Meridian America 21, 51, 61, 71

PRACTICE

553-2201-184

5. DESIGN CONSIDERATIONS

FOREIGN AND SURGE

VOLTAGE PROTECTION 5.01 When telephone lines connected to the line circuit are exposed to

foreign voltages by direct contact or induction (e.g., power line crosses

or lightning), protection devices must be installed on the customer’s

premises. These devices must be capable of providing a path to ground

from tip to ring for foreign

voltages

that exceed 600 V peak.

OVERLOAD LEVEL 5.02 Signal levels exceeding

dBm

applied to the tip and ring will

cause distortion in the system.

Page 5-1

1 Page

Contents

Main System options 21,51,61,71 System overview Revision history About this document References Page Contents Meridian 1 System architecture 9 Product description 37 List of terms Meridian 1 Introduction The Meridian 1 commitment Product compatibility System reliability Modular equipment packaging & Advanced administration maintenance Page Ease of installation Ease of expansion Advanced features ACD ESN CDR ISDN Meridian Mail Voice Messaging Page Page System architecture Meridian 1 modular architecture Control Switching Software architecture Firmware Software Office Data Resident Programs Non-Resident Programs Page Hardware architecture Common equipment Page Page Page Network equipment Page Page 20 System architecture Figure 2 Single and dual loop configurations Page 22 System architecture Figure 3 NT8D37 lntellegent Peripheral Module segmentation segment Page Page Page Page System architecture 27 Figure 7 8 segments per Superloop configuration Page Page Page Peripheral Equipment Power equipment Page Page Page Page Product description Universal Equipment Modules Page CPU module (NT8D34) Page CPU/Network module -(NT6D39) Page Network module (NT8D35) Page Common/Peripheral Equipment modute (NT8Dli) Page Page Intelligent Peripheral Equipment module (NT8D37) @ LJ II . Peripheral Equipment module (NT8D13) It-l II 5 Iill 211 Remote Peripheral Equipment Carrier module (NT8D47) Page Page Meridian Mail module (NT6D44) 56 Product description Figure 21 Meridian Mail module MERIDIAN MAIL MODULE -typical configuration NT6D44 smdr / corrputer /I &h Pedestal (NT8D27AB) (NT7DQO) Top cap .- Expansion kit (NT8D49) Page Page Meridian 1 system options Meridian 1 system option 21A 208 Note: Additional network loops require expansion modules (Intelligent PE or Peripheral Equipment Modules). Meridian 1 system option 21 Page I r Equipment 1111 Page 66 Product description Meridian 1 System option-61 The Meridian 1 System option 61 package includes 2 CPU/Network 2 Conference and TDS cards, 1 SuperLoop Network card, 2 ~g&~y~~~ ................. ........ I-~:::~~ ::::::::i:;:::i: . . ~CPl- r ........ Page Page Product description 69 Table 5 System option 71 specifications Power Distribution Unit and Contains Page List of terms Page cc co Page Page Page Page Page Page Page Page Page System overview nit northern tolocom System options 21,51,6.1,71 Installation planning Page S-1 Page Preface Notice Page Page Page Related documentatiori Page Planning activities Researching the requirements 7 Planning the site 39 --- Preparing for delivery 55 Preparing for installation 59 Page Planning activities The installation outline Page Hold The Milestone chart tasks. Page Researching the requirements General requirements The equipment room environment q Table 4 shows the SC-1 operating en?rironment In addition to proper operating temperaturq Environmental factors Electromagnetic Interference (EMI) Dust Air conditioning requirements El Page Sk-l system power options - DC-powered SL-1 systems AC-powered SL-1 systems- Commercial AC power source Input power specifications