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InterviewSolution
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What Is The Registration And Why It Is Required? |
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Answer» The registration creates a temporary BINDING between the Address of Record (AOR) URI in the To header and the device URI in the Contact header.The binding of Registration is not required to enable a user agent to use a proxy server for outgoing calls. It is necessary, however, for a user agent to REGISTER to receive INCOMING calls from proxies that serve that domain unless some non-SIP mechanism is used by the location service to POPULATE the SIP URIS and Contacts of end-points. The registration creates a temporary binding between the Address of Record (AOR) URI in the To header and the device URI in the Contact header.The binding of Registration is not required to enable a user agent to use a proxy server for outgoing calls. It is necessary, however, for a user agent to register to receive incoming calls from proxies that serve that domain unless some non-SIP mechanism is used by the location service to populate the SIP URIs and Contacts of end-points. |
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