C-DOT NSE Installation & User Manual
Contents
1. TSC 0 2 3 SPINNER CONNECTOR 4 m ACB NSEX8MCX 000 GND 95 Du 8 192MHz 6 NSE END amp 7 8 142MHz 12B POSITION 1 TSC 1 1 2 3 SPINNER CONNECTOR 4 ACB NSEX8MCX 000 GND J12 E 5 Jo 8 192MHz 6 NSE END 7 8 142MHz 15B POSITION 1 FIG 4 2 CONNECTION DETAILS FOR C DOT SBM EXCHANGE INTERFACE CLOCK CABLE DESIGN NSE IUM NSEUMDS INSTALLATION AND USER MANUAL 23 Chapter 4 24 DTK 1 2 3 Rx TO LOCAL FROM SWITCH ROOM TAX DDF SWITCH ROOM Tx FROM LOCAL SWITCH ROOM TAG BLOCK TAG BLOCK B TERMINATING TERMINATING 2Mb DIGITAL 2Mb DIGITAL TRUNKS FROM TRUNKS FROM TAX SWITCH ROOM EXISTING JUMPERS Figure 4 2d EXISTING ARRANGEMENT IN DDF BEFORE INSTALLATION OF NSE Notes Refer fig 4 2d and 4 2e Initially the Tx Rx exist at DDF as shown in fig 4 2d Rx pair to be isolated and connected to separate tab blocks i e routed in serial mode via NSE as shown in fig 4 2e Rx pair from distant exchange terminates at NSE on la Ic pair of J 17 tab 1 DDF and another pair from 5 5 of J 17 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 digi2. 11 2 6 5 Terminal Interface 11 NSE Packaging Detalls teen edt nbn iini a 12 ru eI 12 3 2 Firmware Detalls pret E repe b tap Pe ap Ra ERR 12 3 3 Jumper Details NCP debe ein a a 13 3 4 umper Details for NIO as het a 14 Integration XChange us u 15 41 HOEPOQOUCEIOR 25202260 one DRE MENDES E Ud caseo ME tere cere rrr ee 15 4 2 NSE Integration with 10 Exchanges icone eternam edic 15 4 3 NSE Integration with C DOT SBMS u u n uns i 18 UMS 29 5 1 Slip Monitoring iMG DOT EE xp RUE 29 pebugaingidsTor et ER ER 34 LOTUS HOME NSE WORD NSEINUSR DOC J uly 28 2000 Chapter 1 Introduction Network Synchronisation Equipment NSE has been developed by C DOT to fulfill the requirements of synchronising all the level 2 exchanges in the Indian network This equipment can be interfaced with E 10B C DOT SBM and C DOT MAX L exchanges 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 This equipment has two modes of op
3. AANNASNIWNI ASN NDISAC ASN dO LNOYS L DJ MOOT N N N ES 5 N N 5 N N N J 2515 EH a qu EQUO OO misi 05 6 IE lt r 4 r 52 Spo 9 mov seis 25 46 p1e2 214 MO 913 15 224 4 1 lt lo lt JSN s gt 4 e i 9 3 096 wees 5 900 9pow xov 1531 0100 4 4 515 S S 1 1 Y 4 1 5 037 NOILONNA TANVd NOILONNA SA3M 1531 AdOO AdOO INSTALLATION AND USER MANUAL WES 10 0 8114110 39019 114 10 49019 TLL ZHN 870 2 S1fldNI SZ 2 8 02 01 07 O 017 MO3HO 2817 I NOLLISOd S1ndNI OMA 490718 HOLO3NNOO 1501 WO LLOS 30 9 9 Z ON Nid 81 3 9078 1SOW
4. NCP card VCC print i Noise spikes can be seen in 5 on CRO ii Check all jumper settings on NCP card i Check power LED DS1 on front panel of NCP ii Check jumper settings on NIO card C DOT NSE DEBUGGING AIDS FOR NSE Symptom Possible Reasons We Symptom PossibleReasons Action OUTPUT LED i Output drivers of 8MHz i Change NCP card fails to glow and 8 KHz NCP card if 8MHz or 8KHz or 2M Hz output on NIO card sync signal is found may have gone faulty to be missing ii on NCP faulty ii Change NIO card if 2 MHz signal is missing DIAGNOSTICS on i PSU onboard NCP may be i Check for 5V on cards fail on faulty VCC point If no ii Power 1 connections to ANDENG NSE 48V faulty or reversed ii 48V connection shall be as per installation manual FAN FAIL LED i Fan may be faulty i Replace fan if glows red faulty ii Fan fail circuit in NCP faulty ii Replace NCP card if fan is running Both cards copies i Mate to mate i Replace NCP card come up as active communication failed due to faulty RS232 drivers in NCP ii Reset signal drivers to each card is faulty NSE fails to lock i J umper settings not i Check all jumper with any of proper in NCP settings on NIO and reference NCP card INSTALLATION AND USER MANUAL 35 System Practices COMMENTS The following comments pertain to
