Session Initiation Protocol (SIP)

Testing the Connection

Asterisk provides basic testing services to determine if the extension is working correctly.

Setting up a SIP phone extension

How to get a Snom 190 VOIP phone working with Asterisk PBX using FreePBX

Setting up a SIP softphone extension - Turn your PC into a VOIP phone using the free X-lite softphone application

No Asterisk CLI SIP Help?

How to troubleshoot your configuration when there is no Asterisk CLI SIP help options showing.

Troubleshooting SIP Problems

If you hear the dreaded "All circuits are busy now. Please try your call later.", analyzing the SIP messages will give you clues to the problem. Here's more information than you need.

Connecting two Asterisk PBX servers

The time has come to connect two PBX in a Flash servers together. There's a number of ways to do it.

Configuring a firewall to pass external VOIP traffic
    You have Asterisk configured - how do you allow external VOIP traffic to pass through your firewall to the local network?

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Copyright December, 2012 Eugene Blanchard