Black Box MT660A-MM User Manual

Local Dual Loop Back
Remote & Local Loop Back
Force 1’s to Fiber
Force 1’s Copper

Normal

US Power Supply International Power Supply

MT660A-MM MT660A-MM-E
MT661A-SM MT661A-SM-E
MT662A-MSC MT662AE-MSC

MT663A-SSC MT663AE-SSC
MT664A-SSC MT664AE-SSC

FlexPoint™ T1/E1 Copper to Fiber

Line Driver

CUSTOMER

SUPPORT

INFORMATION

Order toll-free in the U.S.: Call 877-877-BBOX
(outside U.S. call 724-746-5500)

FREE technical support 24 hours a day, 7 days a
week; Call 724-746-5500 or fax [phone]

Mailing address: Black Box Corporation,
1000 Park Drive, Lawrence, PA 15055-1018

Web site: www.blackbox.com
E-mail: [e-mail]

Page 1 Page 2

Description:

The FlexPoint T1/E1 connects T1 and E1 devices, such as
PBXs, CSUs and routers, via multimode (MM) or single-mode
(SM) fiber. Designed to extend the standard T1/E1 twisted p air
or Coax network distances over fiber, this converter provides
protection from environmental noise and effectively increases
high-speed network reliability. The following models are
described here.

Model # Fiber Type Max Distance

MT660A-MM MM, ST , 1300nm 5km / 3.1mi
MT661A-SM SM, ST, 1300nm 28km / 16.8mi
MT662A-MSC MM, SC, 1300nm 5km / 3.1mi
MT663A-SSC SM, SC, 1300nm 28km / 16.8mi
MT664A-SSC SM, SC, 1300nm 58km / 36 mi
MT660A-MM-E MM, ST , 1300nm 5km / 3.1mi
MT661A-SM-E SM, ST, 1300nm 28km / 16.8mi
MT662AE-MSC MM, SC, 1300nm 5km / 3.1mi
MT663AE-SSC SM, SC, 1300nm 28km / 16.8mi
MT664AE-SSC SM, SC, 1300nm 58km / 36 mi

Power Adapter Notice

1. When Using in a stand-alone configuration, this product
is intended to be and must be used only with a Listed
Direct Plug-In Power Unit marked “Class 2” and rated
at 9VDC, 1 Amp.

2. This product should always be used only with the supplied
power unit .

3. Models shipped with international power supplies are
capable of auto switching from 100-230V, and are
supplied with a U.S. type NEMA 5-15 power cable.

4. For products being shipped outside of the U.S., the
user is required to install a properly grounded IEC

320 appliance cable with a minimum rating of 10 AMPs.

5. User-supplied cables must meet the required safety
agency approvals, applicable international standards
and electrical ratings for the region.

WARNING!

Before inserting the Power Adapter, verify that the

power on the unit is appropriate for your AC line

voltage source.

Mounting instructions:

The FlexPoint Fiber Converter can be solo-mounted using
a wall-mounting kit, or rack-mounted using a 5-unit shelf,
or a high-density FlexPoint 14-Unit Power-Redundant
Chassis.

Fiber Optic Cable Attachment:

Connect the fiber cables between the FlexPoint T1/E1
converters. The transmit (Tx) must attach to the receive
side and the receive (Rx) must attach to the transmit side.

Note: Use fiber cables that are compliant with the
specifications that are outlined in fiber cable specifications.

Copper Cable Attachment:

RJ-45/RJ-48 T1/E1 connector

Connect to the RJ-45/48 connector on the FlexPoint T1/
E1 converter via a category 3 or better cable (Category 5
is recomended) and attach the other end to the network
equipment. (The twisted pair connection requires two active
pairs in a T1/E1 environment. The active pairs are pins
1&2 and pins 4&5. Only dedicated wire pairs should be
used for the active pins.) Set the UTP DCE / DTE switch
for the RJ-45/48 port to the appropriate setting.

Page 3

Note: Use copper cables that are compliant with the
specifications that are outlined in copper cable
specifications.

Coax E1 Connector

Attach the BNC to the FlexPoint T1/E1 converter and
attach the other end of the BNC to the network equipment.

