draft-ietf-megaco-h248v2-04.txt

OTP是开放电信平台的简称

      7.2.5       AuditValue...........................................57 
      7.2.6       AuditCapabilities....................................60 
      7.2.7       Notify...............................................62 
      7.2.8       ServiceChange........................................63 
      7.2.9       Manipulating and Auditing Context Attributes.........68 
      7.2.10      Generic Command Syntax...............................69 
       
      8           TRANSACTIONS.........................................69 
      8.1         Common parameters....................................71 
      8.1.1       Transaction Identifiers..............................71 
      8.1.2       Context Identifiers..................................71 
      8.2         Transaction Application Programming Interface........71 
      8.2.1       TransactionRequest...................................72 
      8.2.2       TransactionReply.....................................72 
      8.2.3       TransactionPending...................................74 
      8.3         Messages.............................................75 
       
      9           TRANSPORT............................................75 
      9.1         Ordering of Commands.................................76 
      9.2         Protection against Restart Avalanche.................77 
       
      10          SECURITY CONSIDERATIONS..............................78 
      10.1        Protection of Protocol Connections...................79 
      10.2        Interim AH scheme....................................79 
      10.3        Protection of Media Connections......................80 
       
      11          MG-MGC CONTROL INTERFACE.............................81 
      11.1        Multiple Virtual MGs.................................81 
      11.2        Cold start...........................................82 
      11.3        Negotiation of protocol version......................82 
      11.4        Failure of a MG......................................83 
      11.5        Failure of an MGC....................................84 
       
      12          PACKAGE DEFINITION...................................85 
      12.1        Guidelines for defining packages.....................85 
      12.1.1      Package..............................................86 
    
    
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      12.1.2      Properties...........................................87 
      12.1.3      Events...............................................88 
      12.1.4      Signals..............................................88 
      12.1.5      Statistics...........................................89 
      12.1.6      Procedures...........................................89 
      12.2        Guidelines to defining Parameters to Events and 
                      Signals..........................................89 
      12.3        Lists................................................90 
      12.4        Identifiers..........................................90 
      12.5        Package registration.................................91 
       
      13          PROFILE DEFINITION...................................91 
       
      14          IANA CONSIDERATIONS..................................92 
      14.1        Packages.............................................92 
      14.2        Error codes..........................................93 
      14.3        ServiceChange reasons................................93 
      14.4        Profiles.............................................94 
       
      ANNEX A     BINARY ENCODING OF THE PROTOCOL......................95 
      A.1         Coding of wildcards..................................95 
      A.2         ASN.1 syntax specification...........................96 
       
      ANNEX B     TEXT ENCODING OF THE PROTOCOL.......................120 
      B.1         Coding of wildcards.................................120 
      B.2         ABNF specification..................................120 
      B.4         Hexadecimal octet sequence..........................137 
       
      ANNEX C     TAGS FOR MEDIA STREAM PROPERTIES....................138 
      C.1         General media attributes............................138 
      C.2         Mux properties......................................140 
      C.3         General bearer properties...........................140 
      C.4         General ATM properties..............................141 
      C.5         Frame Relay.........................................145 
      C.6         IP 146 
      C.7         ATM AAL2............................................146 
      C.8         ATM AAL1............................................148 
      C.9         Bearer capabilities.................................150 
      C.10        AAL5 properties.....................................161 
      C.11        SDP equivalents.....................................162 
      C.12        H.245...............................................164 
       
      ANNEX D     TRANSPORT OVER IP...................................165 
      D.1         Transport over IP/UDP using Application Level Framing 
                     (ALF)............................................165 
      D.1.1       Providing At-Most-Once functionality................165 
      D.1.2       Transaction identifiers and three-way handshake.....166 
      D.1.2.1     Transaction identifiers.............................166 
      D.1.2.2     Three-way handshake.................................166 
    
    
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      D.1.3       Computing retransmission timers.....................167 
      D.1.4       Provisional responses...............................168 
      D.1.5       Repeating Requests, Responses and Acknowledgements..168 
      D.2         Using TCP...........................................170 
      D.2.1       Providing the At-Most-Once functionality............170 
      D.2.2       Transaction identifiers and three-way handshake.....170 
      D.2.3       Computing retransmission timers.....................170 
      D.2.4       Provisional responses...............................171 
      D.2.5       Ordering of commands................................171 
       
      ANNEX E     BASIC PACKAGES......................................172 
      E.1         Generic.............................................172 
      E.2         Base Root Package...................................174 
      E.3         Tone Generator Package..............................178 
      E.4         Tone Detection Package..............................179 
      E.5         Basic DTMF Generator Package........................182 
      E.6         DTMF detection Package..............................184 
      E.7         Call Progress Tones Generator Package...............186 
      E.8         Call Progress Tones Detection Package...............187 
      E.9         Analog Line Supervision Package.....................188 
      E.10        Basic Continuity Package............................192 
      E.11        Network Package.....................................195 
      E.12        RTP Package.........................................197 
      E.13        TDM Circuit Package.................................199 
       
      APPENDIX I  Example Call Flows..................................201 
      I.1         Residential Gateway to Residential Gateway Call.....201 
      I.1.1       Programming Residential GW Analog Line Terminations 
                      for Idle Behaviour..............................201 
      I.1.2       Collecting Originator Digits and Initiating Termination
                     .................................................203 
       
      APPENDIX II CHANGES FROM RFC XXXX [draft-ietf-megaco-3015corr 
                     -02.txt].........................................213 
       
      INTELLECTUAL PROPERTY RIGHTS....................................217 
      Acknowledgments.................................................218 
      Authors' Addresses..............................................219 
       
       









    
    
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   1  SCOPE 

      This document defines the protocols used between elements of a 
      physically decomposed multimedia gateway. There are no functional 
      differences from a system view between a decomposed gateway, with 
      distributed sub-components potentially on more than one physical 
      device, and a monolithic gateway such as described in Recommendation 
      H.246. This document does not define how gateways, multipoint control 
      units or interactive voice response units (IVRs) work. Instead it 
      creates a general framework that is suitable for these applications. 

      Packet network interfaces may include IP, ATM or possibly others. The 
      interfaces will support a variety of Switched Circuit Network (SCN) 
      signalling systems, including tone signalling, ISDN, ISUP, QSIG and 
      GSM. National variants of these signalling systems will be supported 
      where applicable. 

      Products claiming compliance with Version 1 of H.248.1 shall comply 
      with all of the mandatory requirements of H.248.1 originally approved 
      in 06/2000 and reissued in 03/2002.  H.248.1 (03/2002) is common text 
      with RFC xxxx [draft-ietf-megaco-3015corr-03.txt]. 

      Products claiming compliance with Version 2 of H.248.1 shall comply 
      with all of the mandatory requirements of H.248.1 approved on 
      05/2002.  H.248.1 (05/2002) is common text with this document. 

      Products shall indicate the version of the protocol in use by using 
      ServiceChangeVersion as