Manuals / AT&T / Communications / Telephone

AT&T 1987 AT&T All Rights Reserved, To Order Copies of this Document Refer to Document Number

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© 1987 AT&T

All Rights Reserved

Printed in USA

TO ORDER COPIES OF THIS DOCUMENT REFER TO DOCUMENT NUMBER 555-520-200.

Contact: Your AT&T sales representative or

Call: 800-432-6600, Monday to Friday between 7:30 am and 6:00 EST, or

Write: AT&T Customer Information Center

2855 North Franklin Road

P.O. Box 19901

Indianapolis, Indiana 46219

Every effort was made to ensure that the information in this document was complete and accurate at the time of printing. However, information is subject to change. This document will be reissued periodically to incorporate changes.

Reference Manual Prepared by System 25

Document Development Group and the AT&T Documentation Management Organization

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AT&T manual 1987 AT&T All Rights Reserved, To Order Copies of this Document Refer to Document Number

Contents

AT&T System 1987 AT&T All Rights Reserved To Order Copies of this Document Refer to Document NumberRepair Instructions Means of ConnectionNotification to the Telephone Company Hearing AID Compatibility Private Line ServiceRights of the Telephone Company FCC Registration InformationFCC Warning Statement Contents Section OverviewOverview OrganizationSystem 25 Description MerlinSystem 25 Block Diagram Business Communications Needs SafetyCall Handling Capabilities PDC Incoming Business CommunicationsDid Outgoing Business Communications Internal Call Movement Data Communications Page Growth & Rearrangement Page Conclusions List of Figures SmdrSAT BISStarlan LED Considerations Administration RequirementsDescription InteractionsSystem Features Feature Name TypeFeature Name Network FeaturesData Features FeatureStation Features Feature Name SINGLE-LINE Multiline Terminal Button Label †Attendant Features Feature Name Console Button Label † TypeAccount Code Entry Interactions Attendant Call Extending Selector Console optional Attendant CAMP-ON Interactions Call Coverage/Direct Group Calling DGC IfNone Attendant Cancel Attendant CONSOLE, Direct Trunk Direct Trunk Attendant ConsoleDual Console Operation Position BusySystem Assign Primary Secondary Attendant Direct Trunk Attendant Console Connections Attendant CONSOLE, Switched Loop Fixed Buttons FigureProgrammable Feature Buttons Figure Attendant Message Waiting Attendant Message Waiting Used byDSS Display FigureSwitched Loop Operation Console Buttons and DisplayAnswering a Call on a Loop Button Placing a Call on a Loop ButtonCall Types RingingAttendant Features Call OriginationsSwitched Loop Attendant Console Connections Attendant Direct Extension Selection Model 23A1 Attendant Direct Extension Selector Console Considerations Attendant Direct Extension Selector Console Connections Attendant Display V2 Slac Only Call Information DisplayIncoming coverage call Incoming did callIncoming call from a system user Outgoing trunk call Returning parked callCall from console to system user Conference 3 Conference set up by attendantInspection Mode Conference 4Timer Functions Attendant Forced Release V2 Slac Only Only JoinAttendant Message Waiting Systems with Switched Loop Attendant Consoles Slac Systems with Direct Trunk Attendant Consoles DtacCall Coverage Administration Requirements Manual Release Automatic ReleaseInteractions Attendant Return Coverage on Busy Administration Requirements Attendant Return Coverage on DON’T Answer