Open Queries related Mobile Telecom

 
I am searching answers and references for the following queries.This is for a thesis project. If you happen to know the answer / reference please post it in "COMMENTS" section.

Thanks to Gavin for the below answers.

1. Iu-FLEX/ A- Flex is recommended in which release of 3GPP ? 

   R5  - Refer 3GPP TS 23.236 V5.4.0 (2005-09) for Iu-Flex Covering CS + PS

   Reference : http://www.3gpp.org/ftp/Specs/html-info/23236.htm
 
2. Gb- Flex is recommended in which release of 3GPP ? 

   R5  - Refer  3GPP TS 23.236 V5.4.0 (2005-09) 

   Reference : http://www.3gpp.org/ftp/Specs/html-info/23236.htm

3. Mobile Internet Traffic Growth Graph since 1990s

    Reference : http://www.cisco.com/en/US/solutions/collateral/ns341/ns525/ns537/ns705/ns827/white_paper_c11-520862.html

4. Internet Traffic Growth Graph since 1990s 

     Reference : http://www.internetworldstats.com/stats.htm

5. ATM [Used in Iu] is part of any standard recommendations ?

     Reference : http://www.itu.int/ITU-T/recommendations/rec.aspx?rec=4560