
Installation . . . . . . . . . . . . . . . . . .4
Operation . . . . . . . . . . . . . . . . . . .8
Cable Specifications . . . . . . . . . . .9
Technical Specifications . . . . . . .10
Half-Duplex Network . . . . . . . . .11
Fault Isolation and Correction . .14
Compliance Information . . . . . . .15
Contact Us . . . . . . . . . . . . . . . . .16
Part Number Port One - Copper
10Base-T/100Base-TX
Port Two - Duplex Fiber-Optic
100Base-FX
CBFTF1011-100 RJ-45
100 m (328 ft)*
ST, 1300 nm multimode
2 km (1.2 miles)*
CBFTF1013-100 RJ-45
100 m (328 ft)*
SC, 1300 nm multimode
2 km (1.2 miles)*
CBFTF1014-100 RJ-45
100 m (328 ft)*
SC, 1300 nm singlemode
20 km (12.4 miles)*
CBFTF1015-100
(long haul)
RJ-45
100 m (328 ft)*
SC, 1300 nm singlemode
40 km (24.8 miles)*
CBFTF1016-100
(extra long haul)
RJ-45
100 m (328 ft)*
SC, 1300 nm singlemode
60 km (37.2 miles)*
CBFTF1017-100
(long wave length)
RJ-45
100 m (328 ft)*
SC, 1550 nm singlemode
80 km (49.7 miles)*
CBFTF1018-100 RJ-45
100 m (328 ft)*
MT-RJ, 1300 nm multimode
2 km (1.2 miles)*
CBFTF1025-100 RJ-45
100 m (328 ft)*
MT-RJ, 1300 nm singlemode
5 km (3.1 miles)*
USER’S GUIDE
CBFTF10xx-10x
Slide-in-Module Media Converter
• Copper to Fiber
• 10/100 Bridging (2-Port)
• 10/100Base-TX to 100Base-FX
The CBFTF10xx-10x 2-port Ethernet™/Fast
Ethernet™ bridging Media Converter is designed to
be installed in a TRANTSITION Networks
PointSystem™ Conversion Center™ and connects
100Base-TX Fast Ethernet™ twisted-pair copper
network devices to network devices on a 100BaseFX Fast Ethernet™ fiber network.
* Typical maximum cable distance. (Actual distance is dependent upon the
physical characteristics of the network installation.)
2
CBFTF10xx-10x
Tech Support: 800-260-1312 International: 952-941-7600 7am-6pm CST (GMT-6:00
NOTE:
CBFTF1029-100 and CBFTF1029-101 are intended to be installed together.
CBFTF1029-102 and CBFTF1029-103 are intended to be installed together.
* Typical maximum cable distance. (Actual distance is dependent upon the
physical characteristics of the network installation.)
Product Features
RATE CONVERSION
The CBFTF10xx-10x 2-port Ethernet™/Fast Ethernet™ bridging Media
Converter allows connection of 10Mb/s terminal devices on a 10Base-T
legacy Ethernet™ copper network to 100Mb/s terminal devices on a 100BaseTX Fast Ethernet™ copper network and/or to 100Mb/s terminal devices on a
100Base-FX Fast Ethernet™ fiber network.
AUTO-NEGOTIATION
The Auto-Negotiation feature allows the Media Converter to be used with
10Base-T and 100Base-TX twisted-pair ports. Using Auto-Negotiation, the
Media Converter brings up the copper links in the highest speed and mode
possible for all the attached network devices.
If selected, Auto-Negotiation allows a twisted-pair link to become operational
only after the Auto-Negotiation function matches network speed capabilities
at both ends of the twisted-pair copper segment.
AUTOCROSS
The AutoCross™ feature, when selected, allows either straight-through (MDI)
or crossover (MDI-X) cables to be used when connecting to 10Base-TX or
100Base-TX devices, such as hubs, transceivers, or network interface cards
(NICs). AutoCross determines the characteristics of the cable connection and
automatically configures the unit to link up, regardless of the cable
configuration.