Note: Use copper cables that are compliant with the
specifications that are outlined in copper cable
specifications.

Switch Settings:

UTP DCE/DTE setting

The UTP DCE/DTE switch is used to eli minate the need for
crossover and custom cables to connect devices together when
using the RJ-45/48 port. Set this switch to DCE to use a
straight-through cable and to DTE when a crossover-cable
would be required.

Twisted
Pair #1

Twisted
Pair #2

DCE

TTIP

TRING

RTIP

RRING

Twisted
Pair #1

Twisted
Pair #2

RTIP

1
2

RRING

TTIP

4
5

TRING

DTE

RTIP

RRING

TTIP

TRING

TTIP

TRING

RTIP

RRING

1
2

4
5

T1/E1 Copper line configuration settings

The T1/E1 copper line codes and line lengths are configured
using dip switches located on the side of the FlexPoint T1/E1
media converter.

Page 4

Line Type Port Type Distances Switch Positions

1 2 3 4
T1 DSX-1 RJ-45/48 0’ - 133’ BBBB
T1 DSX-1 RJ-45/48 133’ - 266’ BBBA
T1 DSX-1 RJ-45/48 266’ - 399’ BBAB
T1 DSX-1 RJ-45/48 399’ - 533’ BBAA
T1 DSX-1 RJ-45/48 533’ - 655’ BABB

T1 DS-1 RJ-45/48 0 dB BBBB
T1 DS-1 RJ-45/48 -7.5 dB BABA
T1 DS-1 RJ-45/48 -15.0 dB BAAB
T1 DS-1 RJ-45/48 -22.5 dB BAAA

E1 75 Ω Coax/BNC Standard ABBB
E1 120 Ω RJ-45/48 Standard ABBA
E1 75 Ω Coax/BNC Extended ABAB
E1 120 Ω RJ-45/48 Extended ABAA

Operational switch settings and functions

The following operational switches located on the front of
the FlexPoint T1/E1 converter are to assist in installation
and fault isolation.

Page 5 Page 6

Local loop-back (L/LB)

This switch will set the FlexPoint T1/E1 converter in a
loop-back mode on both the fiber and copper connections.
By returning the switch to the normal position the unit will
resume to normal operation.

Cu-Rx

Cu-Tx

Loopback Enabled

FO-Tx

FO-Rx

Remote loop-back (R+L/LB)

This switch will allow the entire fiber segment to be tested
at either of the FlexPoint T1/E1 converters without having
to set switches on both units. When set in this mode of
operation the local unit is switched in a local loop-back
mode. And in addition to the local loop-back mode of
operation the fiber Tx port will be further encoded to carry
a remote loop-back protocol. This remote loop-back
protocol will set the far end FlexPoint T1/E1 converter to
remote loop-back mode of operation and return a signal to
the sending unit. An LED on the local and remote FlexPoint
T1/E1 converters will show a confirmation that the fiber
segment is communicating properly between devices. By
returning the switch to the normal position it will resume
to normal operation.

Cu-Rx

Cu-Tx

Remote Loop Request

Over Fiber

FO-Tx

FO-Rx

FO-Rx

FO-Tx

Cu-Tx

Cu-Rx

Local loop-back and Remote loop-back

When both Local and Remote Loop-back are set to the
Normal position, the FlexPoint T1/E1 uses the default B8ZS
data format. When both switches are turned to their On
position, it uses the AMI data format.

Transmit/force 1’s to fiber

This switch is used to insert an “all ones” pattern into the
data stream being transmitted out of the fiber port on the
FlexPoint T1/E1 converter. Data being received on the coax

or twisted pair will be disabled and data being received on
the fiber is passed through to the coax or twisted pair side.
By returning the switch to the normal position the unit will
resume to normal operation.

Transmit/force 1’s to Coax or UTP

This switch is used to insert an “all ones” pattern into the
data stream being transmitted out of the coax or twisted
pair on the FlexPoint T1/E1 converter. Dat a being received
on the fiber will be disabled and data being received on
the coax or twisted pair is passed through to the fiber side.
By returning the switch to the normal position the unit will
resume to normal operation.

