Black Box G.703/G.704 NTU w/V35 Bedienungsanleitung

CUSTOMER

SUPPORT

INFORMATION

Order toll-free in the U.S. 24 hours, 7A.M. Monday to midnight Friday: 877-877-BBOX

FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746

Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018

Web site: www.blackbox.com • E-mail: [email protected]

BLACK BOX

NETWORK SERVICES

®®

G.703/G.704

NTU w/V35

511/E

Normal

511

G.703/G.704 NTU w/V35

Local

Normal

Remote

Test Modes

TMERRDTDE1 Link LOS

MARCH 2006

MT335A

G.703/G.704 NTU W/V35

CE NOTICE

The CE symbol on your Black Box equipment indicates that it is in compliance

with the Electromagnetic Compatibility (EMC) directive and the Low Voltage

Directive (LVD) of the European Union (EU). A Certiﬁcate of Compliance is

available by contacting Technical Support.

RADIO AND TV INTERFERENCE

The Multi-Rate Ethernet Extender generates and uses radio frequency energy,

and if not installed and used properly-that is, in strict accordance with the manu-

facturer’s instructions-may cause interference to radio and television reception.

The Multi-Rate Ethernet Extender has been tested and found to comply with the

limits for a Class A computing device in accordance with speciﬁcations in Sub-

part B of Part 15 of FCC rules, which are designed to provide reasonable protec-

tion from such interference in a commercial installation. However, there is no

guarantee that interference will not occur in a particular installation. If the Ether-

net Extender does cause interference to radio or television reception, which can

be determined by disconnecting the unit, the user is encouraged to try to correct

the interference by one or more of the following measures: moving the comput-

ing equipment away from the receiver, re-orienting the receiving antenna and/or

plugging the receiving equipment into a different AC outlet (such that the com-

puting equipment and receiver are on different branches).

G.703/G.704 NTU W/V35

FCC PART 68

TRADEMARKS USED IN THIS MANUAL

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

NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY STATEMENT

Instrucciones De Seguridad

1. Todas las instrucciones de seguridad y operación deberán ser leídas antes

de que el aparato eléctrico sea operado.

2. Las instrucciones de seguridad y operación deberán ser guardadas para ref-

erencia futura.

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

operación deben ser respetadas.

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

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

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

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

que sean recomendados por el fabricante.

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

recomendado por el fabricante.

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

allá a lo descrito en las instrucciones de operación. Todo otro servicio

deberá ser referido a personal de servicio caliﬁcado.

9. El aparato eléctrico debe ser situado de tal manera que su posición no interﬁ-

era su uso. La colocación del aparato eléctrico sobre una cama, sofá, alfombra

o superﬁcie similar puede bloquea la ventilación, no se debe colocar en libre-

ros o gabinetes que impidan el ﬂujo de aire por los oriﬁcios de ventilación.

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

como radiadores, registros de calor, estufas u otros aparatos (incluyendo

ampliﬁcadores) que producen calor.

Caution

The MT335A is not intended to be connected to the pub-

lic telephone network.

G.703/G.704 NTU W/V35

11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del tipo

descrito en el instructivo de operación, o como se indique en el aparato.

12. Precaución 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 recomen-

daciones 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 derra-

mados 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 aparato ha sido tirado o su cubierta ha sido dañada.

G.703/G.704 NTU W/V35

CONTENTS

CE Notice .................................................................................................... 2

Radio and TV Interference.......................................................................... 2

FCC Part 68................................................................................................. 3

Trademarks Used In This Manual............................................................... 3

Normas Oficiales Mexicanas (NOM) Electrical Safety Statement............. 3

1. General Information ....................................................................................7

1.1 Features ...............................................................................................7

1.2 Description ......................................................................................... 7

2. Configuration............................................................................................... 8

2.3 DIP Switch Configuration.................................................................. 8

2.3.1 Switch SW1-1 through SW1-5................................................ 9

2.3.2 SW1-6 and SW1-7 Clock Modes .......................................... 10

2.3.3 SW1-8: Enable/Disable Loop Tests from DTE..................... 11

2.3.4 Switch SW2-1 Line Coding: HDB3 (default) ....................... 11

2.3.5 Switch SW2-2: CRC-4 Multiframe....................................... 12

2.3.6 Switch SW2-3 Data Inversion............................................... 12

2.3.7 Switch SW2-4: Remote Digital Loopback Type................... 13

2.3.8 Switch SW2-5 Front Panel Switches..................................... 13

2.3.9 Switch SW2-6: V.54 Response Disabled (default)................ 13

3. Installation................................................................................................. 14

3.4 Connecting to the G.703 Network.................................................... 14

3.4.10 Opening the Case.................................................................. 14

3.4.11 Connecting the Twisted Pair (120 ohm) to the

G.703 Network ...................................................................... 15

3.5 Connecting the Serial Port................................................................ 15

3.5.12 Connecting to a “DTE” Device............................................ 15

3.5.13 Connecting to a “DCE” Device............................................ 15

3.6 Power Connection ............................................................................ 16

4. Operation................................................................................................... 17

4.7 Power-up........................................................................................... 17

4.8 LED Status Monitors........................................................................ 17

4.9 Loop (V.54 & Telco) Diagnostics.................................................... 18

4.9.14 Operating Local Loopback (LL) .......................................... 18

4.9.15 Operating Remote Digital Loopback (RL)........................... 19

4.9.16 CSU Loop............................................................................. 20

G.703/G.704 NTU W/V35

4.9.17 Using the V.52 (BER) Test Pattern Generator..................... 21

A. Specifications ............................................................................................ 22

A.1 Network Data Rate ...........................................................................22

A.2 Network Connector ..........................................................................22

A.3 Nominal Impedance ..........................................................................22

A.4 Line Coding ......................................................................................22

A.5 Line Framing ....................................................................................22

A.6 CRC-4 Multiframing ........................................................................22

A.7 Clocking ...........................................................................................22

A.8 Time Slot Rate ..................................................................................22

A.9 Network Data Rates ..........................................................................22

A.10 Distance ............................................................................................22

A.11 Configuration ....................................................................................23

A.12 Power Supply ....................................................................................23

A.13 Humidity ...........................................................................................23

A.14 Temperature ......................................................................................23

A.15 Dimensions .......................................................................................23

B. Interface Pin Assignment........................................................................... 24

G.703/G.704 NTU W/V35

1. General Information

Thank you for your purchase of this Black Box product. If any questions arise

during installation or use of the unit, contact Black Box Tech Support at

(724) 746-5500.

