CHECK ACCOUNT

Account status must enabled

Unlimited Channels or Airtime balance must be > 0

CHECK PBX CONNECTIVITY

Visit pbx.cloudtools.co.za to check access to our network.

IF NO ACCESS

Type in google, “What is my IP”

and paste it in https://156.0.96.60/app/extensions/unblock_ip.php

CHECK PHONE IS REGISTERED

Check registrations

https://156.0.96.60/app/registrations/registrations.php?key=e2e4e9a0-c678-45a2-97a2-e24f9f2481fa

Disable SIP ALG on the router
Disable VO LTE on the router

Try swopping TCP and UDP protocol on the phone

Double check your sip account credentials

Try to register the extension on a different phone using a different network.