Alarm Relay Contacts

The FlexPoint T1/E1 converter also features dry relay
contacts for optionally connecting the media converter into
a separate T1/E1 alarm circuit. The relay closes when a
loss of power or when signal detect is lost to the copper or
fiber connection.

Relay

Page 7 Page 8

RJ-45/RJ-48

3

6

Operational rating on relay pins 3 & 6: 0-220VDC max 2A

LED Indicators

LED Color Status Description
Power:

Yellow On Power applied

Fiber:

Green Off No signal detect

On Signal detect
Blink All ones received

UTP/Coax:

Green Off No signal detect

On Signal detect

Test:

Blink All ones received

Yellow Off Normal operation

On L/LB or All 1’s Test mode
Blink R+L/LB Received master
Fast Blink R+L/LB Received slave

Fiber Cable Specifications:

Multimode

Cable: 50/125, 62.5/125, 100/140 μm
Wavelength: 1300nm
Max Distance: 5km / 3.1mi

Single-mode

Cable: 9/125 μm
Wavelength: 1300nm
Max Distance: 28km / 16.8mi

Single-mode long-haul

Cable: 9/125 μm

Wavelength: 1300nm
Max Distance: 58km / 36mi

Copper Cable Specifications:

Twisted-Pair cable for T1

Gauge 22 to 24 AWG
Impedance 100
Impedance characteristic 2.6 dB / 100m @ 1.0 MHz
Maximum distance 6,000 ft

Ω + 10%

Twisted-Pair cable for E1

Gauge 22 to 24 AWG
Impedance 120
Impedance characteristic 2.6 dB / 100m @ 1.0 MHz
Maximum distance 8,000 ft

Ω + 10%

Coax cable for E1

Gauge 22 to 24 AWG
Impedance 75
Impedance characteristic 2 dB / 100m @ 1.0 MHz
Maximum distance 8,000 ft

Ω + 10%

1000 Park Drive z Lawrence, PA 15055-1018

724-746-5500 z Fax [phone]

Page 9

All applied-for and registered trademarks are the property of their
respective owners.

FEDERAL COMMUNICATIONS COMMISSION AND
CANADIAN DEPARTMENT OF COMMUNICATIONS

RADIO FREQUENCY INTERFERENCE STATEMENTS

This equipment generates, uses, and can radiate radio frequency
energy and if not installed and used properly, that is, in strict
accordance with the manufacturer’s instructions, may cause
interference to radio communication. It has been tested and found
to comply with the limits for a Class A computing device in
accordance with the specifications in subpart J of Part 15 of FCC
rules, which are designed to provide reasonable protection against
such interference when the equipment is operated in a commercial
environment. Operation of this equipment in a residential area is
likely to be cause interference, in which case the user at his own
expense will be required to take whatever measures may be
necessary to correct the interference.

Changes or modifications not expressly approved by the party
responsible for compliance could void the user’s authority to
operate the equipment.

This digital apparatus does not exceed the Class A limits for radio
noise emission from digital apparatus set out in the Radio
Interference Regulation of the Canadian Department of
Communications.

Le présent appareil numérique n’émet pas de bruits
radioélectriques dépassant les limites applicables aux appareils
numéirques de las classe A prescrites dans le Règlement sur le
brouillage radioélectrique publié par le ministère des
Communications du Canada.

TRADEMARKS

Page 10

NORMAS OFICIALES MEXICANAS (NOM)

1. Todas las instrucciones de seguridad y operación deberán ser

2. Las instrucciones de seguridad y operación deberán ser

3. Todas las advertencias en el aparato eléctrico y en sus

4. Todas las instrucciones de operación y uso deben ser seguidas.

5. El aparato eléctrico no deberá ser usado cerca del agua—por

6. El aparato eléctrico debe ser usado únicamente con carritos o

7. El aparato eléctrico debe ser montado a la pared o al techo sólo

8. Servicio—El usuario no debe intentar dar servicio al equipo

9. El aparato eléctrico debe ser situado de tal manera que su

10. El equipo eléctrico deber ser situado fuera del alcance de

11. El aparato eléctrico deberá ser connectado a una fuente de

ELECTRICAL SAFETY STATEMENT

leídas antes de que el aparato eléctrico sea operado.

