190-118  IBM PS/2 Fax Concentrator/A

Fax Concentrator Base Board   IFCU-1

A1 3P400L2 supressor CN3  56 pin receptacle CN4 RJ-11 jack HIC1 H012715 (voltage regulator?) IC1 TEL TE7730 IC3 80C186 IC4 MB8421-90L IC5 MB8431-90L IC7 Rockwell Monofax R96MFX IC8 NEC D72001GC IC9 Ricoh RF5GF21

IC10 82C55AFP IC11 MSM6843RS IC12 MSM6258V6S PC1 Sharp PC817 PC2 Sharp dual PC817 PC3 Sharp PC725V XTL1 20.00 MHz Xyal XTL2 8.000 MHz osc XTL3 24.0000 MHz osc XTL4 3.579 MHz xtal T1 Big whoppin' transformer

Fax Concentrator Daughter Card  IFCU-2
CN1  56 pin header
  IC1 27C512 Odd
  IC2 MB1422A
  IC3 27C512 Even
  IC5-8 NEC 424256-80
  XTL1 20.000 MHz osc

   The board says "Silicon Software" by Ready Systems Corp.
   CN1 mates with CN3 on the base board.

   High function microprocessor based FAX adapter that can provide voice prompting, telephone tone detection, and optical mark recognition functions when used with a suitable application program.  Features  include real-time processing of tasks such as compression (Image to Group 3), decompression, and format conversions (Group 3 to Group 4) within the adapter, as opposed to doing these tasks with software in the PS/2* computer's  main processor.  Can communicate with Group 3 facsimile devices over the public switched telephone network for the purpose of routing FAX data.  Supports the IBM* Facsimile Support/400 program offering for the PS/2* computers, although it can be used with suitably developed programs for other PS/2 computer applications.