I've recently switched to fibre (Axxess) and have been experiencing problems reconnecting VoIP. I have the Yealink W60B dect and have entered all SIP information that was used with previous ISP however keep receiving register fail. I’ve check the account information and tried adding “:5060” after SIP address. Occasionally it registers once after a hard reset but then resumes register fail. Please assist.
12 months ago
When you switched to fibre did you get a new router? Please check the firewall settings if you did as it is probably restricting the device's access.
Please also check for SIP ALG and ensure its disabled.