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ATL AM2048A User Manual

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U S E R
G U I D E
AM2048A
ATL part no: 1/298/100/610
Issue 02 - Jan. 2003

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Summary of Contents for ATL AM2048A

  • Page 1 U S E R G U I D E AM2048A ATL part no: 1/298/100/610 Issue 02 - Jan. 2003...
  • Page 2 50 - 60Hz TTE – Network Safety Statements: The AM2048A is a CLASS I product and USER SAFETY and the safety status of the Ports is dependent upon the earth connection. If the MAINS EARTH or the DC EARTH cannot be guaranteed to be a PROTECTIVE EARTH a PROTECTIVE EARTH conductor must be connected to the M3 STUD on the REAR PANEL.

  • Page 3: Table Of Contents

    ATL Telecom Limited declares that this product is in conformity with the essential requirements of the ‘R&TTE directive 1999/5/EC’. 4.9.2.1 X.21/V.35 DTE-to X.21/V.35 DCE 4.9.2.2 G.703-to X.21/V.35 DCE A copy of the Declaration of Conformity is available upon request from ATL Telecom Limited.
  • Page 4 ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A 4.9.3 Crossing an SDH Network 7.5.2 X.21 4.9.4 Crossing a PDH Network 7.5.3 V.35 4.10 G.703 OPTIONS 7.5.4 e-PIM 4.10.1 Impedance Front Panel 4.10.2 Timing 7.6.1 Controls 4.10.3 Framing 7.6.1.1 Disabling the Front Panel Controls 4.10.3.1...

  • Page 5: S C O P E

    A P P E N D I X B – O R D E R I N G I N F O R M A T I O N ATL Telecom Limited in the U.K.. It provides guidance for installation and commissioning of the products, as well as useful reference information.

  • Page 6: I N T R O D U C T I O N

    Both rack and desktop versions of all units are available. Desktop units are AM2048A and rack mount units are AM2048B. This manual covers the desktop units.

  • Page 7: Example Applications

    ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A EXAMPLE APPLICATIONS 2.1.3 Desktop modem to desktop modem with split site working The diagrams below illustrate some basic applications: AM2048A 2.1.1 Desktop modem to desktop modem, no external timing 1 or 2 copper pairs...

  • Page 8: Rack Mount Modem To Desktop Modem

    ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A 2.1.4 Rack mount modem to desktop modem C O N S T R U C T I O N RS-232 or 10BaseT SNMP Manager 1 or 2 copper pairs DSL Shelf...

  • Page 9: I N S T A L L A T I O

    ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A On the rear panel there are the following connectors: I N S T A L L A T I O N Power input (depending on the model) This chapter describes the basic steps that are required to set up a system using the DSL...

  • Page 10: Default Settings

    ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A During sequence the available colours of each LED are displayed in turn as a confidence check. Type the password, then press ‘Enter’ (note: the password is case sensitive). The default password is carraige return.

  • Page 11: Setting The User Interface

    ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A SETTING THE USER INTERFACE SELECTING THE CIRCUIT CONFIGURATION The unit automatically detects what kind of user interface is plugged in and displays the The term ‘digital section’ refers to the data link between the user ports of the connected appropriate screen in the “Configuration>User Port”...
  • Page 12 ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A 4.9.1.1 G.703 to G.703 Transparent Timing The internal clock is generated at the Master, both terminals lock to this clock and return the clock to the AM2048s. An elastic store in the AM2048 buffers the data.
  • Page 13 ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A Terminal AM2048 AM2048 Terminal Network or AM2048 AM2048 Terminal Master Slave Terminal Master Slave V35/X.21 V35/X.21 V35/X.21 V35/X.21 V35/X.21 V35/X.21 V35/X.21 V35/X.21 4.9.2 Tandem Section – External Timing 4.9.2.2 G.703-to X.21/V.35 DCE...

  • Page 14: Crossing An Sdh Network

    ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A 4.9.3 Crossing an SDH Network 4.10.2 Timing For a full treatment of the timing options, see section 4.9. Timing Timing AM2048A AM2048A AM2048A AM2048A 4.10.3 Framing Network Customer Customer Slave...

  • Page 15: Structured Operation

    ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A 4.10.3.2 Structured Operation 4.10.3.3 Structured Working, CRCs Enabled CRC4 CRC4 CRC4 CRC4M CRC4G CRC4M CRC4G CRC4M CRC4G HDSL HDSL CRC6 CRC6 CRC4M CRC4G CRC4M CRC4M CRC4G CRC4G HDSL HDSL CRC6 CRC6 FIGURE 4.10.3: STRUCTURED WORKING, CRCS ENABLED...

  • Page 16: Ets 300 233 Loopbacks

    ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A 4.10.4 ETS 300 233 Loopbacks Table 2 Loop-back code definitions Loop 1 and Loop 2 may be activated by sending patterns using spare bits 5 and 6 in TS0. State...

  • Page 17: O M M I S S I O N I N

    ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A C O M M I S S I O N I N G Once the equipment is correctly installed, it may be necessary to monitor the quality of service before putting live traffic on the circuit, depending on the installation rules of the network.

  • Page 18: R A N S M I S S I O N P E R F O R M A N C

    ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A T R A N S M I S S I O N P E R F O R M A N C E END TO END DELAY The transit delay from one end of the system to the other is < 700uS.

  • Page 19: 1-Pair With Noise Range On 04Mm Wire

    (M3 stud). Mating connector Molex Minifit Junior Receptacle Molex Part Number: 39-01-4031 Molex female contact Molex Part Number: 39-00-0039 The DC Power Cable can be ordered from ATL, ATL Part Number (See Appendix B). CABLE AM2048A DC POWER 6/910/000/423...