Part Number Port One - Copper Port Two - Simplex Fiber-Optic
CBFTF1029-100 RJ-45
100 m (328 ft)*
SC, 1310 mn (TX)/1550 nm (RX)
singlemode, 20 km (12.4 miles)*
CBFTF1029-101 RJ-45
100 m (328 ft)*
SC, 1550 mn (TX)/1310 nm (RX)
singlemode, 20 km (12.4 miles)*
CBFTF1029-102 RJ-45
100 m (328 ft)*
SC, 1310 mn (TX)/1550 nm (RX)
singlemode, 40 km (24.8 miles)*
CBFTF1029-103 RJ-45
100 m (328 ft)*
SC, 1550 mn (TX)/1310 nm (RX)
singlemode, 40 km (24.8 miles)*

techsupport@transition.com -- Select the “Transition Now” Link for a Live Web Chat
Product Features -- Continued
DISTANCE EXTENSION
The CBFTF10xx-10x Media Converter segments 10Base-T copper Ethernet
and/or 100Base-TX copper Fast Ethernet and 100Base-FX fiber Fast Ethernet
collision domains.
In a half-duplex Ethernet™ or half-duplex Fast Ethernet™ environment, the
CBFTF10xx-10x Media Converter extends network distances by segmenting
collision domains so that the 10Base-T 5-Segment Rule (see page 12) or the
100Base-TX/ 100Base-FX 512-Bit Rule (see pages 11 and 12) applies
separately to each collision domain.
In a full-duplex Ethernet™ or full-duplex Fast Ethernet™ environment, the
CBFTF10xx-10x Media Converter extends network distances to the physical
cable limitations imposed by the selected twisted-pair copper fiber cables (see
pages 9 and 10).
CONGESTION REDUCTION
The CBFTF10xx-10x Media Converter does not forward collision signals or
error packets from one collision domain to another, improving baseline
network performance. In addition, the bridging Media Converter filters
packets destined for local devices, also reducing network congestion.
LINK PASS-THROUGH
When the Link Pass-Through feature is activated, a fault on one side of the
Media Converter stops the signal and data transmission on the other side of
the Media Converter. If the Media Converter does not detect a good link on
the copper side, the Media Converter disables all transmission (including
active-idle) on the fiber side.
10Base-T or
100Base-TX
Device
Media Converter
100Base-FX
Device
Original Fault
10Base-T or
100Base-TX
Device
Media Converter
100Base-FX
Device
Original Fault
Fiber
Copper
Fiber
Copper
INSTALLATION
Set the DIP Switches
The DIP switches are located on the circuit board of the Media Converter. Use a
small, flatblade screwdriver or a similar device to set each DIP switch.
NOTE: DIP switch numbers 1, 2, 3, and 5 apply to the twisted-pair copper
connector. DIP switch number 4 applies to the fiber connector. DIP switch
number 6 applies to the Media Converter.
1. Twisted-Pair Auto-Negotiation
UP (Enabled) - The Media Converter
“advertises” ALL rate and mode capabilities to
the network:
• 100Mb/s full-duplex,
• 100Mb/s half-duplex,
• 10Mb/s full-duplex, and
• 10Mb/s half-duplex.
DOWN (Disabled) - The bridging Media Converter does not “advertise” the rate
and mode capabilities to the network. Switch #2 and switch #3 are then used to
set the twisted-pair rate and mode.
2. Twisted-Pair Rate
UP - Sets the twisted-pair rate to 100Base-TX.
DOWN - Sets the twisted-pair rate to 10Base-T.
3. Twisted-Pair Mode
UP (Full-Duplex):
The twisted-pair cable distances are constrained
by the cable requirements (see page 10).
DOWN (Half-Duplex):
At the 100Base-TX rate, the twisted-pair cable
distances are constrained by the 512-Bit Rule
(see page 11).
At the 10Base-T rate, the twisted-pair cable distances are constrained by the 5Segment Rule (see page 12).
4
CBFTF10xx-10x
Tech Support: 800-260-1312 International: 952-941-7600 7am-6pm CST (GMT-6:00
Twisted-pair
Auto-negotiation ON
Twisted-pair
Auto-negotiation OFF
DOWN
UP
1
Twisted-pair
100BASE-TX
Twisted-pair
10BASE-T
DOWN
UP
2
Twisted-pair
FULL-DUPLEX
Twisted-pair
HALF-DUPLEX
DOWN
UP
3

INSTALLATION -- Continued
4. Fiber Mode
UP (Full-Duplex) - The fiber cable distances are
constrained by the cable requirements (see p. 9 and 10).
DOWN (Half-Duplex) - The fiber cable distances are
constrained by the 512-Bit Rule (see page 11).
5. Autocross
UP (Enable) - The Media Converter connects
automatically to either straight-through or crossover
twisted-pair copper cable.
