Token Ring 2-Port
6
17
Multi-Media Repeater
Setting Configuration Switches
1. Set the Token Ring Multi-Media Repeater network Speed
switch to match the network speed (4 Mbps or 16 Mbps).
2. Set the Token Ring Multi-Media Repeater ZDL switch to ON to
enable automatic speed detection (unless connecting non-
802.5 compliant test equipment such as Hewlett Packard
Token Ring tester).
3. Press the reset button.
Reset Switch
Network Speed Switch
ZDL Switch
Token Ring 2 Port Multi Media Repeater
n e t w o r k s
T R A N S I T I O N
TR-MMR-02
Power
Ring In
Lobe In
Ring Out
Lobe Out
Reset
Speed
4
16
ZDL
Off
On
Token Ring Twisted Pair Network Considerations
Twisted pair cables between passive MAUs and Token Ring Multi-
Media Repeaters must be short (patch cables). The patch cables can be
either Type 1 (150
Ω
) twisted pair or Category 5 (100
Ω
) twisted pair.
At 16Mbps network speed, shielded twisted pair (STP) cables between
Token Ring Multi-Media Repeaters or between Token Ring Multi-Media
Repeaters and terminal equipment can be up to 400 meters (1310 feet);
unshielded twisted pair (UTP) cables can be up to 350 meters (1140
feet).
Type 1 (150
Ω
) Patch Cable
RI
RO
RI
RO
RI
RO
Category 5 (100
Ω
) UTP Patch Cable
LI
LO
Category 5 (100
Ω
) UTP
Up to 350 meters @ 16Mbps
RI
RO
Type 1 (150
Ω
) Patch Cable
Category 5 (100
Ω
) STP
Up to 400 meters @ 16Mbps
