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C-DOT DSS MAX Installation And User Manual

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C-DOT NSE
INSTALLATION
AND
USER MANUAL

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  • Page 1 C-DOT NSE INSTALLATION USER MANUAL...

  • Page 2: User Manual

    Section No. 403-305-0717 System Draft 03, August 2000 Practices C-DOT DSS MAX INSTALLATION USER MANUAL © 2000, C-DOT Printed in India...
  • Page 3 C-DOT DSS MAX MAINTENANCE ALARMS AND REPORTS DRAFT 03 AUGUST 2000 BHADRA 2057 SERIES 300 : INSTALLATION CSP SECTION NO. 403-305-0717 THIS C–DOT SYSTEM PRACTICE REFERS TO THE C–DOT NETWORK SYNCHRONISATION EQUIPMENT (ABBREVIATED AS C–DOT NSE IN THE REST OF THIS PUBLICATION).

  • Page 4: Table Of Contents

    Chapter 4. NSE Integration with Exchange....................15 4.1. Introduction..........................15 4.2. NSE Integration with E-10B Exchanges ................15 4.3. NSE Integration with C-DOT SBMs ..................18 Chapter 5. Slip Monitoring ..........................29 5.1. Slip Monitoring in C-DOT DSS..................... 29 Chapter 6.

  • Page 5: Chapter 1. Introduction

    The input and output interface of NSE are developed as specified by ITU-T Rec G.703. Both E-10B and C-DOT MAX-L exchanges accept 2.048 MHz clocks as specified by G.703/6 Rec. However C-DOT SBMs accept 8.192 MHz clock which is also supplied by NSE.

  • Page 6: Chapter 2. Product Description

    Product Description 2.1. SYSTEM ARCHITECTURE The C-DOT Network Synchronization Equipment (NSE) consists of a PC type cabinet which houses duplicated controller and PLL (NCP) cards, duplicated input/output interface (NIO) cards, and one display card, keyboard card and mother board. It has the provision to mount two oven-controlled crystal oscillator 8 (OCXO) required for level 2 operation.
  • Page 7 PRODUCT DESCRIPTION INSTALLATION AND USER MANUAL...
  • Page 8 Chapter 2 C-DOT NSE...
  • Page 9 PRODUCT DESCRIPTION INSTALLATION AND USER MANUAL...
  • Page 10 Chapter 2 C-DOT NSE...

  • Page 11: Synchronised Clock Outputs

    The NSE supplies six (6) ITU TG.703/10 (120Ω) output clocks. These can be used for E-10B exchanges and C-DOT MAX-L exchange. In addition to these, it also gives six (6) 8MHz (single ended TTL, 75 ohms) clock output along with accompanying 8KHz sync signals (differential TTL) to be used with C-DOT SBM exchanges.

  • Page 12: Nse Packaging Details

    The NSD card is mounted on the front panel of the NSE and is connected to both copies of NCP through 40 pin FRC connector cables. 3.2. FIRMWARE DETAILS S.No. Device Card Position Checksum EPROM 27C010 AB23 EPROM 27C010 2B52 EPLD 7128E 1B7916 EPLD 7128E 1A6DC5 EPLD 7128E 1660D9 EPLD 7128E 1660D9 C-DOT NSE...

  • Page 13: Jumper Details For Ncp Card

    NSE PACKAGING DETAILS S.No. Device Card Position Checksum PAL 22VI0 3F84 PAL 22VIO 53AA Serial PROM F6116 3.3. JUMPER DETAILS FOR NCP CARD Jumper Status Function Short Usage of write operation to FLASH PROM possible (U17) Short Usage of write operation to FLASH PROM possible (U19) Short Connects AGND to Gnd...

  • Page 14: Jumper Details For Nio Card

    To connect reference clk 2 to phase detector Note : Position of jumpers W6, W7, W8 on NCP card and W2, W1 and W3 on NIO card decide whether a reference trunk is selected or reference clock is selected by NSE. C-DOT NSE...

