• Table of contents
• CologneChip HFC
  • IOB1E1 V2
  • IOB1E1 V3
  • IOB4ST V2
  • ASS-PCI-ISDN with clock output rework

CologneChip HFC¶

This is a seriels of generic ISDN adapters with CologneChip HFC chipsets:

• HFC-E1 (single-port E1 PCI), datasheet see hfc-e1.pdf
• HFC-S (single-port BRI PCI)
• HFC-4S (quad-port BRI PCI) + HFC-8S (octal-port BRI PCI), datasheet see hfc-8s-4s.pdf
• HFC-USB (singel-port USB)

These boards are typically all supported by mISDN, and some by DAHDI

IOB1E1 V2¶

IOB1E1 V3¶

IOB4ST V2¶

ASS-PCI-ISDN with clock output rework¶

This no-name HFC-S board has been enhanced with a 2pin header to provide an 8kHz clock output. This highly stable 8kHz clock provided by the public ISDN network could be used as a reference clock to HFC-E1 boards driving cellular base stations in the early days of openbsc.