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G.703 Rate and Interface Converters
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 724-746-0746
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: info@blackbox.com
JANUARY 1997
IC716A
IC716A-RJ
IC716C
RM110A
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Table of Contents
Related Manuals for Black Box IC716A
Summary of Contents for Black Box IC716A
- Page 1 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 724-746-0746 SUPPORT Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 INFORMATION Web site: www.blackbox.com • E-mail: info@blackbox.com...
- Page 2 FCC STATEMENT FEDERAL COMMUNICATIONS COMMISSION INDUSTRY CANADA 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.
- Page 3 G.703 RATE AND INTERFACE CONVERTERS INSTRUCCIONES DE SEGURIDAD (Normas Oficiales Mexicanas Electrical Safety Statement) 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 referencia futura. 3.
- Page 4 TRADEMARK TRADEMARKS USED IN THIS MANUAL Any trademarks mentioned in this manual are acknowledged to be the property of the trademark owners. WARNING! Always observe standard safety precautions during installation, operation, and maintenance of this product. To avoid the possibility of electrical shock, disconnect the power cord from the power source before you open up the unit or perform any repairs.
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Page 5: Table Of Contents
G.703 RATE AND INTERFACE CONVERTERS Contents Chapter Page 1. Specifications ............... .5 2. -
Page 6: Specifications
120Ω balanced Protocol — Sync or async, full duplex Connectors — IC716A: (1) 5-screw terminal block; IC716A-RJ: (1) RJ-45 female; Both: (1) DB25 female Front-panel pushbuttons DIG (Local Digital Loopback), ANA Diagnostics — (Local Analog Loopback), REM (Remote Digital Loopback), or (V.54) activated from RS-232/V.24 DTE;... - Page 7 (or coaxial cable) Size — IC716A, IC716A-RJ: 1.8"H x 7.6"W x 9.5"D (4.6 x 19.3 x 24.1 cm); IC716C: 9"H x 6.2"W x 1"D (22.9 x 15.8 x 2.5 cm) Weight —...
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Page 8: Introduction
CHAPTER 2: Introduction 2. Introduction 2.1 General Description The G.703 Rate and Interface Converter allows low-speed V.24 equipment to be connected to a G.703 codirectional (64 Kbps) interface. This conversion enables connection of low-speed data channels to the PCM network. The rate conversion is performed according to CCITT I.463 (V.110) and I.460 standards. This rate conversion also enables access to ISDN terminal adapters through the telecommunication network. -
Page 9: Functional Description
G.703 RATE AND INTERFACE CONVERTERS 2.2 Functional Description When reading this section refer to the diagram below. EXTERNAL/RECEIVE CLOCK WITH EXTERNAL BUFFER TXC 64 KHz G.703 TRANS- RS-232 INTERFACE HIGH E.CK FIFO INTER- SPEED FACE ASYNC/SYNC INTERNAL RATE RD (LOW SPEED) CONVERTER ADAPTOR LOW-SPEED... -
Page 10: Rate Adapter
CHAPTER 2: Introduction RCVB V.24 G.703 G.703 V.24 G.703 G.703 Rate and G.703 Rate and NETWORK Interface Converter Interface Converter EXTERNAL CLOCK EXTERNAL CLOCK SYNCHRONIZATION Figure 2-2. G.703 Rate and Interface Converter Synchronization Options. 2.2.2 R DAPTER The rate adapter implements the V.110 (I.463) standard. RTS, DTR, and incoming low-speed data are transmitted to the line (on 64 KHz) in frames. - Page 11 G.703 RATE AND INTERFACE CONVERTERS Internal, Receive CLOCK AND DATA EXT or RCVB FIFO Speed G.703 SPEED SIDE SIDE 64 Kbps Internal External EXT CLK High Speed Receive CLOCK AND DATA FIFO Low Speed Figure 2-3. Clock Diagram. Digital Transmission Media Low Speed TC &...
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Page 12: Installation
CHAPTER 3: Installation 3. Installation This chapter provides instructions for the mechanical and electrical installation of the G.703 Rate and Interface Converter standalone models. If you need to install the Card, go to Appendix A. Once you’ve completed the installation, refer to Chapter 4 for operating information and system checkout to assure normal operation. -
Page 13: Rear-Panel Connectors
G.703 RATE AND INTERFACE CONVERTERS 3.3.2 R ANEL ONNECTORS The digital V.24/RS-232 interface on the rear panel of the Converter is a 25-pin connector. The line connector may be either an RJ-45 female or a 5-screw terminal block. G.703 Side RJ-45 Female Connector The pin assignments for the RJ-45 connector are listed below. - Page 14 CHAPTER 3: Installation Table 3-1. Strap Selection (Strap identity numbers correspond to PCB Strap Locations of Figure 3-1) Strap Identity Function Possible Settings Factory Setting Selects the low-speed data rate. 0 — 0.6 Baud Rates 1 — 1.2 (Kbps) 2 — 2.4 3 —...