The following tables provide input system power specifications as required for to 500 50 276 Grounding Commercial power and grounding requirements Building ground requirements Grounding guidelines --- AC service panel I J ~~~~l~~ing I I I I I I I Page 26 Researching the requirements Figure 2 Dedicated transformer in non-isolated ground system Installation planning 553-3001-120 (Receptacle) -Ad - 1, ___L__ Page Page 3: 20 30 Page Page Auxiliary power requirements CabHng Page Cable access requirerients Fire protection and safety precautions q Page Page Planning the site Selecting a site Developing the site The equipment room Equipment room accessories The floor plan The weight and dimgnsions of the SL-1 system should also be considered: ~qg~~w , / Page Page Floor loading estimates Page Page Figure 8 Sample building cable plan Installation planning 5!53-3001-120 Wire routing Termination points Page Page Preparing for delivery Considerations Page Equipment handling precautions Page Preparing for installation Work orders Equipment room floor plans Cabling plan The installation plan Manuals Preinstallation inspections Equipment room inspections General inspections Reserve power inspections Page Installation planning mt northern talactlm System engineering Meridian northern talaeam I Page System engineering Page General information Page System organization and capacities Definitions 27 Provisioning guidelines 41 Step 1 43 Page 68 71 77 Tables System organization and capacities Page Page Page Page Universal Equipment Modtiles Page Page Page l-1 CPU/Network UEM (NTGD39AAIDC) Table 1-3 Identification of CPU/Network UEM (NTGD39AAIDC) Unit Number-required 18 ~6 Page l-l CPU UEM (NT8D34AAIDC) Table l-4 Identification of Single CPU UEM Unit Number- required Page Network UEM (NT8D%AA/DC) Table l-5 Identification of Network UEM hit Number_ required s8 16 ~8 Page Intelligent Peripheral UEM (IPE) &ipment (NT8D37AAlDC) Table l-6 Identification of IPE UEM Unit Number required Page Page Page RPE UEM (NTBD47AtiDC) Table l-9 identification of RPE UEM Unit Number Number per UEM perJtPE loop Page 1-22 System organization II-- III-I InterGroup UEM (NT8D36AA) IGSO I System capacities Page Definitions General rules Page Page 2-4 Definitions 7Y Traffic distribution illustrated in The traffic distribution in the SL- 1 is Figure 2-1. This illustration is valid when considering individual customer or system traffic. Page Equipment utilization Network loop traffic Partitioning Network loop assigning PE card distribution Intelligent Peripheral Equipment card slot (.IPE) assigning Card slot priority Page Assigning cards Terminal number assigning Ongoing assignment plan Cutover study Threshold study Equipment relief Assignment records Page Provisioning guidelines Page Step 1: Define and forecast growth Page Step 2: Page Provisioning guidelines 3-7 Table 3-2 Example of cc&t averaging when drily trunk c&t are known Manual calculation of c&t CCS/T Line CCS/r This method is used for each trunk group inIhe Table 3-3 Estimated load per trunk (ccs) Default method Page Step 3: Calculate number of trunks required Trunks required Step 4: Calculate Line Line, trunk, and console load _ load Step 5: Calculate DTR requirements Model 1 Model 2 Model 3 Model 4 Detailed calculation: method 1 Detailed calculation: method Step 6: Calculate total system load Step 7: Calculate number of superloops required Non-blocking configuration with Superloop Network Blocking configuration with Superloop Network DTI/PRI Enhanced Network Cards (QPC414) cards Page Step 8: Calculate number of Network groups required Step UEMs Calculate number of PE Step 9: Calculate number of PE cards required 10: required