| 
| ITU-T Study Group 4 Collective Letters (Study Period 2001-2004)  |  | 
| [001] Meeting of Study Group 4 (Geneva, 25 November - 6 December 1996) |  | 
| [001a1] Addendum 1 to TSB Collective letter 1/4 |  | 
| [002] Meeting of Working Party 2/4 (Lannion, France, 24-25 April 1997) |  | 
| [003] Meeting of Study Group 4 Geneva, 13-24 October 1997 |  | 
| [004] Meeting of Study Group 4 (Geneva, 15-26 June 1998) Attention ! Change of meeting dates |  | 
| [005] Meeting of Working Parties 4/4 and 5/4 (Tokyo, 28 October 1998) in conjunction with TMN Experts Group meeting (Tokyo, 21-27 October 1998) |  | 
| [006] Meeting of Study Group 4 Geneva, 15-26 March 1999 |  | 
| [007] Meeting of Working Party 2/4 Eningen (Germany), 24 September 1999 |  | 
| [008] Meeting of Study Group 4 Geneva, 24 January - 4 February 2000 |  | 
| [009] Meeting of Study Group 4 Geneva, 15 June 2000 (Aproval of draft Recommendation M.2101) |  | 
| [010] Meeting of the Working Parties 4/4 & 5/4 Torrance, California (USA), 18 August 2000 |  |