RFC 3087 (rfc3087) - Page 2 of 39

Control of Service Context using SIP Request-URI

Alternative Format: Original Text Document
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RFC 3087                  SIP Service Control                 April 2001


Table of Contents

   1.      Introduction . . . . . . . . . . . . . . . . . . . . . . .  3
   2.      Example Application  . . . . . . . . . . . . . . . . . . .  3
   2.1     Using URIs to Control Voice Mail Service Behavior  . . . .  3
   3.      Voice Mail Scenario Descriptions . . . . . . . . . . . . .  5
   3.1     Deposits . . . . . . . . . . . . . . . . . . . . . . . . .  5
   3.1.1   Direct Request to Deposit to a particular mailbox  . . . .  5
   3.1.1.1 SIP source . . . . . . . . . . . . . . . . . . . . . . . .  5
   3.1.1.2 Arbitrary PSTN source  . . . . . . . . . . . . . . . . . .  5
   3.1.1.3 Recognized PSTN source . . . . . . . . . . . . . . . . . .  6
   3.1.2   Direct Request to Deposit, mailbox to be determined  . . .  6
   3.1.2.1 SIP source . . . . . . . . . . . . . . . . . . . . . . . .  6
   3.1.2.2 PSTN source  . . . . . . . . . . . . . . . . . . . . . . .  6
   3.1.2.3 Indirect Request to Deposit, due to find-me proxy decision  6
   3.2     Retrievals . . . . . . . . . . . . . . . . . . . . . . . .  7
   3.2.1   Request to Retrieve from a particular mailbox  . . . . . .  7
   3.2.1.1 Trusted SIP source . . . . . . . . . . . . . . . . . . . .  7
   3.2.1.2 Authenticated SIP source . . . . . . . . . . . . . . . . .  7
   3.2.1.3 Unauthenticated SIP source . . . . . . . . . . . . . . . .  7
   3.2.1.4 PSTN source  . . . . . . . . . . . . . . . . . . . . . . .  7
   3.2.2   Request to Retrieve, mailbox to be determined  . . . . . .  7
   3.2.2.1 SIP source . . . . . . . . . . . . . . . . . . . . . . . .  7
   3.2.2.2 Arbitrary PSTN source  . . . . . . . . . . . . . . . . . .  8
   3.2.2.3 Recognized PSTN source . . . . . . . . . . . . . . . . . .  8
   4.      Voice Mail Call Flow Examples  . . . . . . . . . . . . . .  8
   4.1     Generic Scenario . . . . . . . . . . . . . . . . . . . . .  8
   4.1.1   Direct call to the voice mail system . . . . . . . . . . .  8
   4.2     Message Deposit Scenarios  . . . . . . . . . . . . . . . . 13
   4.2.1   Call to known subscriber forwarded on no answer  . . . . . 13
   4.2.2   Call to known subscriber forwarded on busy . . . . . . . . 19
   4.2.3   Direct call to a subscriber's mailbox  . . . . . . . . . . 24
   4.3     Message Retrieval Scenarios  . . . . . . . . . . . . . . . 29
   4.3.1   Call to retrieve messages believed to be from a known
           subscriber . . . . . . . . . . . . . . . . . . . . . . . . 29
   4.3.2   Call to retrieve messages from an authenticated subscriber 33
   5.      Security Considerations  . . . . . . . . . . . . . . . . . 38
   6.      Acknowledgments  . . . . . . . . . . . . . . . . . . . . . 38
           References . . . . . . . . . . . . . . . . . . . . . . . . 38
           Authors' Addresses . . . . . . . . . . . . . . . . . . . . 38
           Full Copyright Statement . . . . . . . . . . . . . . . . . 39










Campbell & Sparks            Informational
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