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A SIP phone must be instructed as to where to get its configuration/provisioning information from. Each device has a setting in the config that the phone looks to towards for its provisioning details.
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To simplify workflows for customers, Phonism integrates with the manufacturers' RS services. If you input your RS credentials into Phonism (see the Initial account setup guide), Phonism programmatically instructs the manufacturers' RS to point that device to the appropriate provisioning URL for your account.
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