  • Page 15: Nse Integration With Exchange

    Chapter 4. NSE Integration with Exchange 4.1. INTRODUCTION NSE can be integrated with E-10B exchanges, C-DOT SBMs and MAX-L exchanges. The connectivity details and procedure of integration is described for each exchange separately in the following sections. 4.2. NSE INTEGRATION WITH E-10B EXCHANGES 4.2.1.
  • Page 16 G.703 OUTPUT CLK CONNECTOR CONNECTOR CHECK INPUT TO NSE INPUT TIMING IN BT FEEDBACK TIMING BT BAY TO NSE (RUNWAY TAG BLOCK) E-10B EXCHANGE U R M ISYM CARD SLIP COUNTER FIG. 4.1a NSE CONNECTIVITY WITH E-10B EXCHANGE \DESIGN\NSE-IUM\NSEUMCE C-DOT NSE...
  • Page 17 NSE INTEGRATION WITH EXCHANGE INSTALLATION AND USER MANUAL...

  • Page 18: Nse Integration With C-Dot Sbms

    & synchronize mode. 4.3. NSE INTEGRATION WITH C-DOT SBMs 4.3.1. General C-DOT SBM accept a timing input of 8,192 MHz. NSE4 supplies three duplicated 8.192 MHz TTL clock output along with 8 KHz SYNC signal. C-DOT NSE...
  • Page 19 NSE INTEGRATION WITH EXCHANGE Thus a single NSE can synchronise three co-located C-DOT SBMs simultaneously. 4.3.2. Procedure to Integrate C-DOT SBMs with NSE Set NSE as given in section 3.2, 3.3 & 3.4 in level 4 mode. Power on NSE. NSE shall be ready when AUTO, OUTPUT and FREE RUN LED on NSE display panel get switched on.
  • Page 20 SLIP utility as explained in Chapter 7. Note : Care must be taken that NSE 2 MHz output cable length shall not be more than 10-15 meters. SCK-04 card shall be used only when NSE output is connected to C-DOT NSE...
  • Page 21 (SYNC OUT) CLOCK CABLE TSC-1 8.192MHz TSS-1 8KHz SYNC CABLE LEGEND TSS = TIME SWITCH CARD TSC = TIME SWITCH CONTROLLER CARD * = REFER FIG. 4.2d AND 4.2e FIG. 4.2a NSE CONNECTIVITY WITH C-DOT SBM \DESIGN\NSE-IUM\NSEUMCS INSTALLATION AND USER MANUAL...
  • Page 22 Chapter 4. TSS-0 TSS-1 NSE END SYNC (ACB-NSEXSYNX-000) 13A POSITION2 14A POSITION2 TSS-0 TSS-1 (TAB 1/2/3) 13A POSITION3 14A POSITION3 FIG. 4.2b CONNECTION DETAILS FOR C-DOT SBM EXCHANGE INTERFACE (SYNC CABLE) \DESIGN\NSE-IUM\NSEUMDS1 C-DOT NSE...
  • Page 23 NSE INTEGRATION WITH EXCHANGE TSC-0 SPINNER CONNECTOR (ACB-NSEX8MCX-000) 8.192MHz NSE END 8.142MHz 12B, POSITION 1 TSC-1 SPINNER CONNECTOR (ACB-NSEX8MCX-000) 8.192MHz NSE END 8.142MHz 15B, POSITION 1 FIG. 4.2c CONNECTION DETAILS FOR C-DOT SBM EXCHANGE INTERFACE (CLOCK CABLE) \DESIGN\NSE-IUM\NSEUMDS INSTALLATION AND USER MANUAL...
  • Page 24 DDF and another pair from 5a-5c of J17 tab 1 at NSE (i.e. same 7/2 connector) goes back to DDF and is routed to the exchange via separate termination. 3 nos. of 2 Mb digital trunks from trunk group connected to tax may be chosen as reference digital trunks. Contd…on page 25 C-DOT NSE...
  • Page 25 NSE INTEGRATION WITH EXCHANGE 6:,7&+ 5220 7[ )520 /2&$/ 6:,7&+ 5220 '78 ,1 5() &'27 5[ 72 /2&$/ '7.  6:,7&+ 5220 )520 850 ,1 (% 7$* %/2&. $ 7$* %/2&. % 7(50,1$7,1* 7(50,1$7,1* 0E ',*,7$/ 0E ',*,7$/ 7581.6 )520 7581.6 )520 6:,7&+ 5220 (;,67,1*...
  • Page 26 7[ 3$,5 2) 7581. )520 7$; (;&+$1*( 6285&,1* 1: &/2&. 72 '') 5[ 3$,5 2) 7581. 72 /2&$/ (;&+$1*( NOTE: 1) LENGTH OF THE CABLES DEPENDS ON SITE. (NOT MORE THAN 20 MTRS) Figure 4.2f DIGITAL TRUNK CABLE EXTERNAL C-DOT NSE...
  • Page 27 LEVEL 2 PCMs FROM DDF FROM DTS REF_TRK CONNECTOR C-DOT 7/2 CONNECTOR G.703 CLK OUTPUT INPUT TIMIMG IN MAX-L SCK-0 SCK-1 7/2 CONNECTOR 7/2 CONNECTOR C-DOT MAX-L (SLIP DUMPS) FIG. 4.3a NSE CONNECTIVITY WITH MAX-L EXCHANGE \DESIGN\NSE-IUM\NSEUMCNW INSTALLATION AND USER MANUAL...
  • Page 28 16A POSITION1 (TAB1) SCU FRAME FIG. 4.3b NSE CONNECTIVITY WITH C-DOT MAX-L EXCHANGE NOTE:- IF THE CABLE HAS A CONNECTOR WITH ONLY ONE PAIR FOR CONNECTING TO COPY Ø OF MAX-L (POSITION 11A), CONNECTION SHOWN IN DIAGRAM MAY BE MADE FOR COPY1 ALSO (POSITION 16A) AT SITE.