5. NSE END Tx PAIR OF TRUNK FROM TAX EXCHANGE SOURCING N W CLOCK b TO DDF X 5 x Rx PAIR OF TRUNK LOCAL EXCHANGE x m awn x x NOTE 1 LENGTH OF THE CABLES DEPENDS ON SITE NOT MORE THAN 20 MTRS Figure 4 2f DIGITAL TRUNK CABLE EXTERNAL 26 C DOT NSE NSE INTEGRATION WITH EXCHANGE LEVEL 2 PCMs _ 7 2 CONNECTOR FROMDDF OR FROM DTS REF_TRK CONNECTOR 417 C DOT NSE 7 2 CONNECTOR J19 a G 703 CLK OUTPUT h 4 INPUT TIMIMG IN MAX L SCK 0 SCK 1 7 2 CONNECTOR 11 16A C DOT MAX L DTS IOP SLIP DUMPS FIG 4 3a NSE CONNECTIVITY WITH MAX L EXCHANGE DESIGN NSE IUM NSEUMCNW INSTALLATION AND USER MANUAL 27 Chapter 4 NOTE NSC END SOURCE a MAX L END DESTINATION SCU FRAME COPY 11 POSITION1 TAB1 J19 TAB 1 2 3 NSE CONNECTIVITY WITH C DOT MAX L EXCHANGE IF THE CABLE HAS A CONNECTOR WITH ONLY ONE PAIR FOR CONNECTING TO COPY OF MAX L POSITION 11 CONNECTION SHOWN IN DIAGRAM MAY BE MADE FOR COPY1 ALSO POSITION 16A AT SITE ACB NSEX2MCX 000 FIG 4 3b COPY1 16A POSITION1 TAB1 SCU FRAME DESIGN NSE IUM NSEUMDM 28 C DOT NSE Chapter 5 Slip Monitoring 5 1 SLIP MONITORING IN C DOT DSS 5 1 1 Introduction Slip m
6. e caa Position Checksum EPROM 27 010 NCP AB23 EPROM 27 010 NCP 2B52 C DOT NSE 3 3 NSE PACKAGING DETAILS Device cara Position checksum raze um xw s Pato s rons UMPER DETAILS FOR NCP CARD W1 Short U sage of write operation to FLASH PROM possible U 17 Usage of write operation to FLASH PROM possible U 19 W3 Short ConnectsAGNDtoGnd sd W4 1 2 Short Connects CLK as strobe to DS1232 to be done when emulator is used instead of IMP Connect AS as strobe to DS1232 For Level 2 operation W5 2 3 Short For Level 4 operation To use direct clock as Reference 0 to PLL To use digital trunk as Reference 0 to PLL To use direct clock as Reference 1 to PLL To use digital clock as Reference 1 to PLL use direct clock as Reference 2 to PLL 8 Short To use digital trunk as Reference 2 to PLL W9 1 2 Connect Ext Osc Clock 8600 to PLL Short For Level 2 operation WO For Level 4 operation For Level 2 operation WI Short For Level 4 operation W12 1 2 disable spare 2 MHz TTL O P at connector W12 2 3 To enable spare 2 MHz TTL O P at connector INSTALLATION AND USER MANUAL 13 Chapter 3 W13 1 2 get 2 MHz Clock O P at connector 6 W13 2 3 To get 16 MHz Clock O P at connector J 6 Note Position of jumper W5 W10 an
7. WOLLOG JO Z ON vr er ZLC 6 zr sr ANNI C DOT NSE Chapter 2 ee I9 e 1531 bro 438 3 1 p Q eur sr ur vr or er 5 9 Ve 45014 Ve 3513 ss Ass e Wy 7 Ww x NO i AdOO 0 AdOO 05 Bes 200 ZM LM 50 9 K 04 7 801 3 HOS 61014100 30070 9 3 188 100 0 303 104100 ONAS PRODUCT DESCRIPTION YMdNNASN WNI ASN NDISAC SNOILO3NNOO H3MOd ASN 914 OTI3A L ISNI INSTALLATION AND USER MANUAL Chapter 2 CSHNNASNIWNI ASN NDISAC 1IV L3d HOLO3NNOO IWNINYSL SSN 1 LV HOLO3NNOO 1 22254 SSN LV HOLO3NNOO Wad NNOO AdALC Wad NNOO AdALG 46 C DOT NSE 10 2 3 2 4 2 5 2 6 PRODUCT DESCRIPTION SYNCHRONISED CLOCK OUTPUTS The NS