DOWN (Disable) - Either straight-through or crossover
twisted-pair copper cable must be installed, according to
the site requirements.
6. Link Pass-Through
UP (Enable) - When Link Pass-Through is enabled, a fault
on one side of the Media Converter stops the signal and
data trasmission on the other side.
DOWN (Disable) - When Link Pass-Through is disabled,
a fault on one side of the Media Converter does not stop
the signal and data trasmission on the other side.
techsupport@transition.com -- Select the “Transition Now” Link for a Live Web Chat
Fiber
FULL-DUPLEX
Fiber
HALF-DUPLEX
DOWN
UP
4
AutoCross Enable
AutoCross Disable
DOWN
UP
5
Link Pass-Through Enable
Link Pass-Through Diable
DOWN
UP
6
Installing the Slide-In-Module
CAUTION: Slots in the PointSystem™ Chassis without a Slide-in-Module
installed MUST have a protective plate covering the empty slot for Class A
and/or Class B compliance.
To install the CGETF10xx-10x Media Converter Slide-in-Module:
1. Locate an empty installation slot on the PointSystem™ Chassis.
2. Carefully slide the Slide-in-Module into the installation slot, aligning the
Slide-in-Module with the installation guides.
3. Ensure that the Slide-in-Module is firmly seated against the back of the
chassis.
4. Secure the Slide-in-Module by securing the panel fastener screw
(attached to the Slide-in-Module) to the chassis front.
CFMFF100
10BASE-2
CECF100
CFMFF100
0
50½
Link Alert
E
D
CETCF100
CFETF100
CFETF110
CFMFF100
LA
PWR
RXF
RXC
LNK
COL
SPD
PWR
FRX
CRX
FLNK
CLNK
SPD
PWR
FRX
CRX
FLNK
CLNK
10/100TX
RX
TX
10/100SX
100BASE-TX
RX
TX
100BASE-FX
Link Alert
E
D
0
50½
LA
PWR
RXF
RXC
LNK
COL
LKS
PWR
LKM
10BASE-2
10BASE-FL
10BASE-T
LKS
PWR
LKM
LKS
PWR
LKM
Multimode
Singlemode
TX
RX
TX
RX
Multimode
Singlemode
TX
RX
TX
RX
Multimode
Singlemode
TX
RX
TX
RX
I
0
TERM
INIT
RX
TX
LNK
PWR
CPSMM120
SERIAL
10BASE-T
R
E
S
E
T
I
0
Connect the Twisted-Pair Copper Cable
Ensure that the correct cable type is installed to support the highest speed and
mode of operation to be selected.
Although Category 3 cable is adequate for the 10Base-T installation, Category 5
cable is strongly recommended, since Category 3 cable can not be used for
100Base-TX.
10Base-T / Ethernet collision domain
• If half-duplex cable is used, refer to the 5-Segment Rule (page 12) before
installing the 10Base-T twisted-pair copper cable.
• If full-duplex cable is used, the 5-Segment Rule does not apply. The
cable lengths are constrained by the cable requirements (see page 10).
100Base-TX / Fast Ethernet collision domain
• If half-duplex cable is used, refer to the 512-Bit Rule (page 11) before
installing the 100Base-TX twisted-pair copper cable.
• If full-duplex cable is used, the 512-Bit Rule does not apply. The cable
lengths are constrained by the cable requirements (see page 10).
NOTE: A Fast Ethernet collision domain can have ONLY ONE CLASS I
REPEATER OR TWO CLASS II REPEATERS.
Install the Twisted-Pair Copper Cable
1. Locate or build IEEE 803.2 compliant 10Base-T or 100BaseTX cables,
with straight-through RJ-45 cable, and with straight-through RJ-45
connectors installed at both ends.
2. Connect the RJ-45 connector at one end of the cable to the RJ-45 port
connector on the CBFTF10xx-10x Media Converter.
3. Connect the RJ-45 connector at the other end of the cable to the RJ-45
port connector on the other device (switch, workstation, etc.).
NOTE: The MDI (straight-through) or MDI-X (crossover) cable connection is
configured automatically, according to the network conditions.
CBFTF10xx-10x
Tech Support: 800-260-1312 International: 952-941-7600 7am-6pm CST (GMT-6:00
RJ-45 port
on the Media
Converter
RJ-45 port
on the other device
(switch, work station, etc.)