ACRPC.NET

My Vintage Computer Virtual Museum and blog page.

AT&T Partner PBX

My AT&T Partner PBX (added to my collection in 2018)

  • 306 Processor card
  • 3x 306 (3 outside lines, 6 extensions) add-on cards
  • 12 outside lines, 24 extensions (proprietary partner phones, or plain analog telephones).