensible architecture

Supports wide range of protocols and standards

Active community support

Cons

Steep learning curve

Requires expertise to setup and configure

Limited graphical user interface

Need to integrate external components for full-featured system


Kamailio

Kamailio

Kamailio is an open source SIP server used for VoIP and real-time communications. It handles call routing, policy enforcement, media handling, accounting, and authorization with support for presence and instant messaging.

Categories:
sip voip realtime-communications call-routing policy-enforcement media-handling accounting authorization presence instant-messaging

Kamailio Features

  1. SIP proxy and registrar server
  2. Presence and instant messaging
  3. Load balancing and failover
  4. NAT traversal
  5. Media relaying
  6. Accounting and billing
  7. Flexible routing and policy enforcement
  8. Modular architecture with extensive API

Pricing

  • Open Source

Pros

Open source and free

Highly scalable and performant

Rich feature set for VoIP

Active community support

Modular and customizable

Supports wide range of SIP devices and clients

Cons

Steep learning curve

Requires expertise to setup and manage

Not as user friendly as commercial options

Limited official support and documentation