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Cisco SPA504G Setup Guide

Setup Guide for Cisco SPA504G, 508G, 509G, 512G

Before you begin, ensure that you've created your extension in the My Account Portal, To retrieve the details of an existing extension, or create a new extension, login to the My Account Portal and select PBX Extensions or SIP Trunks from the menu, depending on your service type. If you're creating a new extension, click the Add Extension button, fill in the details and click Save. For additional information on creating an extension, please see Portal Guide - PBX Extensions and Sip Trunks

Find the extension number you're configuring, then click Edit.

Take note of the following fields, highlighted in the image below, as you'll need these to setup the device. 

  • Register Username: This is the full username, not the short Ext No.
  • SIP Proxy: The server you'll be connecting to.
  • Re-Register Interval: Defines how often your device should check in.
  • Password: The extension's password

Note that if the extension is already configured on a device, you'll need to reconfigure, power down or factory reset the currently connected device before the required information will be displayed.

Note: If your phone has been used with another provider in the past, please factory reset it before continuing. To do so, on the handset press Menu and select Factory Reset. Press OK when prompted and the phone will reset.

To configure a SPA series phone to your MaxoTel service, first retrieve the IP Address so that you can log into the 'Web Configuration' via your computer. To do so on the handset, press the Menu key, then choose Status and Network Status and enter The IP Address into your web browser

Once you are in the Web Configuration click on 'Admin Login' at the top right and enter your password if prompted.

Choose Ext 1, then set the following fields

Line Enable: Yes

NAT Mapping Enable: Yes

NAT Keep Alive Enable: Yes

Update the fields identified below, copying the Register Username, SIP Proxy and Password from the Configure Extension box as required:

Proxy: SIP Proxy (usually or

Register: Yes

Register Expires: 120

Display Name: Extension Name

User ID: Register Username

Password: Extension Password

Use Auth ID: Yes

Auth ID: Register Username

On the Phone tab, set the Voice Mail Number to 50002.

NBN Changes

If your connection is on the NBN, and you're experiencing issues receiving faxes, it may be necessary to change the NBN traffic class of your fax calls. There are two options for traffic classes below - if you're experiencing issues with one, please try the other.

To access this setting, navigate to Voice > Line 1. The fields are in the Network Settings section.

TC1 - High priority, but limited bandwidth

SIP ToS/DiffServ Value: 0xb8

RTP ToS/DiffServ Value: 0xb8

TC4 - Lower priority, with all available bandwidth

SIP ToS/DiffServ Value: 0x68

RTP ToS/DiffServ Value: 0x68

Once complete, choose Submit All Changes and the phone will reboot. Your phone is now setup and ready for use. If you experience any issues, please Submit a ticket online or call support on 1800 12 12 10.

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