Division 821: Equipment Design and General Requirements - Engineering Information - Traffic Service Systems

Section Date Issue Size Title
821-410-1541969-03-0131.28 MBMaster Scanner Frame - No. 1 ESS Arranged with 2-Wire, 4-Wire and Data Features or No. 2 ESS Arranged with 2-Wire Features or Automatic Intercept Center No. 1A in AIS - Equipment Design Requirements - Electronic Switching and Traffic Service Systems
821-410-154 A1969-11-0111.33 MBMaster Scanner Frame - No. 1 ESS Arranged with 2-Wire, 4-Wire and Data Features or No. 2 ESS Arranged with 2-Wire Features or Automatic Intercept Center No. 1A in AIS - Equipment Design Requirements - Electronic Switching and Traffic Service Systems