Table of Contents | Telos ZephyrExpress specification

Table of Contents

More comprehensive tables of contents, with page numbers, are at the start of each section. A complete index follows section 11.

Section 1: Quick Results

Part I: Instant Gratification, or ÒHow to hear stereo music on a phone lineÓ

Gather information about your ISDN line Set up the hardware

Configure ZephyrExpress for your ISDN line. Call yourself (testing your unit and the line) Tune into one of our test lines

Part II: Fast Answers to Frequently- Asked Questions

Section 2: What YouÕve Got

Here...

THE BEST WAY TO HEAR FROM THEREª

Introducing ZephyrExpress

Features and Benefits

Introducing ISDN

ISDN Configurations

Introducing Audio Coding

About coding delays

About Layer 2 and Layer 3 Coding Compatibility and proprietary coding

About Telos Systems

Making ZephyrExpress work for you

Section 3: ZephyrExpress Hardware

About our hardware...

Front Panel

The Mixer Section

Display section

Control section

Rear Panel

Data connection section

Audio i/o section

Power connection

Section 4: Audio Operations

Aconsole at your fingertips...

The Send Mixer The Monitor Mixers Receive Meters LOCK lights

Analog (G.711) phone calls Dealing with Delay

Section 5: Audio Coding

OVERVIEW

Introduction to Audio Coding

Basic Principles of Perceptual Coding

ISO/MPEG LAYER 3

Layer 3 Features

ISO/MPEG LAYER 2

G.722

CASCADING

CHOOSING THE CODING METHOD FOR YOUR APPLICATION

Compatibility

Section 6: Menu Reference

The Menu System

Menu Overview

Using Setups

Applying a Setup

Creating or Changing a Setup Master Setups

Applying a Master Setup

Creating or Changing a Master Setup Autodial Setups

Menu Details

Codec menu

Audio menu

ISDN menu

System menu

Safe mode menu

Introduction vii

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Telos ZephyrExpress user manual Table of Contents