8. 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 it C DOT NSE NSE INTEGRATION WITH EXCHANGE C DOT SBM 8KHz SYNC 13A TSS 0 2 CONNECTOR REFERENCE 1 8 192MHz CLOCK CABLE PCMs FROM 112 an TSC 0 HIGHER LEVEL 2 2 amp ES EXCHANGE 3 CONNECTOR C DOT SYNC OUT NSE CLOCK CABLE 27 gt 15B 8 192MHz TSC 1 gt gt 14 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 DESIGN NSE IUM NSEUMCS INSTALLATION AND USER MANUAL 21 Chapter 4 55 0 TSS 1 1 1 2 2 o 3 o 3 4 4 4 NSE END 5 SYNC o 6 o 6 ACB NSEXSYNX 000 1 1 y 7 7 2 L 13A POSITION2 14A POSITION2 3 c TE 5 6 t TSS 0 TSS 1 a 7 V c a c a o 1 1 e J20 o 2 2 o 1 2 3 o 3 e Xe 4 4 5 o XE 6 o 6 7 7 13A POSITIONS 14A POSITIONS FIG 4 2b CONNECTION DETAILS FOR C DOT SBM EXCHANGE INTERFACE SYNC CABLE DESIGN NSE IUM NSEUMDS1 22 C DOT NSE NSE INTEGRATION WITH EXCHANGE
9. 3SN GOV o AV8 18 NI LLID GALSIML 502 z AN 7 9 21 Lo 7 J go 25 S 89 e E a HOLO3NNOO 6 AVL ISN X 7 J I 318VO ulvd GALSIML 502 o 9 30018 OVL 401 AVE 18 000 HOLO3NNOO s lt 318VO ONILSIXA o plo o b 9 18 JHL OL 0577 LN3Wauinoau ILIS SV 91 01 HL N31 318ISSOd WAWININ OL 1437 38 OL SI HLO N31 3 HiVd Q31SIML 902 17 INSTALLATION AND USER MANUAL Chapter 4 f Change the switch on BT bay from INDEPENDENT mode to SYNC 4 2 3 mode Also reset the button on BT All the existing non urgent alarms should disappear on the HASU card of E 10B exchange 9 To verify that NSE output is supplying clock to the E 10B connect the Monitoring input check input of NSE on connector 18 to the point shown the BT bay as shown in the Figure 4 1 The SYSO LED NSE display panel shall light up h Slip at E 10B can be monitored by connecting the slip counter at BT bay at the point shown in the figure i The slip values on counter shall be noted on daily basis at a particular time one day before and after synchronisation a If MSEXT alarm on CIT 1 is red then givea reset to HASU card and press
10. C DOT NSE INSTALLATION AND USER MANUAL Section No 403 305 0717 System RUN Draft 03 August 2000 Practices C DOT DSS MAX INSTALLATION AND USER MANUAL 2000 C DOT Printed in India 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 THE INFORMATION IN THIS SYSTEM PRACTICE 15 FOR INFORMATION PURPOSES AND 15 SUBJECT TO CHANGE WITHOUT NOTICE A COMMENT FORM HAS BEEN INCLUDED AT THE END OF THIS PUBLICATION FOR READER S COMMENTS IF THE FORM HAS BEEN USED COMMENTS MAY BE ADDRESSED TO THE DIRECTOR SYSTEMS CENTRE FOR DEVELOPMENT OF TELEMATICS 39 MAIN PUSA ROAD NEW DELHI 110 005 2000 BY C DOT NEW DELHI Chapter 1 Chapter 2 Chapter 3 Chapter 4 Chapter 5 Chapter 6 Table of Contents 5 Produict DDSBSCTIDU OD 6 2 5 ve ese uade eu or 6 2 2 Clock Selecblgtes eee u una un etes ER erano ves bebe e ducem beue ecce utut 6 2 3 Synchronised Clock OUEDUES 11 2 Check APUC EE E 11 2 5 Wiser Iatentace P
11. CTOR B TAB2 FOR DTS1 3 FOR DTS3 1 1 2 2 3 3 de d 4 8 8204 3 4 o 6 6 4 L4 7 5 8 8 6 I 9 9 2 7 10 10 s 11 11 1 7 2 CONNECTOR 12 12 156 5 AT DTU END MONITOR PORT 8 48 RSEN 8 14 14 g 15 15 8 16 16 9 17 17 18 18 19 19 20 20 21 21 FIG 5d 23 23 CONNECTION DETAILS 25 25 SLIP MONITORING CABLE FOR DTS1 amp DTS3 D 25 FEMALE CONNECTOR 25 PIN MALE TO 9 PIN FEMALE CONVERTER DESIGN NSE IUM NSEUMMC1a INSTALLATION AND USER MANUAL 33 Chapter 6 Debugging Aids for NSE e The following table describes the various faults that might develop in NSE cards and also the proposed solution for each case Symptom Possible Reasons Action 1 RESET LED ON 1 not mounted NCP glowing Red properly ii Pins