Administration Requirements Attendant Source and Destination V2 Slac Only Attendant Splitting ONE-WAY Automatic Systems Technician Automatic Intercom Administration Requirements Automatic Route Selection ARS ARS Flow Chart ARS Routing Pattern Table FRLAutomatic Route Selection Flow Chart Sheet l Automatic Route Selection Flow Chart Sheet 2 0f Considerations ARS Hardware Requirements Automatic Route Selection Routing Pattern BUSY-TO-IDLE Reminder Call Accountability Call Accounting Page Facility Code #190-#199 is identified in this field Call Accounting System CAS CAS Model CAS Models 200, 300, 500,Page AT&T Call Accounting Systems CAS Model Stations Account CodesDate Time DUR FAC STN Account PDCAscii Character Description Valid Position Characters Column NumberAscii Character Description Position 12. Smdr Call Record Header FormatZ21OA Adapt 15. Smdr Output Equipment -On-Premises Switched Connections 16. Smdr Output Equipment-Off-Premises Direct Connections 17. Smdr Output Equipment-Off-Premises Switched Connections Standard Group Coverage DGC Group Coverage V2 only Page Administration Requirements Standard Group Coverage Interactions DGC Group Coverage V2 OnlyAdministration Requirements DGC Group Coverage V2 Only Sent to coverageCall COVERAGE-INDIVIDUAL Call Coverage -Group Unanswered Call Following Forwarding Interactions Call Park Considerations Attendant Selector Console Assign Call Park buttons Directed Call Pickup Group Call PickupAdministration Requirements Call Progress Tones Toll Restriction Facility Access RestrictionOutward Restriction ARS Restriction Hardware Requirements Data call or place Data call Voice call V2 onlyEXit Change options View options Options Current DefaultOptions HangupPartial List of Permissible Data Port TN726 Options Option DefinitionHost Modem Computer Users 18. Communications Access Manager Architecture Page 101 Multiline Voice TerminalsSingle-Line Voice Terminals Extended Stations An 102All Multiline Terminals Switched Loop Attendant ConsolesMultiline Voice Terminals except Slac 103104 Data Call Setup 106 Data EndpointsDTE Devices 107 Data Terminal Without Ascii KeyboardAscii Data Terminal With Keyboard DCE Devices Host Computer EndpointAnalog Data Endpoint 108Data Endpoint States Data Call Processing ModesConnecting Configurations Controlling Features111 Pause Dialed CharactersDialing Correction 112Answering Endpoint End-to-End SignalingCall Disposition 113114 Interactions End-To-End Signaling See above text 115Dial Code Assignments 116Data Dial Codes DDCs Voice Terminal Directed FeaturesPDC to Voice Terminal Association Direct Inward Dial did Number Assignments118 20. Dictation System Connections FCC Registered 11921. Digital Tape Unit 120121 122 123 Transfer For 124125 23. Delay Announcement Equipment Connections FCC Registered 126127 128 129 Access to Paging Zones and DGC Groups 130131 132 133 134 135 Activating Expert ModeMaking a Data Call User Changeable Options Activating the Third-Party Call Setup FeatureDial ExamplesInteractions Command Mode Command PECommand MY 137Conference 138139 24. External Alert Connections 14025. Supplemental Alert Adapter Connections 141142 Calls Eligible for Hands-Free ServiceBIS and Hfai Voice Terminals 143 Voice Terminals with HFUsVoice Terminals without HFUs 144 500A/502A Headset Adapters 145MET Headset Adapter 146147 148 149 150 151 152 153 154 155 Prime Line PreferenceRinging Line Preference Preselection 156Use Line Status Meaning Red LED Green LED L-USE IndicationsLED Indications 157158 159 Message Center Call Types Console