  • Page 20: Copper Transmission Line 35 1

    Receive cct. 104 n.c. Transmit cct. 103 n.c. Ground cct. 102 The line cable supplied is a standard 3 metre screened Category 5 cable with an 8 way RJ45 plug on each end. ATL part number 6/910/000/425 (See Appendix B).

  • Page 21: Interface Modules

    ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A INTERFACE MODULES 7.5.2 X.21 7.5.1 G.703 ITU Recommendation V.11 refers to ISO 4903 for the connector pin-out. The 75 ohm interface connectors are BNC. The 120 ohm interface connector is RJ45.

  • Page 22: E-Pim

    ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A 7.5.3 V.35 7.5.4 e-PIM ITU Recommendation V.35 refers to ISO 2593 for the connector pin out. The Ethernet port is 10BaseT/100BaseT and the connector is RJ45, the pin-out is shown below.

  • Page 23: Front Panel

    ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A FRONT PANEL 7.6.1.3 Resetting to Factory Default Configuration 7.6.1 Controls Press the Local Loop and Loop Back buttons together, and then with the buttons still pressed, press the Remote Loop button as well. The unit will automatically restart with all of its The front panel controls have a dual purpose.

  • Page 24: Indicators

    ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A 7.6.2 Indicators I N T E R N A L L I N K S A N D F U S E S There are four tri-colour LEDs that provide status information. These are interpreted as follows: G.703 PLUG IN MODULE...

  • Page 25: V.35 Plug In Module

    ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A MOTHERBOARD In DCE mode, the module may be configured to generate Byte Timing (B) or receive the DTE clock (X). The motherboard is fitted with a ‘bootblock download enable’ switch that is accessible from In DTE mode, the module may be configured to receive Byte Timing (B) or generate a DTE the underneath of the plastic housing.

  • Page 26: F R E Q U E N T L Y A S K E D Q U E S T I O N

    Most versions of Windows running on a PC come with a VT100 terminal emulator, such as HyperTerminal. TeraTerm is the recommended VT100 terminal emulator. This can be downloaded from the ATL web site. http://www.atltelecom.com/transmission/support When I plug in the Terminal Emulator I get strange characters on the screen The bit rate of the serial port is probably set to the wrong speed.
  • Page 27 ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A Using the F8 function key check to see if the performance statistics are roughly the same for clock skew is a problem. each line and for each end (ELU and NTU) of the line.

  • Page 28: S Y S T E M O V E R V I E

    The transmission circuit utilises a custom IC and a number of proprietary components to perform the signal processing described above. ATL Transmission technical support is available by fax on +44 29 20 500 850 in the first instance. When more than one transmission line is in operation, each transmission system operates with...

  • Page 29: Dsl Transmission Frame

    ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A 10.2 DSL TRANSMISSION FRAME 10.4 USER INTERFACE MODULES Both of the above transmission systems operate in a bit pump mode. The DSL frame is sent The user interface is provided by a plug-in module of which there are five types: over this ‘data pipe’.

  • Page 30: C O M P L I A N C E N O T E

    ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A C O M P L I A N C E N O T E S TTE network statements and the declaration to conformity to EC directive 1999/5/EC are provided inside the front cover of this User Guide together with safety information.

  • Page 31: G L O S S A R

    ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A G L O S S A R Y Alarm bit in G.704 frame, timeslot 0 Alternating Current Alarm Indication Signal British Telecom Carrierless Amplitude and Phase Modulation CCITT International Telegraph and Telephone Consultative Committee...
  • Page 32 ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A European Telecommunications Standard G.704 Timeslot 0 spare bit n Frame Alignment Word Synchronous Digital Hierarchy FIFO First In First Out Buffer SELV Safe Extra Low Voltage FLASH Non-volatile read/write memory...
  • Page 33 ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A A P P E N D I X A - X . 2 1 / V . 3 5 C L O C K O P T I O N S There is an inherent limitation with X.21 and V.35 standards when timing information is only...
  • Page 34 ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A Data clocked out on Data clocked out rising edge of the clock on rising edge of Clock, and data the clock Clock, and data delayed Data sampled delayed relative to...
  • Page 35 AM2048A G.SHDSL, Two Pair, Mains power 1/298/14X AM2048A-1 G.SHDSL, Single Pair, Mains power 1/298/17X AM2048A G.SHDSL, 2B1Q DC / line power 1/298/24X AM2048A-1 G.SHDSL, Single Pair, DC / line power 1/298/27X Example order code 1/298/173 AM2048A-1 Single Pair Mains Power TC-PAM Transmission User interface V.35...
  • Page 36 A P P E N D I X C – P R O G R A M M I N G F R O N T P A N E L INTRODUCTION For users that don’t have access to a PC or prefer to configure the AM2048A without the need for a PC, the operating parameters can be configured using the front panel controls.
  • Page 37 ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A AM2048A Parameter Value Meaning Terminal Number Local Loop Loop Back Rem Loop 00000 Slave - 1 Line 00001 Slave - 2 Lines (Default Value) 00010 Master - 1 Line 00011...
  • Page 38 ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A G.703 Parameter Value Meaning Interface Value Number Timing Structured CRC Impedance 00000 4a (ELU) Transparent 75 Ohm 00000 00001 Slave - 1 Line Transparent 120 Ohm 00001 00010 Slave - 2 Lines (Default Value)
  • Page 39 ATL TELECOM USER GUIDE ATL TELECOM USER GUIDE AM2048A AM2048A Parameter Value Number X21/V35 Interface Clamp FIFO Invert Rx Clock 4b (ELU) 00000 Disable 00001 Disable 00010 Enable 00011 Enable 00100 Disable 00101 Disable 00110 Enable 00111 Enable 00000 5b (NTU)

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