Step 11: Step 13: Page Feature calculations Calculations with Authorization Code Calculations with Centralized Attendaht Service (CAS) Calculations with Charge Account for CDR Calculations with Direct inward System Access (DISA) Calculations with Integrated Message Service (IMS) Page Worksheets Worksheets 5-l Page Page Page Page Page Worksheet C continued 12960 Digitone Trunks are used. Page Page Page Page Page Page Page Output Page Page Page Page Page Page Page Page Page Page Page Card distribution WorksheetN Loop number TOTAL Page Page Page Page Page Page Page Page Page Tables Tables 6-1 6-2 Tables Table 6-1 Trunk traffic (Poisson 1% blocking) T ;or trunl Page Page Page receivers digitone line! (CCS) receivers digitohe lines Note: Page Number of Maximum digitone Digitone Number of Maximum 0 0 10 11 12 13 15 16 17 18 19 Page Page I Number of digitone Number of digitone Page Network loops Tone and Digit Conference loops required at 2 years Switch required loops required I ports System options 21,51,61,71 System engineering Page Page Generic Xl 1 Memory calculations Page General Memory description 3 Memory calculations 9 List of terms 163 Page General Page Memory description Page Memory Generic 711 (S and MS) Memory Generics 811 and 911 (N and XN) Memory Generics 1011 (ST) Templates Page Page Memory calculations Package dependencies Page Page Page OF-IF continued Page Program Version Storage in KSComments continued 0.64 continued Version Storage iu K 1.54 continued TAD 711 R4-5 0.71 911 continued Page Page Page Page Page Program Version Page Page Page Page Version Storage in KS Comments continued Memory continued Program Version Storage in KSComments 1.11 continued Page Page BQE Version Storage in KS continued VTRF continued NCOS 2.90 continued ssc 711,811,911,1011 continued 911 R14 2.98 Page Storage in K (lK = 1024 words) Page Page Page Page (1K 1024 words) MUS 711 continued Page Page GRP continued Page Page Page Page Page Program Version Storage in KS Comments PQm continued OHQ (1K = 1624 words) continued SNR continued CommentsStorage in K continued Page Page Page Storage in K continued Page Page Page Page Page Page (1K 1024 words) Yl-DS continued Page UK = 1024 words) continued Page Page Page Page FTC continued Comm+ts continued Page continued Page Version Storage in Ks Comments (1K = 1024 words) Overflow (base) (Note 3) continued (1K = 1024 words) Total of All Optional Packages (Note 4) 711 R4 continued (1K = 1024 words) Storage in K Overflow (base + all optional packages). (Note 4) Page Page Version Storage in Words continued Page Page 539154 1 continued Table continued Page Page Page Page data BGD continued 6x Page Page Page Page Page Page Page Page Page (1) (9) Page Page Page Page Page Page Page Page Page Fixed amount of storage required for system operation. For EACH of the following: continued Page Page -continued Page Page Page Page Feature Version continued Page Page Page Version Storage in Words Page Page Page I In addition to the basic line block requirement, each feahue requires extra data space as follows: Feature R46 continued 2 R7-12 Feature m-5 continued R7-12 R13 R14-15 14 Page In addition to the basic linebloclc, each fea@re requires extra data space as follows: Page Page Page 140 Memory calculations Speed Call Quick Reference Chart Memory calculations Page Page Page Page see = Page Page Page Page Page Page Page Page Page Page Page Page Page Page B+(Xx@+A)) Page Page Page Page Page Page Page Page Page Page Page Page Page Generic Xl 1 Memory calculations Page Page Power engineering Page Page Page Page Reserve power 47 Engineering and configuration guidelines 57 Power conductors 69 List of terms 73 SL-1 system power overview General information AC or DC powering I M I m Page AC power system description Input power specifications Internal power distribution / / Pedestal Power Distribution Unit (PDU) Module to Module Harness Module Power Distribution Unit (MPDU) Module to Backplane Harness AC Power Supplies Output External power distribution and ground connections .