Cisco SPA525G Setup
Important: Prior to configuration of this device, kindly factory reset the modem first.
1. To enter the phone's web interface enter device's IP-address in URL bar.
To obtain the phone's IP address, press the "Menu" button (Page) and select "Network" => "CurrentIP"
2. Click Admin Login then Advance

Open "Voice" tab "SIP" and specify range of RTP ports.
RTP Port Min:1024
RTP Port Max:65536
To save changes click Submit All Changes

NAT Keep Alive Enable: Yes
Proxy: voip.syd.spintel.net.au
Register Expires: 300
Display Name: Your sip number (xxxxxx)
UserID: Your sip number (xxxxxx)
Password: Your sip password
Preferred Codec: G711a
Second Preferred Codec: G729a

To save changes click on Submit All Changes