How to Register GrandCentral Free VoIP Service outside US
Currently, GrandCentral only provides service in US and you need a US number to finish registration. Here is an instruction of how to register GrandCentral free VoIP service outside US with IPKall and VoIPBusterPro.
First, you need to register a VoIPBusterPro account with its software client. Other Betamax VoIP products based on SIP also work. I choose them because they work better with firewall than other SIP software client and you call set your fixed or mobile number as Caller ID.
Use the VoIPBusterPro account information to register a US number via IPKall, then you call receive incoming calls for free from traditional PSTN network. Click the link in the GrandCentral invitation email to proceed registration.
First choose a GrandCentral virtual number, then use the virtual number from IPKall to complete registration.
Click the call buttom to proceed verification，
Then you will receive the verify call from GrandCentral via the VoIPBusterPro client software, input the verify number displayed on the screen via the dialpad, then your GrandCentral account will be activated.
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