of EPROMs bent or broken iii Processor not mounted properly iv PSU on NCP failed v Processor in Halt state due to address error bus error caused due to short open in address data bus RESET LED glows i PSU of NCP card failed red intermittently ii No watchdog signal to 0512320 CARD FAIL LED i card not jacked in glows properly ii PSU on NIO card facility iii umper setting on NIO not proper iv EPLDs and FPGA in NIO not mounted properly 34 1 Mount the PROMs as per release information ii Check the output voltage at point on
12. E supplies six 6 ITU TG 703 10 1200 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 8K Hz sync signals differential TTL to be used with C DOT SBM exchanges A unique feature of NSE is that in duplex mode of operation each copy of NSE supplies half the numbers of output clocks described above and in simplex operation the only copy supplies all the output docks required This is achieved by shorting individual card outputs on the motherboard and selecting outputs via relays This feature also enables synchronization of exchanges that require duplicated input clocks as reference clocks CHECK INPUTS The NSE can monitor or check clock outputs of the synchronized target exchanges to verify whether they synchronisation with the network clock It can take in three 3 digital trunks G 703 6 1200 and 3 G703 10 1200 clocks supplied from the target exchanges for monitoring The digital trunks are connected to the NSE in non regenerative mode i e the dock and data information is tapped from the trunks using high impedance terminations This results in no disturbance in the trunks at the destination exchanges where the trunks are terminated with their characteristic impedance USER INTERFACE PANEL NSE has a user friendly display panel and keyboard arrangement The display panel shows the
13. LATION AND USER MANUAL 31 Chapter 4 CONNECTOR B TAB 2 FOR 0750 TAB3 FOR DTS2 EP AT DTU END MONITOR PORT 2 FIG 5a 24 CONNECTION DETAILS OF SLIP MONITORING CABLE FOR DTS amp DTS2 8 25 FEMALE CONNECTOR AT ML END CONNECTOR B 2 FOR DTS1 TAB3 FOR 0793 1 2 o 8 1 ct 4 2 5 3 6 4 7 5 MODEM CABLE 8 6 9 T 10 11 7 2 CONNECTOR AT DTU END MONITOR PORT FIG 5b CONNECTION DETAILS OF SLIP MONITORING CABLE FOR DTS1 amp DTS3 DESIGN NSE IUM NSEUMMC1 25 D 25 FEMALE CONNECTOR AT IOP END 32 C DOT NSE SLIP MONITORING CONNECTOR TAB 2 FOR 0750 DTS2 1 1 _ _ 211 ae oak 211 END E 3 6 6 4 T T o 5 o 8 8 6 9 9 2 F 10 10 6 3 11 11 4 7 2 CONNECTOR 12 12 5 AT DTU END MONITOR PORT 48 38 14 14 o 7 15 15 8 16 16 1l e 9 17 17 18 18 19 19 20 20 21 21 22 22 Pe FIG 5c Je 24 24 CONNECTION DETAILS OF p SLIP MONITORING CABLE 25 PIN MALE FOR DTS amp DTS2 To spn reune CONVERTER CONNE
14. RZLP switch on HASU The MSEXT alarm shall beoff to show proper operation b The NSE 2MHz G 703 output cable length shall be not morethan 15 meters C No oscillator drift messages should apear Preventive Maintenance at E 10B E 10B s local dock given by HOSA cards may drift with passage of time oscillator stability 10 Therefore before synchronisation the HOSA card voltages should be checked on Vas points of all three HOSA cards The voltage indicated shall be in between 1 45V to 1 55 V D C If voltages are found to be out of the above mentioned range these should be adjusted with the help of a potentiometer mounted on the cards Note Tolerance values may vary from