ConfigurationsMessage CENTER-LIKE Operation V2 Slac Only 160161 162 Attendant Message WaitingCall Coverage Message Waiting Station-To-Station Message Waiting 163164 Calling Restrictions 165166 167 30. Music-On-Hold Equipment Connections FCC Registered 16831. Music-On-Hold Equipment Connections Non-Registered 169Directed NS 170Trunk-Answer-from-Any-Station 171172 AT&T 17332. Delay Announcement Equipment Connections FCC Registered 174175 176 177 178 179 180 Calls Placed to a PDC 181Calls Placed to a Floating PDC 182Direct Station Selection 183184 185 186 Facility 187188 189 190 35 B Emergency Transfer Unit ETU 36. Emergency Transfer Unit Connections 19237. Multiple ETU Arrangements 193CHAR. Used in Personal Speed Dialing Numbers Special CharactersChar Used in Repertory Dialing Numbers 194195 Char Used in Personal Speed Dialing NumbersTransmits an actual 196 To Program a Number by Using a CodeTo Program a Number by Using the Switch 197 198 199 200 201 202 203 204 205 Speaker 207 4A Speakerphone SystemS101A/S102A Speakerphone PEC 3163-HFU 38. Speakerphone Adjuncts 209 S102A210 41. Speakerphone Connections For 12-Button MET Sets 211Char Function System Speed DialingCHAR.FUNCTION 212Personal Speed Dialing 213214 215 System 25 Starlan Network Access AccessAccess 216 Communications Access Manager CAMStarlan Interface Circuit Pack Calls from System 25 to the Starlan Network Starlan Network View of SystemSystem 25 View of a Starlan Network 217Wiring 218219 ZTN78220 Common Administration default Administrable ParametersIndividually Administrable default ATL AdaptersCombinational Hunting Example Linear Hunting ExampleCircular Hunting Example 222Call Coverage Station 223224 Centralized Administration 225226 227 Backspace ReturnSAT Connection Information 45. Model 703 System Administration Terminal 228229 230 TYPICAL-103A Connection Block48. SAT On-Premises Switched Connections 23149. SAT Off-Premises Direct Connections 23250. SAT Off-Premises Switched Connections 233Permanent System Alarms System MaintenanceSystem Errors And Alarms Error s235 Error LogsAutomatic Maintenance Tests Trunk Number C o n d A t i o n Tandem TrunkingS c r i p t i o n 236237 T e r a c t i o ns TestN s i d e r a t i o ns 238Data Terminal source THIRD-PARTY Call SetupVoice Terminal source 239Setting Up a Third-Party Call 240AT&T Starlan Network Access Expert ModeAdministration Requirements Data Port T e r a c t i o ns Call CoverageTIE Trunks 242243 Touch Dial Pads TOUCH-TONE and Dial Pulse ServicesTouch-Tone Dial Pads 244T e r a c t i o n s 245246 Data Call Preindication Data Call Origination Using Transfer to DataTransfer to Data 247248 Trunk Groups 249S t r i c t i o n s e e Calling Restrictions N s i d e r a t i o n sC i l i t y 250251 TRUNK-TO-TRUNK Transfer 252253 User Changeable OptionsUser Changeable Options Definition 51. Command Mode Menu Tree 255 Viewing OptionsChanging Options-General 256 Changing Data Port SpeedEXit Low Interactions Expert Mode 257Virtual Facilities 258259 A R a C T E RF U N C T I O NExamples of Virtual Facility Numbers 260 Accessing a Virtual FacilityExample 261 MET TDMATL List of Tables Digital Switch System 25 Digital SwitchCommon Control Call Processor Circuit Pack ZTN82 or ZTN128Call Processor ZTN82 or ZTN128 Circuitry Interrupt Level Memory Circuit Pack ZTN81 or ZTN127 Timing and Control Logic CircuitSwitching Network TDM Bus Time Slot Generation Not a Timing DiagramPhysical Characteristics Electrical CharacteristicsTime Slot No Function TDM Bus Diagram -Three Cabinet System Port Circuits SINGLE-LINE Voice Terminals