  • Page 29: Chapter 5. Slip Monitoring

    SLIP MONITORING IN C-DOT DSS 5.1.1. Introduction Slip monitoring is done in C-DOT DSS at the DTS (Digital Trunk Synchronisation) card and slips are dumped and analysed at the IOP using two slip monitoring utilities namely "PORTMON" and "SLIP". PORTMON is an inherent part of UNIX Release 9.0 and in onward releases and the other utility named SLIP is a post-processing utility and is available in UNIX releases 11.2 and higher.
  • Page 30 (The value of X shall be either 10 or a multiple of 10) Where 'Y' is time interval in hours for which slip has to be calculated. Where 'slip.log' is the file available after running PORTMON Utility. C-DOT NSE...
  • Page 31 SLIP MONITORING Note : Tec specifications The output clocks should have a minimum stability of 2x10E-10 per day. The NSE should be able to give audible alarm for various critical and non critical faults. NSE should have fitter absorbtion characteristics and fitter transfer characteristics as specified in ITU g.823 standards.
  • Page 32 CONNECTOR B TAB 2 (FOR DTS1) TAB 3 (FOR DTS3) MODEM CABLE 7/2 CONNECTOR AT DTU END (MONITOR PORT) FIG. 5b D-25 FEMALE CONNECTOR CONNECTION DETAILS OF SLIP MONITORING CABLE AT IOP END FOR DTS1 & DTS3 \DESIGN\NSE-IUM\NSEUMMC1 C-DOT NSE...
  • Page 33 SLIP MONITORING CONNECTOR B TAB 2 (FOR DTSØ) TAB 3 (FOR DTS2) CONNECTOR AT IOP-VH END 7/2 CONNECTOR AT DTU END (MONITOR PORT) FIG. 5c CONNECTION DETAILS OF SLIP MONITORING CABLE D-25 FEMALE CONNECTOR 25 PIN MALE FOR DTSØ & DTS2 TO 9 PIN FEMALE CONVERTER CONNECTOR B...

  • Page 34: Debugging Aids For Nse

    (i) Check power LED glows properly (DS1) on front panel of NCP (ii) PSU on NIO card facility (ii) Check jumper (iii) Jumper setting on NIO settings on NIO card not proper (iv) EPLDs and FPGA in NIO not mounted properly C-DOT NSE...
  • Page 35 DEBUGGING AIDS FOR NSE Symptom Possible Reasons Action OUTPUT LED (i) Output drivers of 8MHz (i) Change NCP card fails to glow and 8 KHz sync on NCP card if 8 MHz or 8KHz or 2MHz output on NIO card sync signal is found may have gone faulty to be missing.
  • Page 36 System COMMENTS Practices The following comments pertain to: Document Name CSP Section Issue/Draft (Month) (Year) COMMENTS : (Use a separate sheet if required) Please mail your comments to: Your Reference: Name Centre for Development of Telematics Designation : Attn: Mr. Y.K. Pandey Company Director, Systems Address...

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