1. Use https://youfiles.herokuapp.com/telnetclient/ to Telnet to port 5060 on 156.0.96.60
2. Set the phone setting "Sip Keepalive" value to a lower amount of seconds.
Inbound and Audio Issues
1. Reboot your phone.
2. Double check your sip account credentials, Account Balance and Cloudtime Balance
3. Check your internet connectivity by visiting www.google.co.za
4. Go to our portal, Click Registrations - Click "Check your Firewall IP Blocked Status" to unblock your IP.
5. Disable firewall and NAT settings on your router.
6. Disable SIP ALG on your router.
8. Check that your upload speed is greater than 5MBps using www.speedtest.net
9. Check that your codecs are exactly in this order G.711A (ALAW), G729.
10. Reset your phone to factory settings and set up your account again (don't change any other settings).11. Try changing the phone or the network connection.
Give us a call to connect a phone to the extension for testing.
If problem persists, you will be required to install AnyDesk on a PC on your network and provide login details.