card to card So if FNU alarm on HASU is present after connecting to NSE ie after switch over from independent to synchronize mode HASU card can be tuned to match and RZLP pressed to remove the alarm Tuning to be done to the effect that no alarmis present both in independent amp synchronize mode 43 NSE INTEGRATION WITH C DOT SBMs 4 3 1 18 General C DOT SBM accept a timing input of 8 192 MHz NSE4 supplies three duplicated 8 192 MHz TTL dock output along with 8 KHz SYNC signal C DOT NSE 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 a Set NSE as given in section 3 2 3 3 amp 3 4 in level 4 mode b Power on NSE NSE shall
15. ates that NSE is ready for use Connect PCMs Maximum 3 coming from a TAX at higher level to NSE at Ref Trk connector J 17 Let NSE select a PCM as reference and synchronise to it The maximum synchronisation time can be around 10 12 hrs NSE in SYNCH mode shall be indicated by the LOCK LED glowing on the display board d Physically connect NSE 2 048 MHz G 703 output from connector J 19 to the top runway tag block at the back of the BT bay of E 10B exchange e J ack in the CIT1 card in the E10B exchange INSTALLATION AND USER MANUAL 15 Chapter 4 1 INPUT PCMs J Rx 2 4 ire FROM HIGHER LEVELI TAX lt 3 4 2 Re ToURM 3 Rx REF_TRK CONNECTOR J17 d C DOT CHECK INPUT NSE CONNECTOR J18 CHECK INPUT TO NSE A SW INPUT Tiina IN BT FEEDBACK TIMING _ BT BAY NSE 415 alla we I RUNWAY TAG BLOCK a L2 108 EXCHANGE URM hem im ISYM CARD SLIP COUNTER FIG 4 1a NSE CONNECTIVITY WITH E 10B EXCHANGE DESIGN NSE IUM NSEUMCE 16 C DOT NSE NSE INTEGRATION WITH EXCHANGE AGOWNNASN WNI ASN NDISAC AOVAYALNI 39NVHOX3 4013 STIVLAG NOILOANNOO 914 390719 DNIHOLINOW AVL gif ASN 1018 v wo 5 18 40 401 o NO 2018 SV L 00 XONWX
16. be ready when AUTO OUTPUT and FREE RUN LED on NSE display panel get switched on C Make connections as shown in Fig 4 2 a 4 2 b 4 2 c 4 2 d 4 2 e 4 2 f and 2 3 d At CRP terminal of exchange give command MOD CLKSRC EQPAG to equip NSE in the system Response on the terminal shall indicate equipage of NSE Also an URGENT alarm shall be raised on OOD terminal and on ADP e Give SEL CLK SRC command to select 5 0 NSE clock available to 5 0 of SBM or NSE 1 NSE clock available to TSC 1 of SBM Response shall indicate the selection of 5 0 or NSE 1 dock Also the URGENT alarm shall change to NORMAL OOD and ADP f Give DISPL CRNT CLK SRC command to ensure that 5 0 5 1 is the selected dock in the system 9 Repeat f of 4 3 3 Note Care must be taken that if NSE is to supply output to SBM local exchange it shall beset in level 4 mode before power on and if NSE is to supply output toa SBM TAX then it shall be set in Iwa 2 mode before power on The Mode settings are explained in section 3 3 4 3 3 Procedure for Integration of NSE with C DOT Exchanges MAX L a Make connections as shown in Fig 4 3 4 3 b 4 2 d 4 2 4 2 f and Fig 2 3 for MAX L exchange b At NSE check up the jumper settings at both NIO and NCP cards as described in Chapter 3 Also set NSE in level 2 mode C Power on NSE and wait for 2 hours for warm up After 2 hours AUTO ACTIVE and FREERUN LED shall li
17. csp section 1 111411 ssue Draft LIL 11 Month Y ear COMMENTS Use a separate sheet if required Please mail your comments to Your Reference Centre for Development of Telematics Name Attn Mr Y K Pandey Em Director Systems pany Address 39 Main Pusa Road New Delhi 110 005 Tel 491 11 5740374 Fax 491 11 5756378 Fax
