Specifications

TOKEN RING NETWORK CABLING

4-8

Recommended Maximum Cable Lengths and Stations

Table 4-3 lists recommended trunk (RI/RO) and lobe lengths for UTP

cable types used with active and passive Cabletron Systems products at 4

and 16 Mbps. It also lists maximum station supported.

FIBER OPTIC CABLE SPECIFICATIONS

Fiber optic cable is a high-performance media used for both baseband and

broadband transmission. It provides far greater bandwidth and greater

transmission rates than twisted-pair copper cable and lower attenuation

as well. Fiber optic cable is immune to Electromagnetic Interference (EMI)

and Radio-Frequency Interference (RFI) and does not radiate EMI.

Data bits are represented by optical signals, which are generated by and

transmitted over ﬁber optic cable by an LED or laser.

Table 4-3. Recommended Maximum Cable Lengths and Stations

UTP Cat. 3/4 UTP Cat. 5

RI/RO Distance, 4 Mbps 200 m 250 m

RI/RO Distance, 16 Mbps 100 m 120 m

Active Device, 16 Mbps

Maximum Stations 150 150

Maximum Lobe Length 100 m 120 m

Passive Device, 16 Mbps

Maximum Stations 100 100

Maximum Lobe Length 60 m 85 m

Active Device, 4 Mbps

Maximum Stations 150 150

Maximum Lobe Length 200 m 250 m

Passive Device, 4 Mbps

Maximum Stations 100 100

Maximum Lobe Length

100 m 130 m