RFC 3578 (rfc3578) - Page 2 of 13

Mapping of Integrated Services Digital Network (ISDN) User Part (ISUP) Overlap Signalling to the Session Initiation Protocol (SIP)

RFC 3578             ISUP Overlap Signalling to SIP          August 2003


Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Conversion of ISUP Overlap Signalling into SIP en-bloc
       Signalling . . . . . . . . . . . . . . . . . . . . . . . . . .  3
       2.1.  Waiting for the Minimum Amount of Digits . . . . . . . .  4
       2.2.  The Minimum Amount of Digits has been Received . . . . .  4
   3.  Sending Overlap Signalling to a SIP Network. . . . . . . . . .  5
       3.1.  One vs. Several Transactions . . . . . . . . . . . . . .  5
       3.2.  Generating Multiple INVITEs. . . . . . . . . . . . . . .  6
       3.3.  Receiving Multiple Responses . . . . . . . . . . . . . .  8
       3.4.  Canceling Pending INVITE Transactions. . . . . . . . . .  9
       3.5.  SIP to ISUP. . . . . . . . . . . . . . . . . . . . . . .  9
   4.  Security Considerations. . . . . . . . . . . . . . . . . . . . 10
   5.  Acknowledgments. . . . . . . . . . . . . . . . . . . . . . . . 10
   6.  Normative References . . . . . . . . . . . . . . . . . . . . . 10
   7.  Intellectual Property Statement. . . . . . . . . . . . . . . . 11
   8.  Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . 12
   9.  Full Copyright Statement . . . . . . . . . . . . . . . . . . . 13
































Camarillo, et al.           Standards Track