18. d W11 decide the level 2 or level 4 operation of NSE Other jumper settings may be left as per factory default settings as shown 3 4 JUMPER DETAILS FOR NIO CARD To connect Ref Trk1 G 703 6 to phase detector To connect reference clk 1 to phase detector To connect Ref TrkO G 703 6 to phase To connec reference clk 0 to phase detector To connect Ref Trk2 G 703 6 to Phase Detector To connec 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 dock is selected by NSE 14 C DOT NSE Chapter 4 NSE Integration with Exchange 4 1 INTRODUCTION NSE can be integrated with E 10B exchanges C DOT SBMs 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 General NSE can supply clock to three E 10B exchange simultaneously at the same location The connectivity detail is shown in Fig 4 1 E 10B exchanges accept clock input specified by G 703 recommendation 4 2 2 Procedure to Integrate NSE with E 10B a Make connections as shown in Fig 4 1 4 1 b 4 2 d 4 2 4 2 f and Fig 2 3 b Power on NSE in level 2 mode and wait for 2 hrs O P LED AUTO LED and FREE RUN LED on NSE display panel shall glow green This indic
19. eration Selection of a particular mode of operation of NSE is jumper selectable and is explained in Chapter 3 of this document a Level 2 Mode This mode of NSE is suggested for supplying synchronised output clock of stability 1E 10 day to exchanges 10 and C DOT MAX L The equipment is named NSE2 in this mode of operation b Level 4 Mode This mode of NSE is suggested for supplying synchronised output clock of stability 1E 8 day to exchanges C DOT SBMs The equipment is named NSE 4 in this mode of operation It may be noted that the NSE2 and NSE4 are the same equipment except that NSE 2 has two additional level 2 crystal oscillators mounted for level 2 operation INSTALLATION AND USER MANUAL 5 2 1 2 2 Chapter 2 Product Description 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 The controller card has a software controlled digital Phase Locked Loop PLL microprocessor and related memory output clock interface and the display and keyboard interface The NSE input output card has the various types of input interfaces to take in the network clock It extracts clock from the input digital trunks and pr
20. ght up Connect three reference trunks to NSE at 17 Tab 1 2 3 as shown in Fig 4 2 d CLKO and LOCK LED starts blinking indicating that NSE has started locking to CLKO After 10 12 hours LOCK LED shall become steady INSTALLATION AND USER MANUAL 19 Chapter 4 and indicates that NSE is completely locked to the input reference i e 20 Note a b CLKO At MAX L exchange end the dock cards i e SCK 02 cards in both Copies need to be replaced with SCK 04 cards for NSE integration Hence force out standby SCK 02 card and replace it with 5 04 Force in this SCK copy Now force out the other SCK 02 card and replace it with SCK 04 card Force in service this SCK copy also At CRP terminal give the following commands 1 MOD CLKSRC EQPAG to equip NSE clock The response on CRP terminal shall indicate equipage of NSE clock Also an urgent alarm on OOD and ADP shall be raised indicating the equipage of NSE clock 2 SEL CLK SRC to select 5 0 NSE clock connected to 5 0 copy or NSE 1 NSE clock connected to SCK 1 copy Urgent alarm from OOD amp ADP shall be removed 3 DISPL CRNT CLK SRC command to display which clock is selected by the exchange i e NSE 0 NSE 1 CLK 0 5 0 or CLK 1 SCK 1 Connect a cable at DTS monitor port corresponding to the selected reference at NSE and the IOP to get slip dumps using PORTMON and SLIP utility as explained in Chapter 7 Care must be taken that NSE