guardadas para referencia futura.

instrucciones de operación deben ser respetadas.

ejemplo, cerca de la tina de baño, lavabo, sótano mojado o
cerca de una alberca, etc.

pedelstales que sean recomendados por el fabricante.

como sea recomendado por el fabricante.

eléctrico más allá a lo descrito en las instrucciones de
operación. Todo otro servicio deberá ser referido a personal de
servicio calificado.

posición no interfiera su uso. La colocación del aparato
eléctrico sobre una cama, sofá, alfombra or superficie similar
puede bloquea la ventilación, no se debe colocar en libreros o
gabinetes que impidan el flujo de aire por los orificios de
ventilación.

fuentes de calor como radiadores, registros de calor, estufas u
ostros aparatos (incluyendo amplificadores) que producen
calor.

poder sólo del tipo descrito en el instructivo de operación, o
como se indique en el aparato.

Page 11 Page 12

12. Precación debe ser tomada de tal manera que la tierra fisica y
la polarización del equipo no sea eliminada.

13. Los cables de la fuente de poder deben ser guiados de tal
manera que no sean pisados ni pellizcados por objetos
colocados sobre o contra ellos, poniendo particular atención a
los contactos y receptáculos donde salen del aparato.

14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a
las recomendaciones del fabricante.

15. En caso de existir, una antena externa deberá ser localizada
lejos de las lineas de energia.

16. El cable de corriente deberá ser desconectado del cuando el
equipo no sea usado por un largo periodo de tiempo.

17. Cuidado debe ser tomado de tal manera que objectos liquidos
no sean derramados sobre la cubierta u orificios de ventilación.

18. Servicio por personal calificado deberá ser provisto cuando:
A: El cable de poder o el contacto ha sido dañado; u
B: Objectos han caído o líquido ha sido derramado dentro del

aparato; o
C: El aparato ha sido expuesto a la lluvia; o
D: El aparato parece no operar normalmente o muestra un

cambio en su desempeño; o
E: El aparto ha sido tirado o su cubierta ha sido dañada.

040-01021-001E 3/06

Local loop-back and Remote loop-back

Local Dual Loop Back
Remote & Local Loop Back
Force 1’s to Fiber
Force 1’s Copper

Normal

When both Local and Remote Loop-back are set to the
Normal position, the FlexPoint T1/E1 uses the default B8ZS
data format. When both switches are turned to their On
position, it uses the AMI data format.

Transmit/force 1’s to fiber

This switch is used to insert an “all ones” pattern into the
data stream being transmitted out of the fiber port on the
FlexPoint T1/E1 converter. Data being received on the coax

or twisted pair will be disabled and data being received on
the fiber is passed through to the coax or twisted pair side.
By returning the switch to the normal position the unit will
resume to normal operation.

Transmit/force 1’s to Coax or UTP

This switch is used to insert an “all ones” pattern into the
data stream being transmitted out of the coax or twisted
pair on the FlexPoint T1/E1 converter. Dat a being received
on the fiber will be disabled and data being received on
the coax or twisted pair is passed through to the fiber side.
By returning the switch to the normal position the unit will
resume to normal operation.

Alarm Relay Contacts

The FlexPoint T1/E1 converter also features dry relay
contacts for optionally connecting the media converter into
a separate T1/E1 alarm circuit. The relay closes when a
loss of power or when signal detect is lost to the copper or
fiber connection.

Relay

Page 7 Page 8

RJ-45/RJ-48

3

6

Operational rating on relay pins 3 & 6: 0-220VDC max 2A

LED Indicators

LED Color Status Description
Power:

Yellow On Power applied

Fiber:

Green Off No signal detect

On Signal detect
Blink All ones received

UTP/Coax:

Green Off No signal detect

On Signal detect

Test:

Blink All ones received

Yellow Off Normal operation

On L/LB or All 1’s Test mode
Blink R+L/LB Received master
Fast Blink R+L/LB Received slave

Fiber Cable Specifications:

Multimode

Cable: 50/125, 62.5/125, 100/140 μm
Wavelength: 1300nm
Max Distance: 5km / 3.1mi

Single-mode

Cable: 9/125 μm
Wavelength: 1300nm
Max Distance: 28km / 16.8mi

Single-mode long-haul

Cable: 9/125 μm

Wavelength: 1300nm
Max Distance: 58km / 36mi

Copper Cable Specifications:

Twisted-Pair cable for T1

Gauge 22 to 24 AWG
Impedance 100
Impedance characteristic 2.6 dB / 100m @ 1.0 MHz
Maximum distance 6,000 ft

Ω + 10%

Twisted-Pair cable for E1

Gauge 22 to 24 AWG
Impedance 120 Ω + 10%
Impedance characteristic 2.6 dB / 100m @ 1.0 MHz
Maximum distance 8,000 ft

Coax cable for E1

Gauge 22 to 24 AWG
Impedance 75
Impedance characteristic 2 dB / 100m @ 1.0 MHz
Maximum distance 8,000 ft

Ω + 10%

1000 Park Drive z Lawrence, PA 15055-1018

724-746-5500 z Fax [phone]

Page 9

All applied-for and registered trademarks are the property of their
respective owners.

FEDERAL COMMUNICATIONS COMMISSION AND
CANADIAN DEPARTMENT OF COMMUNICATIONS

RADIO FREQUENCY INTERFERENCE STATEMENTS

This equipment generates, uses, and can radiate radio frequency
energy and if not installed and used properly, that is, in strict
accordance with the manufacturer’s instructions, may cause
interference to radio communication. It has been tested and found
to comply with the limits for a Class A computing device in
accordance with the specifications in subpart J of Part 15 of FCC
rules, which are designed to provide reasonable protection against
such interference when the equipment is operated in a commercial
environment. Operation of this equipment in a residential area is
likely to be cause interference, in which case the user at his own
expense will be required to take whatever measures may be
necessary to correct the interference.

Changes or modifications not expressly approved by the party
responsible for compliance could void the user’s authority to
operate the equipment.

This digital apparatus does not exceed the Class A limits for radio
noise emission from digital apparatus set out in the Radio
Interference Regulation of the Canadian Department of
Communications.

Le présent appareil numérique n’émet pas de bruits
radioélectriques dépassant les limites applicables aux appareils
numéirques de las classe A prescrites dans le Règlement sur le
brouillage radioélectrique publié par le ministère des
Communications du Canada.

TRADEMARKS

Page 10

NORMAS OFICIALES MEXICANAS (NOM)

1. Todas las instrucciones de seguridad y operación deberán ser

2. Las instrucciones de seguridad y operación deberán ser

3. Todas las advertencias en el aparato eléctrico y en sus

4. Todas las instrucciones de operación y uso deben ser seguidas.

5. El aparato eléctrico no deberá ser usado cerca del agua—por

6. El aparato eléctrico debe ser usado únicamente con carritos o

7. El aparato eléctrico debe ser montado a la pared o al techo sólo

8. Servicio—El usuario no debe intentar dar servicio al equipo

9. El aparato eléctrico debe ser situado de tal manera que su

10. El equipo eléctrico deber ser situado fuera del alcance de

11. El aparato eléctrico deberá ser connectado a una fuente de

ELECTRICAL SAFETY STATEMENT

leídas antes de que el aparato eléctrico sea operado.

guardadas para referencia futura.

instrucciones de operación deben ser respetadas.

ejemplo, cerca de la tina de baño, lavabo, sótano mojado o
cerca de una alberca, etc.

pedelstales que sean recomendados por el fabricante.

como sea recomendado por el fabricante.

eléctrico más allá a lo descrito en las instrucciones de
operación. Todo otro servicio deberá ser referido a personal de
servicio calificado.

posición no interfiera su uso. La colocación del aparato
eléctrico sobre una cama, sofá, alfombra or superficie similar
puede bloquea la ventilación, no se debe colocar en libreros o
gabinetes que impidan el flujo de aire por los orificios de
ventilación.

fuentes de calor como radiadores, registros de calor, estufas u
ostros aparatos (incluyendo amplificadores) que producen
calor.

poder sólo del tipo descrito en el instructivo de operación, o
como se indique en el aparato.

