Newsgroups under Data communications
- Cabling (comp.dcom.cabling)
- Cell Relay (comp.dcom.cell-relay)
- Cisco (comp.dcom.sys.cisco)
- Frame Relay networks (comp.dcom.frame-relay)
- ISDN (Integrated Services Digital Network) (comp.dcom.isdn)
- Network management (comp.dcom.net-management)
- Servers (comp.dcom.servers)
- Telecommunications, technical (comp.dcom.telecom.tech)
- Token ring (comp.dcom.lans.token-ring)
- Video-conferencing (comp.dcom.videoconf)
- Wellfleet (comp.dcom.sys.wellfleet)