Pictured above: A central office compliant system with
  • Server (middle left).
  • Cold standby server (middle left).
  • Two T1 audio nodes with voice and FAX (48 lines each) (middle right).
  • Excel programmable PBX switch (upper right).
  • A redundant, clustered, RAID 1 (mirrored) disk subsystem with six pairs of hot-swappable SCSI disk drives (upper left).
  • Redundant 48 VDC hot-swappable power supplies (lower left).
  • Background
  • Hardware Description