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Unauthorized suggests that the password or user name are probably incorrect. Please be aware that the username and password you log in to localphones website are not the same as your credentials for your ATA. Please be sure you type the info into the the Obi setup. Do not copy and paste! I have to say the usernam looks strange to me. I think they usually start with a 1.
Click the internet phone tab in localphone and look for the following information. You SIP ID and SIP Password will obviously be different.
Use our Internet Phone service with your VoIP device
Our Internet Phone service is open - that means you can use it with any compatible device. Just use the log in details below to make it work.
SIP ID: 1000000
SIP Password: xxxxxxxx - change
Server: localphone.com