My presentations on standards for IP-/multimedia telephony and service APIs


Pointers to standards

  • 3GPP/UMTS IMS (IP Multimedia Subsystem)
    • NOTE: Latest version of 3GPP work-in-progress-document can be found at www.3gpp.org/ftp/Specs/
    • Choose newest date, and then correct release, then number-series, then doc.number. Examples:
      http://www.3gpp.org/ftp/Specs/2001-09/rel-5/23_series/23228-520.zip
      http://www.3gpp.org/ftp/Specs/2001-06/Rel-4/23_series/23127-420.zip
      Sometimes a work-in-progress-document is not existing under newest date, then go back to a previous date
    • See also the useful document mapping titles to numbers
    • Drafts as of Jan 2003 are given, use document number to find newer versions at 3GPP site

§         on Architecture for IP Multimedia Subsystem (IMS) (UMTS release 5) ,

§         TS 23.228 ver5.7 or local copy

§         on WLAN as an access into UMTS IMS release 6: 

§         TR 23.934 ver.0.1

§         on Presence and IM in UMTS IMS, release 6:

§         22.141 ver 6.10 or copy,

§         23.141 ver.6.10 or copy,

§         23.841 ver.6.0 or copy

§         on OSA: Open service Access (releases 4,5 and 6)

§         TS 22.121 ver.5.31, or copy

§         TS 22.127 ver.5.50, or copy

§         TS 23.127 ver. 5.20 or copy


Last updated on Oct. 9, 2003, by Lill Kristiansen.