Dialogic 6.2 manual November 255

Understanding the SIP Protocol

Registrations are one way to create this information, but not the only way. Arbitrary mapping functions are configured at the discretion of the administrator.

Finally, it is important to note that in SIP, registration is used for routing incoming SIP requests and has no role in authorizing outgoing requests. Authorization and authentication are handled in SIP either on a request-by-request basis with a challenge/response mechanism, or by using a lower layer scheme.

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