-_ -----H--s------------H--s------- 99 General notes for AC figures Single column AC powered system Multi-column AC powered system Multi-row AC powered system Extended systems III II H Page DC power system description 19 Input power specifications I. Internal power distribution Pedestal Power Distribution Unit (PDU) Page Module to Module Harness Module to Backplane Harness DC Power Converters Output v Table 10 Ringing Generator Nl7W3AA Output VNA Output. F output voutput A Table 11 Common/Peripheral Equipment Converter output v output A Output VIVA External power distributioh and grounckonnections General notes for DC figures Page Figure 10 Multi-column distribution with NT6D52 and QBLl5 Page Figure 12 Multi-column distribution with I QBLl2 customer power 120v -tIIIII 11111 ~~ System grounding Single Point Ground But, Additional requirements Isolated ground topology Non-isolated ground topology Operating power requirements Introduction Circuit pack power consumption Page i Module power consumption System power calculation guidelines Wired-for method 208 As-equipped method .- Page Page Qtv Page Page Thermal considerations Page Page Reserve power -- AC reserve power sizing Recommended UPS vendors and models Page Page I1 Figure 14 AC reserve power configuration DC reserve power Page Engineering and configuration guidelines AC power architecture ^ Internal AC power equipment components Page Page : internal DC power equipment components. Ringing Generator DC (NT7D03AA) Pedestal (NT7DOSAA) External DC Power equipment components Page Page Commercial power and grounding requirements Page Page Power conductors Wire size calculation guidelines The formula Examples Page Page Page List of terms Page Page Power engineering Spares planning Page System options 21,5-l, 61,71 Spares planning Page General information Page Page Page Spares planning Definitions and assumptions Page The turnaround timk for the return &I stock of a failed item is about two days from a centralized depot, (See Figure 2.) Figure 2 Centralized depot service Page Calculating spares requirements Page Tables: NFT values Page Page Page Page Page Page 14 Tables: NFT values Table 1 continued Stock quantity of spares Spares planning 553-3001-l 53 Failure rates Page Page Page Page / Page Page Page Page ist Page Q=l Q QM-I-2 Page N/A Spares planning nit northarn talocom System options 21,51,61,?1 Page Equipment identification and ordering information Page Page Page Page Common Equipment cards Peripheral Equipment cards -39 Station equipment 51 Cabling 71 Miscellaneous equipment 87 List of terms 91 General Equipment packages Conversion and expansion packages Equipment availability Special features Product coding Page Page Universal Equipment Modules and packaging NT6D39DC NT6D39AA, CPU/Network Module NT6D44AA, NT6D44DC Meridian Mail Module NT8Dll AC, DC CE/PE Module NT8D13AA, NT8D13DC Peripheral Equipment Module NT8D34AA, NT8D34DC CPU Module NT8D35AA, NT8D35DC Network Module NT8D36AA Inter Group Module NT8D37AA, NT8D37DC Intelligent PE Module .: : NT8D47AA, NT8D47DC Remote PE Module NT8D49 Spacer Kit NT8D55AA Universal Equipment Module cover Universal Equipment Module side panel Card cage assemblies Top Cap Pedestal Page Power and cooling equipment A0367754 Top Cap Fan NTSC03BJ Switched Mode Rectifier -48V/50A _- NT6D40AA Peripheral