21. onitoring 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 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 5 1 2 Prerequisite Check for the following 1 DTS card shall be jacked in 2 A RS232 cable between the selected DTS and IOP Please refer to Figures 5a amp 5b for connection details when IOP ML IOPXL is used and figures 5c and 5d for connections when I OPVH is used 5 1 3 Procedure PORTMON Utility 1 At IOP prompt make a command file tmp cmd and write the following commands in this file i Contrl C in first line ii C in second file Press lt enter gt and lt save gt the file 2 Again prompt give lop5C gt echo NY c gt gt cmd and press enter INSTALLATION AND USER MANUAL 29 Chapter 4 3 Connect the cable between the DTS card Monitor port to any of 30 the icc port at the IOP i e icc5 Care must be taken that the action field entry of the selected icc port in etc inittab file should be marked OFF 4 Invoke PORTMON Utility by giving the following command at prompt 5 c System shall ask for the port number thus enter 5 System asks for the input file name thus give the f
22. ovides standard G 703 10 interfaces for the output clocks One NCP card one NIO card form a self contained security block It can work with the other copy of these two cards in active standby mode Output to from these cards are connectorised on the motherboard The user interface panel indicates the presence and absence of input clocks trunks and the status of the PLL in the cards and the general card status Each controller card provides two ACIA links one of which is used for communication with the mate while the other is used to connect a VT 220 terminal for remote operations Fig 2 1 and Fig 2 2 show the equipment front panel and back panel details INPUT CLOCK SELECTION The input reference clock selection can be automatic or manual On power on or reset the NSE comes up in the automatic mode wherein it selects one of the input clocks according to a fixed hardwired priority The order of priority is CLKO CLK1 CLK2 If none of clocks are present or available for selection then the NSE goes into the free run mode The operator can override this selection by going to manual mode and selecting a clock using the keyboard If the input clock is present the LED corresponding to it will glow green The LED corresponding to the selected reference blinks once in 2 seconds 1 z It may be noted that a clock used as Reference to NSE shall always be taken from a higher level exchange C DOT NSE PRODUCT DESCRIPTION
23. status of various functional blocks of NSE via a set of different colored LEDs Alarms are audio visually indicated i e a beeper accompanies the LED indications The keyboard is used for manual operations Remoting of NSE alarms is also possible through an opto coupled interface A VT 220 emulation is supported for this purpose Please refer to Chapter 4 of C DOT NSE General Description document for more details on the NSE user interface NSE TERMINAL INTERFACE Two RS232 Interface are available for each NSE copy as shown in Fig 2 