[Work Notes] SIP Test of FreeSwitch by FSClient

In previous articles, I tried to build the pjsip package, but it’s hard to verify that the package works correctly without a solid understanding of SIP. So I decided to get more familiar with how SIP works by setting up a switch. There are two popular choices: Asterisk and FreeSwitch. I chose FreeSwitch because pre-compiled binaries for Windows 7 are already available.

http://wiki.freeswitch.org/wiki/Installation_Guide

After installation, remember to allow the application through the firewall. Since this is just for testing, I ran FreeSwitch with the default configuration.

When the switch is ready, we can choose a softphone for testing. Here are the available softphones:

http://wiki.freeswitch.org/wiki/Softphones

I chose FSClient on Windows 7.

Set the device configuration:

Add a test account and register to FreeSwitch:

Then we can use FSClient to do the test. More information in the getting started guide: http://wiki.freeswitch.org/wiki/Getting_Started_Guide

Some common extensions for testing:

• 1000, 1001, ..., 1019 — Generic SIP extensions
• 5000 — Demo IVR (requires sounds and music files to be installed)
• 9195 — Five second delay echo test
• 9196 — Standard echo test
• 9197 — Milliwatt extension
• 9198 — Tetris extension for demo TGML generation
• 9664 — Music on hold (requires music files to be installed)

It’s easy — just dial it.