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Unable to register phone

I have been unable to register my Yealink SIP T21P phone. 

Any advice would be welcome 


1 Comment

Hi Waweru,

I hope you are well. Please try pinging from your PC to see if your network allows traffic to us. If the ping is successful please try using the IP address instead of the URL for the domain/host. Also, check if all the credentials are correctly inputted into the device. 

Thank you. 

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