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SUPPORT
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INFORMATION
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: info@blackbox.com
®
G.703/G.704
NTU w/V35
L O S
R D
T D
E 1 L in k
G .7 0 3 /G .7 0 4 N T U
T e s t M o d e s
Lo ca l
T M
E R
N or m al
R em ot e
MARCH 2006
MT335A
w /V 3 5
51 1/ E
N or m al
51 1
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Summary of Contents for Black Box G.703/G.704 NTU w/V35
- Page 1 Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX SUPPORT FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 INFORMATION Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com...
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Page 2: Ce Notice
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. -
Page 3: Fcc Part 68
G.703/G.704 NTU W/V35 FCC PART 68 The MT335A is not intended to be connected to the pub- lic telephone network. Caution 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. - Page 4 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.
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Page 5: Table Of Contents
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 General Information ..................7 1.1 Features ....................7 1.2 Description .................. - Page 6 G.703/G.704 NTU W/V35 4.9.17 Using the V.52 (BER) Test Pattern Generator ..... 21 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...
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Page 7: General Information
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 •... -
Page 8: Configuration
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. -
Page 9: Switch Sw1-1 Through Sw1-5
G.703/G.704 NTU W/V35 2.3.18 S SW1-1 SW1-5 WITCH THROUGH A detailed description of each switch (SW1-1 through SW1-5) setting follows the summary table below. Table 1: Switch Set 1 Summary Table Position Function Factory Default Selected Option SW1-1 DTE Rate 2.048 Mbps... -
Page 10: Sw1-6 And Sw1-7 Clock Modes
G.703/G.704 NTU W/V35 Speed 1344 kbps 1408 kbps 1472 kbps 1536 kbps 1600 kbps 1664 kbps 1728 kbps 1792 kbps 1856 kbps 1920 kbps 1984 kbps Clear Channel 2048 kbps 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. -
Page 11: Sw1-8: Enable/Disable Loop Tests From Dte
G.703/G.704 NTU W/V35 2.3.20 SW1-8: E NABLE ISABLE ESTS FROM Use Switch SW1-8 to allow MT335A to enter loopback tests when the DTE raises the appropriate loop request pin. S1-8 Setting Response to DTE Loopback Request Enabled Response to DTE Loopback Request Disabled... -
Page 12: Switch Sw2-2: Crc-4 Multiframe
G.703/G.704 NTU W/V35 are sent as spaces, i.e., no pulse. Every other pulse is inverted from the previous pulse in polarity, so that the signal can be effectively transmit- ted. This means, however, that a long sequence of zeros in the data stream will cause problems, since the NTU receiving the signal relies on the signal to recover the 2.048 Mb/s clock. -
Page 13: Switch Sw2-4: Remote Digital Loopback Type
G.703/G.704 NTU W/V35 2.3.24 S SW2-4: R WITCH EMOTE IGITAL OOPBACK The user can set this switch to select the type of remote loop that will be initiated by the MT335A. If set to V.54, the MT335A will initiate a V.54 loop when Remote Loop is selected by the front panel switches. -
Page 14: Installation
G.703/G.704 NTU W/V35 3. Installation Once the MT335A is properly configured, it is ready to connect to the G.703/G.704 interface, to the serial port, and to the power source. This section describes how to make these connections. 3.4 Connecting to the G.703 Network The MT335A is equipped with a single RJ-48C jack for connections to a 120 ohm twisted pair G.703/G.704 network interface (see Figure 3). -
Page 15: Network
