PRS Selection Guide

 

Model Reference Source Antenna Type Telecom
Outputs		 Equipment
Costs		 Install
Complexity		 Main Applications
Primary Reference Clock
(TimeSource and TimeCesium)		 GPS and Cesium Window/Wall/
Roof Top
and None		 4 T1/E1 High Medium
  • International Gateways
  • Tandem Offices
  • Offices serving important public safety facilities
TimeSource 3000 (T1)

TimeSource 3100 (E1)		 GPS Roof Top 2 T1/E1 +
(8 T1/E1)		 Very Low High
  • SONET/SDH Hubs and ADMs
  • Class 5/End offices
  • Offices with simple roof access
TimeSource 3500 (T1)

TimeSource 3100 (E1)		 GPS Window/Wall/
Roof Top		 2 T1/E1 +
(8 T1/E1)		 Medium Low to Medium
  • SONET/SDH Hubs and ADMs
  • Class 5/End offices
  • Offices with simple window/wall access
TimeCesium Cesium None 2 T1/E1 High Very Low
  • SONET/SDH Hubs and ADMs
  • Class 5/End offices
  • Offices with limited or no sky view
  • GPS diversity