The present invention is to provide a communication system, which is
adapted to employ a HTTP as a transfer protocol, and enables the VoIP
device to issue required provision-request documents in XML syntax to a
provisioning server of an ITSP over the Internet, the provisioning server
then verifies the identification thereof. If the verification is true,
the provisioning server retrieves setting parameters required to
configure the VoIP device from a user database, stores the parameters in
a provision-response package written in XML syntax, and sends the package
back to the VoIP device. Then, the VoIP device performs a configuration
on itself based on the parameters and proceeds with a registration to a
call agent of the ITSP automatically.
