RAN Box

INFORMATION:
RAN box is child device of 128-port adapter. Each RAN box has 16-port and
there may have up to 8 RANs on one 128-port adapter for a total of 128 ports.

Don't confuse the RAN with the 16-port box type on the MCA 64-port adapter.
This type is rather known as CONCENTRATOR not RAN. This box also has 16-port
( 8 ports each side, not 16-port on the same side as the 128-port type.) Each
16-port CONCENTRATOR is attached directly on a dedicated port on one of the
4 port of the 64-port adapter for a total of 64 ports. This is a microchannel
adapter and there is no PCI or ISA version of the 64-port adapter.

There are 4 different FRU of RAN (128-port type ): standard EIA-232, enhanced
EIA-232, rack-mounted EIA-232 and EIA-422.

To get the correct information, it is recommended that you check the appropriate
128-port adapter page below. Some 128-port adapters don't support the enhanced RAN.

PCI 3-C #2944 128-Port Controller
ISA 3-9 #2932 128-Port Async Controller
MCA 3-7 #8128 128-Port Asynchronous


TYPE of RAN:
                                   FFC    FRU      FC    Speed
              RAN 16-Port EIA-232  837  88G3842  #8130  1.2 Mbps
( Rack Mount) RAN 16-Port EIA-232  837  40H2589  #8136  1.2 Mbps
     Enhanced RAN 16-Port EIA-232  837  93H6549  #8137  2.4 Mbps
     Enhanced RAN 16-Port EIA-422  684  93H6563  #8138  2.4 Mbps


Diagram:


Update: Jan 2003 by BJ Croft