SMD Asynchronous Data Unit CAS Call Accounting System Translated, and yellow circuit busy Port Circuit Pack Common Circuitry Ground Start Trunk ZTN76 Unique Ground Start Trunk ZTN76 Circuitry Loop Start Trunk ZTN77 Unique Loop Start Trunk ZTN77 Circuitry 10. Unique Tip Ring Line ZTN78 Circuitry Page ATL Line ZTN79 Port Circuits11. Unique ATL Line ZTN79 Circuitry Data Line TN726 12. Unique Data Line TN726 Circuitry MET Line TN735 13. Unique MET Line TN735 Circuitry Analog Line TN742 14. Unique Analog Line TN742 CircuitryPage Did Trunk TN753 15. Unique did Trunk TN753 Circuitry Tie Trunk TN760B 16. Unique Tie Trunk TN760B Circuitry TN760B Tie Trunk Preferred Signaling Formats Signaling Type SummarySignaling Transmit Receive Type ON-HOOK OFF-HOOK Auxiliary Trunk TN763 18. Unique Auxiliary Trunk TN763 Circuitry Starlan Interface ZTN84 NetworkSaki Service Circuit ZTN85System Resources On-BoardPage 19. Service Circuit ZTN85 Tone Detector TN748 20. Tone Detector TN748 Circuit Capability Data Module Mode Pooled Modem TN758Page Maintenance Software Switched Services SoftwareAdministrative Software Memory AllocationCall Processor Circuit Pack Software PartitioningMemory Circuit Pack Port Circuit Packs Step-By-Step Call Description22. System Software Partitioning On the terminal ADU ListHfai SIPMadu Hardware Description System Cabinets J58901A1System 25 Cabinets J58901A-Three Cabinet System System Cabinet J58901A-Rear View Cabinets 2 and 3 Port Circuits Cabinet 1 Control and Port CircuitsCabinet Address Plug System Circuit Pack Configurations Total Port Circuit Packs Per System Optional Circuit Packs Circuit PacksRequired Circuit Packs System Resource Circuit PacksStation Port Circuit Packs Trunk Port Circuit Packs Circuit Pack CompatibilityCircuit Pack Features System Circuit Packs Title Circuit Number Circuit Pack Type PortsModel 500 Series Voice TerminalsSingle-Line Voice Terminals PFT554BMPA Summary of Voice TerminalsTerminal Circuit Pack Type Model Description Interface ZTN79Model 2500 Series Mode1 2500 Series Analog Voice TerminalsModel 7101A MD PEC 3170-00M Mode1 7101A Analog Voice TerminalSpeakerphone Speakerphone Voice Terminal Feature Operations Single-Line Voice Terminal Connection InformationMultiline Voice Terminals 7300H Series Voice TerminalsButton Voice Terminal 7302H01D PEC Button Voice Terminal 7302 HOlD Button Voice Terminal 7303H01D PEC Button Voice Terminal 7303HO1D Button Voice Terminal 7305H01D MD PEC Button Voice Terminal 7305HO1D MD For Use as a Direct Trunk Attendant Console Button Deluxe Voice Terminal 7305H02D PECFor General Use 10 -Button Deluxe Voice Terminal 7305H02D Hfai 11. BIS Voice Terminal 7305H03B Feature Buttons only 12 have associated LEDs For Use as a Switched Loop Attendant Console 12. BIS Voice Terminal with Display 7305H04BPage 13. Hfai Voice Terminal 7309HO1B Ten Button Multibutton Electronic Telephone MET 2991 C/D05 14. Ten Button MET Set 2991C05 Ten Button MET With Built-In Speakerphone 2993C04 15. Ten Button MET With Built-In Speakerphone 2993C04 Twelve Button MET Set 7203M 16. Twelve Button MET Set 7203M Multiline Voice Terminal Connection Information Voice Terminal AdjunctsVoice Terminal Adjunct Connection Information Voice Terminal Adjunct Power SuppliesSupplemental Voice Terminal Power Supplies Unit Output For USE withAsynchronous Data Units AD US 17. Asynchronous Data Unit ADU ADU Connection Information Z3A1 Unit PEC FeatureAsynchronous Data Units Optional Power Equipment Uninterruptible Power SupplyTrunk Access Equipment TAE AC Power Line Surge Suppressor346 