OpenSIPS vs FreeSwitch: What to Choose for Scalable VoIP Deployment?

Updated on: 18 May, 2023
OpenSIPS vs FreeSwitch: What to choose for Scalable VoIP Deployment?

If you only have a small number of incoming and outgoing calls setting up a single media server like FreeSWITCH is not too difficult. However, once the number of incoming and outgoing calls reaches four figures, you need to consider another server like OpenSIPS. Let’s read this article to understand the advantages and disadvantages of both technologies. Now, the first thing is to understand what are FreeSWITCH and OpenSIPS.

What is FreeSWITCH?

FreeSWITCH is a design media server that offers fax, voice calls, voicemail, text-to-speech, conferencing, and others. FreeSWITCH is a highly dependable and well-liked Softswitch that can manage hundreds of concurrent calls while maintaining good call quality.

Some typical capacities that FreeSWITCH uses include:

  • PBX (Office phone system)
  • Softphone
  • Class 5 Softswitch (Telephone carrier)
  • Application servers such as voicemail, conferencing, IVR

FreeSWITCH is highly flexible and can be used in any way you imagine. The default setup displays a fully functional PBX with a wide range of applications.

Also Read: FreeSWITCH Development Guide

For what is FreeSWITCH suitable?

As a media server is precious, the ability to easily configure complex call scenarios through XML and navigate IVR menus as Auto Attendance or Voucher recharge is unique. But along with all that, you can register proxy media and users. Concisely, you can use it as a “black box does it all.”

What is OpenSIPS?

OpenSIPS is a very reliable, adaptable SIP proxy that enables the setup of a load-balanced SIP, addresses complex NAT circumstances, and handles SIP, signaling, and registrations.

When handling many requests and responses, such as with SIP signals and registrations, OpenSIPS is especially useful. It can handle any request or response and makes it possible to translate between two SIP server versions that are incompatible. OpenSIPS solution uses network operators, businesses, and telecom operators because of these beneficial capabilities. It is a multipurpose, multifunctional SIP server that relates to signaling and uses:

  • A switch
  • Router
  • Registrar
  • Application server
  • Gateway
  • Load-balancer

OpenSIPS solutions are incredibly scalable, offer an application interface and module for efficient application design, and have a high degree of flexibility that enables transitional throughput of up to thousands of calls per second.

For what is OpenSIPS suitable?

When handling large volumes, such as more than a thousand registered users, the OpenSIPS solution is frequently employed. OpenSIP consulting services handle the requests and responses and direct handling of the SIP headers, recommendations, and answers, allowing translation between two incompatible versions of SIP. This capability is crucial when you have SIP implementations from several vendors that might not work together. The aforementioned is vital if your system intends to support several future VoIP vendors.

Although it is not intended to support audio natively, and can readily solve with the aid of an RTP proxy. Particularly the module in charge of it, which is very tweakable and enables optimization of the media call flow between the endpoints, does NAT traversal excellently (better than FreeSWITCH). Voicemail, IVR, voice recognition systems, and TTS would not build on the OpenSIPS platform.

Why use OpenSIPS Development over FreeSWITCH?

Some users rely entirely on FreeSWITCH and eventually use OpenSIPS development only as a load balancer. FreeSWITCH has several functions that overlap with OpenSIPS, but FreeSWITCH has more. Though FreeSWITCH provides many options, are you required to use them in every call? No, because of this, you should only use FreeSWITCH when essential.

OpenSIPS vs FreeSwitch: What is better?

The functions of OpenSIPS and FreeSWITCH are genuinely different. Let’s discuss OpenSIP vs. FreeSwitch below:

High-volume communications

OpenSIPS solution can serve as a load-balancing device. On the network, it can route traffic in the desired direction. It compares to a traffic cop on a highway who directs traffic to various routes from one side of the road to the other.

In this case, FreeSWITCH can be considered a stadium or shopping center where traffic goes. As a result, the OpenSIPS solution can route incoming traffic to various FreeSWITCH nodes. OpenSIPS performs great with NAT traversal, which is simple to set up and enables media optimization between the endpoints.

Load Balancer

OpenSIPS development and FreeSWITCH work well and can be applied to accomplish two distinct goals. The OpenSIPS can manage a high volume of signals as a load balancer. Traffic redirects to several FreeSWITCH nodes.

As a result, you can select any system based on your needs. Many built-in functions in FreeSWITCH can be used so that OpenSIPS consulting services meet your needs.

This comparison between the two helps you to decide which one we can use for scalable deployment. FreeSWITCH focuses on various communications capabilities, including voice, fax, voicemail, conferencing, IVR, and TTS. Still, the OpenSIPS solution has a straightforward design that offers superior performance and stability.

Which combination work best for Scalable VoIP Deployment?

  • OpenSIPS development has more outstanding performance and stability than FreeSWITCH because OpenSIPS architecture is more straightforward and has fewer functionalities.
  • OpenSIPS solution contains a processing script with lightweight instructions that can handle hundreds of calls per minute in a single thread. On the other hand, FreeSWITCH starts a thread for each call, connects to it, and continues monitoring it.
  • If you want performance and consistency, you should create a system of well-integrated parts and work as efficiently as possible within their intended parameters. The Swiss-cheese method of FreeSWITCH would result in a system that does its function but has extra overhead, is less scalable, and has other drawbacks.

Also Read: Asterisk or FreeSWITCH – Which One To Choose?

What do we comprehend?

OpenSIPS solution manages SIP registrations, new calls, and call hangups at any time. On the other hand, FreeSWITCH handles active calls at any time. FreeSWITCH deletes its thread for that call from memory as soon as it finishes.

It is preferable to create a cluster of FreeSWITCH that is load-balanced by OpenSIPS when PBX capability is required and the volume of incoming calls is significant. Assigning more and more duties to OpenSIPS and its support modules, such as billing, display translations, and SIP registrations is a good idea for deployments that carry out on a vast scale.

Closing Words

For systems we use mainly as PBX, you better deploy a cluster of Freeswitch, load balanced by OpenSIPS. You should count on OpenSIPS development to do most of the tasks for large-scale deployments and involve Freeswitch only if necessary. However, at Ecosmob, we offer both OpenSIPS consulting services and FreeSWITCH development services at an affordable rate and with great assistance. You can reach us; our executives will always be available for your help.

Recent Posts