- Page 15 G.703 RATE AND INTERFACE CONVERTERS 0-0.6 1-1.2 2-2.4 3-4.8 4-7.1 5-9.6 6-14.4 7-19.2 Figure 3-1. Layout of the G.703 Rate and Interface Converter Board. (Refer to Table 3-1 for strap selection.)
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Page 16: Operation
CHAPTER 4: Operation 4. Operation IMPORTANT! Make sure you’ve gone through all the installation procedures in Chapter 3 before attempting to operate the G.703 Rate and Interface Converter. 4.1 Buttons and Indicators The test buttons and LED indicators are located on the Converter’s front panel. Press the button to activate (turn ON) the corresponding test. -
Page 17: Operating Procedure
G.703 RATE AND INTERFACE CONVERTERS 4.2 Operating Procedure The G.703 Rate and Interface Converter requires no operator attention once it is installed (refer to Chapter 3), except for occasional monitoring of the front-panel indicators. Intervention is only required when: • The Converter has to be adapted to new operational requirements, or •... -
Page 18: Tests And Diagnostics
CHAPTER 5: Tests and Diagnostics 5. Tests and Diagnostics This chapter contains procedures for performing system diagnostic tests and fault isolation. 5.1 Loop Tests (DIG, ANA, and REM) The loop test buttons (DIG, ANA, and REM) and the LED indicators built into the Converter allow rapid checking of the data terminals, the Converter, and the lines. -
Page 19: Communication Link Tests
G.703 RATE AND INTERFACE CONVERTERS DEPRESSED DATA XMTR DATA TERMINAL LINE RCVR DATA G.703 Rate and Interface Converter Figure 5-2. Local Interface Converter in Local Loopback. a) Press the ANA (Local Loopback) button. The TEST indicator should light. The Converter’s transmit output is not connected to its own receiver. -
Page 20: Local Digital Loopback
CHAPTER 5: Tests and Diagnostics DEPRESSED DATA XMTR RCVR LOCAL REMOTE DATA DATA TERMINAL TERMINAL RCVR XMTR DATA Local Converter Remote Converter Figure 5-3. Remote Interface Converter in Digital Loopback. 5.4.2 L OCAL IGITAL OOPBACK This test is activated by pressing the DIG button. The test consists of looping the received data back to the remote Interface Converter, as shown in Figure 5-4. -
Page 21: Appendix A. The Rm110A Rack And The G.703 Rate And Interface Converter Card
G.703 RATE AND INTERFACE CONVERTERS Appendix A. The RM110A Rack and the G.703 Rate & Interface Converter Card A.1 Rack Description The RM110A rack consists of a power supply and up to fourteen plug-in G.703 Rate and Interface Converter Cards. The rear panel consists of fourteen terminal blocks and fourteen connectors. Each terminal block provides five screw connections for connecting the transmit and receive lines. -
Page 22: Power Supply
APPENDIX A: The RM110A Rack and the G.703 Rate and Interface Converter Card A.2 Power Supply The power supply can accept either 115 or 230 VAC, depending upon the rated voltage of the unit. Essentially, it consists of a power-line transformer, a fuse, and an operating switch. All power-regulating circuitry is located on the Converter cards themselves. -
Page 23: Appendix B. V.24/Rs-232 Interconnection
G.703 RATE AND INTERFACE CONVERTERS Appendix B. V.24/RS-232 Interconnection Table B-1. DTE Interface Signal Assignments V.24 RS-232C DTE Pin Signal Name Description Protective Ground Chassis ground. May be isolated from Signal Ground (refer to GND Strap in Table 3-1). Signal Ground Common signal and DC power supply ground. - Page 24 APPENDIX B: V.24/RS-232 Interconnection Table B-1 (continued). DTE Interface Signal Assignments V.24 RS-232C DTE Pin Signal Name Description Receiver Signal A receive data-rate clock output for use by external data sink. Positive clock transitions correspond to data transitions. — Test Indicator A control-signal output from the Converter.
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Page 25: Appendix C. Rack Adapter Installation Kits
G.703 RATE AND INTERFACE CONVERTERS Appendix C. Rack Adapter Installation Kits The G.703 Rate and Interface Converter’s exterior casing was designed to simplify access to the interior strap settings and to simplify installation in 19-inch racks. You can access the Converter’s interior by releasing two rear-panel screws and then using them as levers to pull out the interior like a drawer. -
Page 26: Rack Adapter Kit-Dual-Unit Installation
APPENDIX C: Rack Adapter Installation Kits After attaching the brackets, the unit is ready for installation in the 19-inch rack. Fasten the brackets to the side rails of the 19-inch rack by means of four screws (not included in the kit). C.2 Rack Adapter Kit—Dual-Unit Installation The rack adapter components for two units include two long side rails (one for each unit) which slide one within the other to fasten the two units together, and two short side brackets which fasten the two... - Page 27 G.703 RATE AND INTERFACE CONVERTERS...
- Page 28 © Copyright 1997. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...