Equipment Power Supply DC NT6D41AA Common Equipment Power Supply DC NT6D52AA Switched Mode Rectifier -48W30A NT6D53AA Junction Box Power NT6D5303 Logic Return Equalizer NT7D0003 Fan and Sensor Panel NT7D03AA Ringing Generator DC NT7D04AA CE/PE Power Supply DC NT7DlOAA Power Distribution Unit DC NT7D12AA Rectifier Rack System option System Monitor NT7D15AA NT7D17AC Fan Unit AC NT7D17DC Fan Unit DC NT8DOGAA NT7D1201 Rectifier Baffle/Mounting Kit NT8D21AA Ringing Generator AC NT8D22AB System Monitor NT8D29AA Common Equipment Power Supply AC NT8D39AA Power Failure Transfer Unit NT8D52AA Blower Unit NT8D52DC Blower Unit NT8D53AB Power Distribution Unit AC NT8D53AD Power Distribution Unit System option 21A NT8D56AA Module Power Distribution Unit NT8D56AB Module Power Distribution Unit NT8D57AA Module Power Distribution Unit NT8D62AA, NT8D62DC Temperature Sensor Panel QBLI 2 Battery Distribution Box QBLI 5 Power/Battery Distribution Box. QCA13 DC Power Plant QPCI 88 Battery Monitor QRF12 -52 V Rectifier Page Common Equipment cards NT8D04AA Super-loop Network NT8D17AA Conference/lone and Digit Switch (TDS) NT8Dl8AA NetworWDigitone Receiver NT8D19AA Memory/Peripheral Signaling NT8D41AA Serial Data Interface paddle board (Dual Port) NT8D68AA Floppy Disk Unit Multi Disk Unit NT8D69AA .- j QMM42 Security Data Cartridge .i QPC43 Peripheral Signaling QPC215 Segmented Bus Extender QPC412 Intergroup Switch QPC414 Network QPC417 Junctor Board QPC441 Three-Port Extender QPC471 Clock Controller PU QPC477 Bus Terminating Unit QPC513 Enhanced Serial Data InterFace QPC579 CPU Function QPC581 QPC580 CPU Interface Changeover and Memory Arbitrator QPC584 Mass Storage Interface QPC687 CPU with SDVRTC QPC720 Primary Rate Interface QPC742 Floppy Disk Inte-rface QPC757 D-Channel Handler Interface QPC841 Four-Port Serial Data Interface QPC939 Read-Only Memory QPC940 Read-Only Memory Peripheral Equipment cards NT8DOl AD Controller-2 NT8DOl AC Controller-4 NT8D02AA Digital Line card NT8D03AB Analog Line card NT8DOSAB Analog Message Waiting Line card NT8D14AA Universal Trunk NT8D15AA E&M Trunk NT8DlGAA Digitone Receiver QPC62 1.5 Baud Converter QPC65 Rernote Peripheral Switch QPC66 2M Baud Converter QPC67 Carrier Maintenance QPC71 E&M/DX Signaling and Paging Trunk QPC99 Carrier Interface QPCI 92 Off-Premises Extension Line QPC237 4-wire E&M/DX signaling trunk QPC250 Release Link Trirnk QPC297 Attendant Console Monitor QPC422 Tone Detector QPC430 Asynchronous Interface Line QPC432 4-Port Data Line QPC449 Loop Signaling Trunk QPC450 CO/FX/VVATS Trunk QPC578 Integrated Services Digital Line QPC594 16-Port 500/2500 Line QPC723 RS-232 4-Port Interface Line QPC789 16-Port 500/2500 Line (Message Waiting) QPCSI 8 High-Speed Data Card Station equipment Meridian Modular Telephanes Page Page Page Page Page Page Page Page M2000 series digital telephones M3000Touchphone NE-500/2500 telephone set Ml250 and 2250 attendant consoles Attendant administration overlay template QMTI and QMT2 key/lamp expansion modules QMT3 lamp field array module .- QMT4 handset module data QMT12 add-on data module QMT21 high-speed QMTI 5 amplified handset module module QKKI handsfree remote powering kit QKK3 automatic handsfree interface kit QKK8 automatic handsfree interface kit QKM13 light probe kit Page Meridian programmable data adapter . Teledaptm Page Table 4 Station equipment replaceable items Equipment Replaceable items Apparatus number Page Page Cabling IAE NT7Dl module-to-module power harness Page NT8D46AD System Monitbr SDI cable board NT8D46AG System Monitor to SDI paddle cable NT8D46AH System Monitor to MDF cable NT8D46AJ System Monitor to UPS (Best) cable NT8D46AP Extended System Monitor Serial