Page 11 Page 12

12. Precación debe ser tomada de tal manera que la tierra fisica y
la polarización del equipo no sea eliminada.

13. Los cables de la fuente de poder deben ser guiados de tal
manera que no sean pisados ni pellizcados por objetos
colocados sobre o contra ellos, poniendo particular atención a
los contactos y receptáculos donde salen del aparato.

14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a
las recomendaciones del fabricante.

15. En caso de existir, una antena externa deberá ser localizada
lejos de las lineas de energia.

16. El cable de corriente deberá ser desconectado del cuando el
equipo no sea usado por un largo periodo de tiempo.

17. Cuidado debe ser tomado de tal manera que objectos liquidos
no sean derramados sobre la cubierta u orificios de ventilación.

18. Servicio por personal calificado deberá ser provisto cuando:
A: El cable de poder o el contacto ha sido dañado; u
B: Objectos han caído o líquido ha sido derramado dentro del

aparato; o
C: El aparato ha sido expuesto a la lluvia; o
D: El aparato parece no operar normalmente o muestra un

cambio en su desempeño; o
E: El aparto ha sido tirado o su cubierta ha sido dañada.

040-01021-001E 3/06

MT660A-MM MT660A-MM-E
MT661A-SM MT661A-SM-E
MT662A-MSC MT662AE-MSC

MT663A-SSC MT663AE-SSC
MT664A-SSC MT664AE-SSC

FlexPoint™ T1/E1 Copper to Fiber

Line Driver

CUSTOMER

SUPPORT

INFORMATION

Order toll-free in the U.S.: Call 877-877-BBOX
(outside U.S. call 724-746-5500)

FREE technical support 24 hours a day, 7 days a
week; Call 724-746-5500 or fax [phone]

Mailing address: Black Box Corporation,
1000 Park Drive, Lawrence, PA 15055-1018

Web site: www.blackbox.com
E-mail: [e-mail]

Page 1 Page 2

Description:

The FlexPoint T1/E1 connects T1 and E1 devices, such as
PBXs, CSUs and routers, via multimode (MM) or single-mode
(SM) fiber. Designed to extend the standard T1/E1 twisted p air
or Coax network distances over fiber, this converter provides
protection from environmental noise and effectively increases
high-speed network reliability. The following models are
described here.

Model # Fiber Type Max Distance

MT660A-MM MM, ST , 1300nm 5km / 3.1mi
MT661A-SM SM, ST, 1300nm 28km / 16.8mi
MT662A-MSC MM, SC, 1300nm 5km / 3.1mi
MT663A-SSC SM, SC, 1300nm 28km / 16.8mi
MT664A-SSC SM, SC, 1300nm 58km / 36 mi
MT660A-MM-E MM, ST , 1300nm 5km / 3.1mi
MT661A-SM-E SM, ST, 1300nm 28km / 16.8mi
MT662AE-MSC MM, SC, 1300nm 5km / 3.1mi
MT663AE-SSC SM, SC, 1300nm 28km / 16.8mi
MT664AE-SSC SM, SC, 1300nm 58km / 36 mi

Power Adapter Notice

1. When Using in a stand-alone configuration, this product
is intended to be and must be used only with a Listed
Direct Plug-In Power Unit marked “Class 2” and rated
at 9VDC, 1 Amp.

2. This product should always be used only with the supplied
power unit .

3. Models shipped with international power supplies are
capable of auto switching from 100-230V, and are
supplied with a U.S. type NEMA 5-15 power cable.

4. For products being shipped outside of the U.S., the
user is required to install a properly grounded IEC

320 appliance cable with a minimum rating of 10 AMPs.

5. User-supplied cables must meet the required safety
agency approvals, applicable international standards
and electrical ratings for the region.

WARNING!

Before inserting the Power Adapter, verify that the

power on the unit is appropriate for your AC line

voltage source.

Mounting instructions:

The FlexPoint Fiber Converter can be solo-mounted using
a wall-mounting kit, or rack-mounted using a 5-unit shelf,
or a high-density FlexPoint 14-Unit Power-Redundant
Chassis.