1.1 Features

•

Terminates G.703 and G.704, E1/fractional E1 service

•

Available in low-cost standalone or rack-mountable versions

•

n x 64 kbps data rates to 2 Mbps

•

V.35

•

Switch-selectable AMI or HDB3 line encoding options

•

75-ohm dual coax and 120-ohm twisted-pair G.703 connections

•

Local and remote loopback diagnostics

•

Internal, external, and G.703 network timing

•

CE and BABT approvals

•

100–240 VAC

•

Conforms to ONP requirements CTR 12 and CTR 13 for connection to interna-

tional Telecom networks

1.2 Description

The Model 2701 receives channelized G.704 (n x 64 kbps) or clear channel

E1/G.703 (2.048-Mbps) data from the Telco’s digital data network. The Model

2701 terminates the G.703 telco interface and converts the data for transmission

to a user-oriented serial. The 2701 can connect to a Router, FRAD, PABX or

Multiplexer over its serial interface at nx64kbps data rates up to 2.048 Mbps.

G.703/G.704 NTU W/V35

2. Conﬁguration

The MT335A features conﬁguration capability via hardware DIP switches. This

section describes all possible DIP switch conﬁgurations of the MT335A.

2.3 DIP Switch Conﬁguration

The MT335A has two sets of internal DIP switches that allow conﬁguration for a

wide range of applications. The sets of switches are accessed from the underside

of the MT335A. Figure 1 shows the location of the DIP switches on the bottom

of the printed circuit board.

Figure 1.

Underside of MT335A, Showing Location of DIP Switches

The MT335A DIP switches (Switch Sets 1–2) can be conﬁgured as either “ON”

or “OFF”. Figure 2 shows the orientation of the DIP switches with respect to

ON/OFF positions.

Figure 2.

Close-up of conﬁguration switches

8 7 6 5 4 3 2 1

Front

Rear

OFF

G.703/G.704 NTU W/V35

2.3.18 S

WITCH

SW1-1

THROUGH

SW1-5

A detailed description of each switch (SW1-1 through SW1-5) setting follows the

summary table below.

Table 1:

Switch Set 1 Summary Table

SW1 SW2 SW3 SW4 SW5 Speed

On On On On On 64 kbps

Off On On On On 128 kbps

On Off On On On 192 kbps

Off Off On On On 256 kbps

On On Off On On 320 kbps

Off On Off On On 384 kbps

On Off Off On On 448 kbps

Off Off Off On On 512 kbps

On On On Off On 576 kbps

Off On On Off On 640 kbps

On Off On Off On 704 kbps

Off Off On Off On 768 kbps

On On Off Off On 832 kbps

Off On Off Off On 896 kbps

On Off Off Off On 960 kbps

Off Off Off Off On 1024 kbps

On On On On Off 1088 kbps

Off On On On Off 1152 kbps

On Off On On Off 1216 kbps

Off Off On On Off 1280 kbps

Use Switches SW1-5 to set the DTE data rate.

Position Function Factory Default Selected Option

SW1-1 DTE Rate OFF

SW1-2 DTE Rate OFF

SW1-3 DTE Rate OFF

SW1-4 DTE Rate OFF

SW1-5 DTE Rate OFF

SW1-6 Clock Mode OFF Receive Recovered

SW1-7 Clock Mode OFF Receive Recovered

SW1-8 TM from DTE OFF Enabled

2.048 Mbps

Clear

Channel

}

G.703/G.704 NTU W/V35

Note

When the data rate is set to 2.048Mb/s, the unit is forced into G.703

mode, and it transmits user data on all 32 time-lots. There is no framing

information; therefore, the CRC4 MF (SW2-2) switch is ignored. In all

other rate settings, the unit employs G.704 framing; TS0 is reserved

for signaling.

2.3.19 SW1-6

AND

SW1-7 C

LOCK

ODES

Use Switches SW1-6 and SW1-7 to conﬁgure the MT335A for internal, external,

or receive recover clock mode.

Network Clock

—Transmitter timing is derived using the received line signal

(received recovered) from the network.

Internal Clock

—Transmitter timing is derived from an internal clock source.

External Clock

—Transmitter timing is derived from DTE terminal timing.

On On Off On Off 1344 kbps

Off On Off On Off 1408 kbps

On Off Off On Off 1472 kbps

Off Off Off On Off 1536 kbps

On On On Off Off 1600 kbps

Off On On Off Off 1664 kbps

On Off On Off Off 1728 kbps

Off Off On Off Off 1792 kbps

On On Off Off Off 1856 kbps

Off On Off Off Off 1920 kbps

On Off Off Off Off 1984 kbps

Off Off Off Off Off Clear Channel 2048 kbps

SW1-6 SW1-7 Clock Mode

On On Network (Received Recovered)

On Off Internal

Off On External

Off Off Network (Received Recovered)

SW1 SW2 SW3 SW4 SW5 Speed

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