2 For debugging purpose a terminal may be connected to NSE as shown in Fig 2 4 INSTALLATION AND USER MANUAL 11 Chapter 3 NSE Packaging Details 3 1 GENERAL 3 2 12 The NSE card cage houses the following four types of cards a NSE Controller and PLL Card 212 501 NSE Input Output Card NIO 499 500 NSE Display and Keyboard Card NSD 463 F O02 d NSE Motherboard Card NSM 462 02 NCP and NIO form single block and can be duplicated to operate NSE in duplex mode of operation The NCP and NIO cards sit on the NSM in a card cage with the following order NCP copy 0 slot 1 top NIO copy 0 gt slot2 NIO copy 1 gt slot3 NCP copy 1 gt slot 4 bottom 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 FIRMWARE DETAILS
24. tal trunks Contd on page 25 C DOT NSE NSE INTEGRATION WITH EXCHANGE DDF SWITCH ROOM 1 Tx FROM LOCAL SWITCH ROOM REF DTK 1 2 3 FROM TAX Rx Rx TO LOCAL SWITCH ROOM TAG BLOCK A TERMINATING 2Mb DIGITAL TRUNKS FROM TAX TAG BLOCK B TERMINATING 2Mb DIGITAL TRUNKS FROM SWITCH ROOM NEW JUMPERS NEW 6 PAIR TAG BLOCK REFERENCE DIGITAL TRUNK CABLE ASSEMBLED PART No ACB NSEXDTRX 000 MAX CABLE LENGTH 20 Mts 7 2 CONNECTOR IN NSE J17 TAB1 2 3 Figure 4 2e CHANGES TO BE DONE IN DDF FOR ROUTING REFERENCE DIGITAL TRUNK CABLE TO NSE Continued from page 24 NOTE Refer figures 4 2d 4 2 e Reference digital trunks may be terminated on NSE as follows Ref DTK1 NSE J 17 tab 1 Ref 2 NSE 17 tab 3 Ref NSE J 17 tab 3 f For terminating reference digital trunks do the following Remove existing jumpers from Rx to Rx for ref digital trunks between tag blocks A amp B Terminate Rx pairs of ref digital trunk 1 from tab blocks on 7x2 connector for NSE J 17 tab1 as shown in fig 4 2e Similarly terminate Rx pairs of ref digital trunks 2 amp 3 on two different 7x2 connectors for tab 2 amp tab 3 of NSE connector J 17 Keep 7 x 2 connectors always plugged in NSE J 17 connector to avoid break in Rx pairs of digital trunks going to switch room INSTALLATION AND USER MANUAL 25 Chapter 4 CONNECTIVITY DIAGRAM
25. ull path tmp cmd System asks for file name where slip values are desired to be dumped give tmp slip log Now System asks for the baud rate enter 4800 System asks again for Port No enter 1 The utility shall start dumping slip values in slip log file Each line starting from N represent a frame slip hence we can calculate from these values the number of frame slips occurred every 10 minutes as the time stamp is printed every 10 minutes SLIP Utility This utility will convert the Slip values in hex stored via PORTMON utility to a more user friendly format in decimal It may be noted that this utility is an inherent part of UNIX releases after 11 2 and higher At OP prompt please give one of the following options i Slip c m X lt slip log 1 X Slip c h Y lt slip log Where X is the time interval in minutes for which slips are to be calculated by the utility 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 thefile available after running PORTMON Utility C DOT NSE SLIP MONITORING Note Tec specifications a The output clocks should have a minimum stability of 2x10E 10 per day b TheNSE should be ableto give audible alarm for various critical and non critical faults NSE should have fitte absorbtion characteristics and fitter transfer characteristics as specified in ITU 9 823 standards INSTAL
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