Link cable NT8D46AQ System Monitor to UPS (Exide) cable NT8D46AS System Monitor inter-CPU cable NT8D46AT System Monitor to QBLIS cable NT8D46AU System Monitor to UPS (Alpha) cable NT8D46AW System Monitor to QBL12 cable NT8D46DC Air Probe harness DC NT8D73 Inter-cabinet Network cable NT8D74 Clock Controller to Inter Group cable NT8D75 Clock Controller to Clock Controller cable NT8D76 Intergroup Switch to Inter Group cable NT8D77 FDI to FDU cable NT8D78AA CPU cable NT8D79 to Clock Controller cable NT8D80 CPU interface cable cable NT8D84AA SDI paddle board (dual. port) to cable NT8D85 Network to PE cable NT8D86 Network to cable- NT8D90AF SDI multiple-port cable NT8D88 Network to NT8D87 Conference/TDS to music trunk cable NT8D91 Network to Controller cable NT8D95 SDI NT8D93 SDI paddle board (dual port) NT8D92AB Controller to 97AX MWDF PRllDTl to NT8D99 CPU to Network cable Echo Canceler to NT9J94AB RPE to NT9J93AD cable NT9J97 Intra-column Network cable NT9J99 NT9J98 Intra-cabinet Network cable QCADI 28 connector cable QCAD274A AC power cord Page Miscellaneous equipment Field Wiring Kit Blank Faceplates NT8D63AA Overhead Cable Tray Kit Earthquake Bracing Kit QRY551 Channel Service Unit TELLABS 251 24-Channel Digital Echo Canceller BIX Cross-Connect System Page Northern Telecom Publicatidns Title and description Qrder number List of terms cc co Page Page Page Page Equipment identification and ordering information Et narthorn t~lacom ti MERIDIAN northtzrn telecom SERIES DIGITAL TELEPHONES Page Page Page Page l cl . . 0 rl . . . rl &51-~ ... . cl .Wl-. cl cl Page Page Page Page Page ,: :. : E Page Page Page Page Page Page Page Page Page COLLECT LOOP MAKEUP DATA AND CALCULATE EPL Fig. 1006-l Junction Loss vs Cable Characteristic Impedance Page %. Page Page northem tdaconl MERIDIAN INTEGRATED SERVICES NETWORK SL-1% SUMMARY OF TRANSMISSION PARAMETERS Page Page Page Page Page Page provided. Page .: Page Page Page Page Page Page Page I+ Page Page Page r nit Page Analog line card description Page Page Page Page Page General information Application - Functional Technical summary Analog line interface Message channel noise (dBmC) Power requirements NT8D03AB Foreign and surge voltage protections .- Overload level Page Options 21,51,61,71 n# Analog line card description nartharn tolocom Et northorn fdocom Meridian1 Page SL-1 Digital line card description- Page Page Page Page Page General information Requirements Page Description . Meridian SL-1 data block Physical Functional Configuration Power supply to digital telephones mA)l I Page r%t Page Page Analog message waiting line card description Page Page Page Page Page General information 2 General information Analog message waiting line card description 553-3001-l 63 Application Page Functional Page Technical summary Analog line interface Message channel noise- Power requirements NT8DOSAB Foreign and surge voltage protections Overload level Analog message waiting line card description rEt nartharn talaccrm MERIDIAN SL-1. Page Page Page Page Page Page Page + Page Page (6) PRACTICE 553-2201-184 --------------- (=I--------- 1 d-ky Page PRACTICE 553-2201-184 , Page 4-5 n I I- Page Page Page rut northern tukcom Line circuit pack. Changes are indicated by margin arrows. Message Waiting 16-Port Page Page Page .,: Page Page Page Page Page Page Page Page _- Page Page Page Page Page l+l i Diagram of a double density 50012500 Line Pack Block T QPClg2/292 i-------------------------------- Fig. 5-2 Block Diagram of _----------_-__---~_-------~~~~~~~~ 1 5-8 Pege Line Pack QPC594/729/789 nit northern ttdocom MERIDIAN SL-I.. reference information on digital telephones. Changes are indicated by arrows in the margin.