G.703/G.704 NTU W/V35 3.4.28 C (120 G.703 N ONNECTING THE WISTED TO THE ETWORK RJ-45 Cable (8-Wire) G.703/G.704 MT335A NETWORK SIGNAL SIGNAL PIN# 1-----------------------TX+ 2-----------------------TX- 5-----------------------RX+ 4-----------------------RX Shield 3-----------------------Shield Shield 6-----------------------Shield (No Connection) 8 (No Connection) 7 (No Connection) 6... -
Page 16: Power Connection
The MT335A powers up as soon as it is plugged into an AC outlet--there is no power switch. There are no user-serviceable parts in the power supply section of the MT335A. Contact Black Box technical support at +1 (724) 746-5500 for more information. WARNING... -
Page 17: Operation
G.703/G.704 NTU W/V35 4. Operation When the MT335A has been properly configured and installed, it should operate transparently. This sections describes power-up, LED status monitors, and the built-in loopback test modes. 4.7 Power-up Before applying power to the MT335A, please read “Power Connection” on page 16 and verify that the unit is properly connected to the appropriate power source. -
Page 18: Loop (V.54 & Telco) Diagnostics
G.703/G.704 NTU W/V35 up, signifying that the link is active. The E1 Link LED is Off when the link is down. TD & RD Glows yellow to indicate an idle condition of Binary “1” data on the respective terminal interface signals. Green indicates Binary “0” data. -
Page 19: Operating Remote Digital Loopback (Rl)
G.703/G.704 NTU W/V35 G.703/G.704 NTU G.703/G.704 NTU MT335A MT335A Receive Serial Internal Serial Recover Clocking Device Device Clocking Cable Span Clock/ Clock/ Data Data Data Data Clock/ Data MT335A MT335A Figure 6. Local Loopback for a Network Termination Application To perform a LL test, follow these steps: 1. -
Page 20: Csu Loop
G.703/G.704 NTU W/V35 G.703/G.704 NTU G.703/G.704 NTU MT335A MT335A Receive Internal Serial Serial Recover Clocking Device Device Clocking Cable Span Clock/ Clock/ Data Data Data Data Clock/ Data Figure 7. Remote Loop in a Network Extension Application There are two Remote Loops that can be initiated from the MT335A: (1) V.54 Loop, and;... -
Page 21: Using The V.52 (Ber) Test Pattern Generator
G.703/G.704 NTU W/V35 The MT335A will respond to Universal Loopback De-activate to clear all central office loops. 4.9.34 U V.52 (BER) T SING THE ATTERN ENERATOR To use the V.52 BER tests in conjunction with the Remote Digital Loopback tests (or with Local Line Loopback tests), follow these instructions: 1. -
Page 22: Specifications
G.703/G.704 NTU W/V35 A. Specifications A.1 Network Data Rate 2.048 Mbps A.2 Network Connector RJ-48C A.3 Nominal Impedance 120 ohm A.4 Line Coding Selectable AMI or HDB3 A.5 Line Framing G.703 (Unframed) or G.704/G.732 (Framed) A.6 CRC-4 Multiframing Selectable On or Off A.7 Clocking... -
Page 23: Configuration
G.703/G.704 NTU W/V35 A.11 Configuration Two 8-Position DIP Switches A.12 Power Supply +5 VDC External power supply/100–240 VAC, 50–60Hz, 0.4A A.13 Humidity Up to 90% non-condensing A.14 Temperature 0 to 50°C (32 to 122°F) A.15 Dimensions 9.0L x 5.3W x 2.0H cm (3.5L x 2.1W x 0.78H in.) -
Page 24: Interface Pin Assignment
G.703/G.704 NTU W/V35 B. Interface Pin Assignment V.35 Interface (M/34F Female Connector) (DCE Configuration) Pin # Signal SGND (Signal Ground) RTS (Request to Send) CTS (Clear to Send) DSR (Data Set Ready) CD (Carrier Detect) DTR (Data Terminal Ready) LLB (Local Line Loop) - Page 25 G.703/G.704 NTU W/V35 V.35 TO V.35 (STRAIGHT- V.35 TO V.35 (CROSS OVER THROUGH CABLE) PIN OUT CABLE) PIN OUT Function Function Frame Ground Frame Ground A Signal Ground Signal Ground B TD (A) RD (A) RD (A) TD (A) TD (B)
- Page 26 G.703/G.704 NTU W/V35 Notes ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________...
- Page 27 G.703/G.704 NTU W/V35 Notes ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________...
- Page 28 BLACK BOX ® ® NETWORK SERVICES © Copyright 2006. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...
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