Method of and apparatus for establishing a wideband communication facility through a switched communications network having narrow bandwidth time division multiplexed channels
摘要
Method and apparatus are disclosed for establishing a wideband communication facility from a plurality of narrow bandwidth channels through a switched communications network from a first to a second terminal in response to a call from the first terminal indicating a customer-selected bandwidth for the wideband facility. Apparatus is also disclosed for establishing a wideband communication path through an illustrative switching system interconnecting groups of narrowband time division multiplexed channels established for the wideband facility. The path has a bandwidth greater than any of the TDM channels. Additional buffer memories and memory control arrangements are added to the initial and final stages of a time-space-time switching network to prevent any of the time slot data of a given time frame from being delayed and included in another time frame.
申请公布号
US4885738(A)
申请公布日期
1989.12.05
申请号
US19870080712
申请日期
1987.07.31
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY, AT&T BELL LABORATORIES
发明人
BOWERS, THOMAS E.;FREY, ALAN E.;KERR, HOWARD A.;RUSSELL, LARRY A.;STONE, ROGER E.