Modular Bulk Power Supply 18. Trunk Access Equipment TAE Connections Adapters Station Interconnect Panel SIP617A Panel 19 a Station Interconnect Panel 20. Typical SIP Connections Connectivity Figures 21. On-Premises Single-Line Voice Terminal Connections 22. Out-Of-Building Single-Line Voice Terminal Connections SINGLE-ENDED 25 Pair Cable A25D 7300H Type Voice Terminal Ground Wire 26. Ten Button MET Set Connections TYPICAL- 103A Connecting Block ZTN78 TIP Ring Line CP 103A Connecting Block 30. Typical Madu Connections 31. Z3A1/2/4 ADU Local Power Connections Technical Specifications Hardware And Software Parameters TotalHardware And Software Parameters Contd Traffic Data Simultaneous Equipment Circuit Unit Load Pack PER Port Unit LoadsUnit Loads Note ZTN79 BISPack Feet Meters ZTN78 Supporting Gauge Wire CircuitCable Distance Limitations 5106mm Pack Feet MetersFeet Meters Data Rate Gauge WireData Terminals RS-232 Connected To Asynchronous Data Units Tones Indicator Lamp SignalsLamp Signal Tone FrequencyStation Type Circuit Pack Data Terminal Specifications Data Terminal Ports NoteZ3A4 ADU Data TerminalsData Requires Z3A1 Terminal Dtmf RENPort Specifications Contd Voice Terminal Ports Contd Station Type Circuit Pack SpecificationsTrunk Ports Trunk Type Circuit Pack Specifications Ground Start Voice Light Medium Heavy Terminals Traffic Recommended Central Office Trunk FacilitiesCalling Traffic Loss Analog Transmission CharacteristicsSignal Level Distortion Level Connection Type LossImpulse Noise Loop ResistanceConnection Bandwidth 64 Kbits Steady State Noise Level Single Frequency Return Loss Talking StateEnvironmental Requirements Floor Plans And LayoutsTypical System 25 Equipment Area Floor Plan Typical System 25 Equipment Area Elevation Plan Temperature and Humidity Wall Space RequirementsElectrical Noise RFI Air PurityLighting AC Power Requirements Single Cabinet SystemAC Power Distribution Multiple Cabinet System Grounding Lightning ProtectionParts Listed by PEC PartApparatus Code Comcode ZTN76 Merlin VTPart of 62512 62512 62512 Z3A5 ATL ADUZ3A4 ADU MOH10B ETU Starlan Network PEC Description Apparatus CodeCAM NEUPEC Description Apparatus Code Comcode 500BMPAMerlin BIS VT S C R I P T I O NMerlin Hfai VT IrobPEC CPU/MEMParts Listed by Comcode Comcode PEC DescriptionM C O DE PEC Description Apparatus Code M C O DE P E C Description Apparatus Code Merlin BISMerlin Hfai 105341382 1020-S91 Comcode PEC Description Apparatus Code AT&T Starlan NetworkBasic Manuals Supplementary MaterialDescriptions of Basic Manuals Terminal Operations Manual Planning ManualReference Manual User Guides 700 SeriesAppearance AdministerAnalog Voice Terminals Asynchronous Data TransmissionBit Binary Digit Auxiliary EquipmentAuxiliary Trunk Bridge BridgingBus, Time Division Multiplex Class of Service COSCommon Control Switching Arrangement Ccsa CCS Hundred Call SecondsCoverage Path ConsoleCoverage Call Coverage PointData Terminal Equipment DTE Delay-Dial Tie TrunkData Module Digital Data EndpointsFacility physical FeatureFeature Button Foreign Exchange FXIn-Use Lamp Home Numbering Plan Area Code HnpaImmediate-Start Tie Trunk Intercept ToneMultilane Voice Terminal Multifeature Single-Line Voice TerminalModem Pooling MultiplexedPersonal Dial Code ParameterPeripheral Equipment Pickup GroupPublic Network Random Access Memory RAMProtocol QueueSoftware SwitchSwitchhook SplitTime Division Multiplex Bus Wide Area Telecommunications Service WatsTie Trunk Tone RingerService Write OperationIndex 10-110-2 10-3 Line Contd10-4 Starlan Network