Additional information, D.1 nbr overview, Appendix d – Cabletron Systems NBR-420 User Manual
Page 69: Appendix d additional information
 
NBR-SERIES Installation Guide
Page D-1
APPENDIX D
ADDITIONAL INFORMATION
D.1 NBR OVERVIEW
The NBR provides bridging and management for up to four separate 
Ethernet channels (A, B, C, and D). The following list contains the 
currently available EPIMs:
•
EPIM-T – 10BASE-T Twisted Pair Segment Interface Module
•
EPIM-F1/EPIM-F2 – Multimode Fiber Optic Segment Interface 
Modules
•
EPIM-F3 – Single Mode Fiber Optic Segment Interface Module
•
EPIM-C – Thin-net Coaxial Interface Module
•
EPIM-A/EPIM-X – AUI Cable Segment Interface Modules
In addition to Ethernet channels A through D, the NBR provides 
management for two optional Bridge/Router Interface Modules (BRIMs). 
These modules allow for additional Ethernet connections, Wide Area 
(Full or Fractional T1; 56 k DDS) access, or links to existing high-speed 
Asynchronous Transfer Mode (ATM) or Fiber Distributed Data Interface 
(FDDI) network backbones.
NOTE
Refer to the Customer Release Notes to see which BRIMs are 
supported.