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2-1
CHAPTER 2
REQUIREMENTS/SPECIFICATIONS
Read this chapter prior to installing the MicroMMAC-T. It contains
operating specifications and requirements for power and cabling. To obtain
satisfactory performance from this equipment, networks must meet the
requirements and conditions specified in this chapter. Failure to follow
these guidelines may result in poor network performance.
2.1 CABLE SPECIFICATIONS
Token Ring architecture provides for a set of Trunk Coupling Units
(TCUs) connected by trunk cabling. To extend the trunk cabling, install
TPIMs into the MicroMMAC-T’s RI/RO ports. TPIMs have embedded
repeaters and provide trunk connections for UTP, STP, Multimode Fiber,
and Single Mode Fiber cabling.
Attach stations to the TCU lobe ports with lobe cabling. Figure 2-1 shows
a typical ports to cables configuration.
Figure 2-1. MicroMMAC-T Ports/Cables
Trunk Cabling
Token Ring Station
DISPLAY
TOKEN RING HUB WITH LANVIEW®
SUPPORTING 100 OHM STP CABLE
MicroMMAC-24T
RESET
CPU
ACT
MGMT
16 Mb/s
COM 1COM 2
DISPLAY
SPEED
16M4M
6 5 4 3 2 1
18 17 16 15 14 13
24 23 22 21 20 19
12 11 10 9 8 7
DISPLAY
TOKEN RING HUB WITH LANVIEW®
SUPPORTING 100 OHM STP CABLE
MicroMMAC-24T
RESET
CPU
ACT
MGMT
16 Mb/s
COM 1COM 2
DISPLAY
SPEED
16M4M
6 5 4 3 2 1
18 17 16 15 14 13
24 23 22 21 20 19
12 11 10 9 8 7
Lobe Cabling
TCU Lobe Ports
Ring Out TPIM
Ring In TPIM
RO
RO RI
RI