Fiber Optic Cable Attachment:

Connect the fiber cables between the FlexPoint T1/E1
converters. The transmit (Tx) must attach to the receive
side and the receive (Rx) must attach to the transmit side.

Note: Use fiber cables that are compliant with the
specifications that are outlined in fiber cable specifications.

Copper Cable Attachment:

RJ-45/RJ-48 T1/E1 connector

Connect to the RJ-45/48 connector on the FlexPoint T1/
E1 converter via a category 3 or better cable (Category 5
is recomended) and attach the other end to the network
equipment. (The twisted pair connection requires two active
pairs in a T1/E1 environment. The active pairs are pins
1&2 and pins 4&5. Only dedicated wire pairs should be
used for the active pins.) Set the UTP DCE / DTE switch
for the RJ-45/48 port to the appropriate setting.

Page 3

Note: Use copper cables that are compliant with the
specifications that are outlined in copper cable
specifications.

Coax E1 Connector

Attach the BNC to the FlexPoint T1/E1 converter and
attach the other end of the BNC to the network equipment.

Note: Use copper cables that are compliant with the
specifications that are outlined in copper cable
specifications.

Switch Settings:

UTP DCE/DTE setting

The UTP DCE/DTE switch is used to eliminate the need for
crossover and custom cables to connect devices together when
using the RJ-45/48 port. Set this switch to DCE to use a
straight-through cable and to DTE when a crossover-cable
would be required.

Twisted
Pair #1

Twisted
Pair #2

DCE

TTIP

TRING

RTIP

RRING

Twisted
Pair #1

Twisted
Pair #2

RTIP

1
2

RRING

TTIP

4
5

TRING

DTE

RTIP

RRING

TTIP

TRING

TTIP

TRING

RTIP

RRING

1
2

4
5

T1/E1 Copper line configuration settings

The T1/E1 copper line codes and line lengths are configured
using dip switches located on the side of the FlexPoint T1/E1
media converter.

Page 4

Line Type Port Type Distances Switch Positions

1 2 3 4

T1 DSX-1 RJ-45/48 0’ - 133’

BBBB

T1 DSX-1 RJ-45/48 133’ - 266’ BBBA
T1 DSX-1 RJ-45/48 266’ - 399’ BBAB
T1 DSX-1 RJ-45/48 399’ - 533’ BBAA
T1 DSX-1 RJ-45/48 533’ - 655’ BABB

T1 DS-1 RJ-45/48 0 dB BBBB
T1 DS-1 RJ-45/48 -7.5 dB BABA
T1 DS-1 RJ-45/48 -15.0 dB BAAB
T1 DS-1 RJ-45/48 -22.5 dB BAAA

E1 75 Ω Coax/BNC Standard ABBB
E1 120 Ω RJ-45/48 Standard ABBA
E1 75 Ω Coax/BNC Extended ABAB
E1 120 Ω RJ-45/48 Extended ABAA

Operational switch settings and functions

The following operational switches located on the front of
the FlexPoint T1/E1 converter are to assist in installation
and fault isolation.

Page 5 Page 6

Local loop-back (L/LB)

This switch will set the FlexPoint T1/E1 converter in a
loop-back mode on both the fiber and copper connections.
By returning the switch to the normal position the unit will
resume to normal operation.

Cu-Rx

Cu-Tx

Loopback Enabled

FO-Tx

FO-Rx

Remote loop-back (R+L/LB)

This switch will allow the entire fiber segment to be tested
at either of the FlexPoint T1/E1 converters without having
to set switches on both units. When set in this mode of
operation the local unit is switched in a local loop-back
mode. And in addition to the local loop-back mode of
operation the fiber Tx port will be further encoded to carry
a remote loop-back protocol. This remote loop-back
protocol will set the far end FlexPoint T1/E1 converter to
remote loop-back mode of operation and return a signal to
the sending unit. An LED on the local and remote FlexPoint
T1/E1 converters will show a confirmation that the fiber
segment is communicating properly between devices. By
returning the switch to the normal position it will resume
to normal operation.

Cu-Rx

Cu-Tx

Remote Loop Request

Over Fiber

FO-Tx

FO-Rx

FO-Rx

FO-Tx

Cu-Tx

Cu-Rx