Tag Archives: linksys

Using a Cisco/Linksys SPA-504G with Asterisk and FreePBX

Below is a quick start guide for getting a Cisco/Linksys SIP handset up and running with Asterisk/FreePBX.

Both Linksys & Cisco phones have almost identical web admin setup pages but the layout and design differ slightly, setup procedures are identical for both.

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Firstly plug the phone into the network via cat5 network cable (If you have 2 switch ports beneath the phone you want to use the port marked “SW”, don’t bother routing through the PC…it wont work well) and connect the power supply and plug in.
The phones get configured via a web interface, to do this you must first know the IP address of the phone. Shown below.

cisco spa504g config button

  •  Then Press “9” for network options
  • See where it says “Current IP” and type it into your web browser