ZyXEL Keenetic VOX Setup
1. Open the web interface, under the tab "Phone" > "line 1"
Enter the following data:
SIP ID / Username: Your sip number (xxxxxx)
Username: Your sip number (xxxxxx)
Password: Your sip-number password
SIP registration server: voip.syd.spintel.net.au
Domain: voip.syd.spintel.net.au
Realm: voip.syd.spintel.net.au
2. Under the tab "Phone" > "SIP".
Register Expire: 60
The range of RTP ports: 4000 - 65365