Contents

Manual Version 1.0 / April UserÕs Manual What youÕve got here Feedback Customer Service Test Lines Blank Screen?ZephyrExpress will dial a test line for you Trademarks UpdatesPower Supply Warranty Repairs Table of Contents System Functions TroubleshootingSchematics and Data Sheets Appendix Isdn Reference Introduction H i c t Block Diagram Utility Menu Menu Structure Tune into one of our test lines Quick Results Quick Results Part Gather information about your Isdn line Isdn telephone numbers with area code Isdn type, check oneMSN numbers, i f supplied Euro ETS300 only Set up the hardware Quick Results HConfigure ZephyrExpress for your Isdn line Quick Results Configure the Codec Call yourself testing your unit and the line HOT TIP Place the call to yourself Set up an audio input and output Quick Results Tune into one of our test lines Isdn TIP Knob either direction to change the LCD Contrast Fast Answers to Frequently-Asked QuestionsHe Basics What do I do if IÕm totally lost? Scrollbar Highlighted How do I use the menus? Right How do I use a menu that appears locked?How do I lock a specific menu? How do I enter numbers or names? H6 How do I create my own Setups and Master Setups? HOT TIP How do I test that IÕve set things up properly? How do I manually enter a network setup? What do I do if I canÕt connect? Alternate test procedure How do I use line-level sources? Audio setup How do I set ZephyrExpress for my microphones? How do I create a monitor mix? How do I test my audio and compression setups? Isdn Connection How do I place a call? HHOT TIP What do I do if they canÕt hear me? How do I hang up? How do I send a test tone? Where do I find answers to other questions? Circuit information · 1-4 coding methods · Quick Results Zephyrexpress Hardware Front Panel About our hardware Send Mixer Mixer Section Level Controls Monitor Mixers Send and Receive Meters Display sectionLock LEDs LCD Display Edit knob Control section Dial button Drop button Rear Panel Data connection section Mode switchesIsdn Connections Interface Pinouts Line C Top pin Remote Control jacks Output 12 N/C Input 15 N/C RS-232 PinoutsParallel Port Inputs Audio i/o section About the XLR ConnectorsOutputs Ground Audio + All XLR PinoutsMicrophone Inputs ZephyrExpress Direct Isdn Receive outputs Line InputsConductor Input plug Monitor 1 XLR outputs Headphone Jacks Power connectionPower Supply Jack Monitor 1, Monitor 2 Headphone outputs Power Supply XLR Output Power Input+5Vdc @ 5A +12Vdc @ 1.5A 12Vdc @ .5A System Ground Zephyrexpress Hardware Zephyrexpress Hardware Audio Operations Mix flexibility Console at your fingertips Routing Send Mixer Beware the Phantom Compression, will make any perceptual coder less efficient Mic Routing Switches Bold Face Front Panel Hardware Line Routing SwitchGain Routing, convert the mic inputs to line-level Send Meters Send Level Controls Send Monitor Routing SwitchesMonitor Mixers Receive Meters About Monitor Panning Monitor 1 Send Adjusting individual monitor panning Lock lights Receive Meters Talkback and cues can cut the cost of remote broadcasts Analog call signal routingAnalog G.711 phone calls Receiving calls Hanging up Placing calls Mix-Minus Dealing with DelayPhones and Remotes Remote Site Audio Operations Compatibility Layer 3 Features Introduction to Audio Coding Overview Basic Principles of Perceptual Coding Coding Psychoacoustic Masking Layer 3 Features Bands Redundancy ReductionBit Reservoir Buffering Ancillary Data Layer 3 Joint Stereo Layer 2 Joint Stereo 722Layer 2 Mono-128 Cascading Mixed Mpeg Layer 2 And Layer 3 Signal Chains Layer 722 Audio Coding Comparison ChartAlgorithm Audio Freq. Response/mono Audio Freq. Response/stereo With two transmission paths Delay vs. QualityDual vs Stereo vs Joint Stereo in Layer With one transmission path With two transmission paths Dual Site OperationLayer 2 Mono64kpbs vs MONO128 Dual vs Jstereo With one transmission path Sampling Rate Between Telos Codecs CompatibilityWith Non-Telos Equipment Coding Coding Codec menu Audio menu Isdn menu System menu Safe mode menu Autodial SetupsMenu Overview Typical menu Menu System Navigation Shortcuts Weõre not Fortune Tellers Getting Help Utility Menu Menu Overview Applying a Setup Using SetupsCreating or Changing a Setup Applying a Master Setup Master Setups Auto-creating a new Master Setup Creating or Changing a Master Setup Updating an existing Master Setup Manually creating a Master SetupDeleting a Master Setup Creating a new Autodial Autodial SetupsEditing or deleting an Autodial Codec menu Menu Details Isdn TIP Audio menu See , Audio 75 dB @ 100 Hz -10 dB @ 40 Hz Isdn menu Directory Number 7 digits System menu Seconds Minute Minutes Minutes Never Safe mode menu Menus Background Basic Rate Interface BRI Ordering Central Office Switches and ProtocolsZephyrExpress Isdn Compatibility Background Isdn Basics Isdn TIP Basic Rate Interface BRI Spids Get the SPIDs Get the SPIDs Long-Distance Digital Connectivity Directory Numbers DNs Dealing with The Phone Company Switch carriers CSD and CSV Details, Details Terminals and Terminal Types ZephyrExpress Isdn CompatibilityProtocols NT1s National ISDN-1 USA and Canada Ordering Central Office Switches and Protocols1 AT&T Point-to-Point Custom USA, Japan, Israel, some others Zephyrexpress Settings for YOU to Enter AT&T Point-to-Multipoint Custom Zephyr Settings for YOU to Enter Euro-ISDN Europe, Hong Kong, some others Isdn System Functions Introduction Software Updates Serial Port ZephyrExpress data ports Pin Ground CommunicatingPin Hello, ZephyrExpress Security Levels Login user ¶ Command Help Command Language Details Compatibility Note Display current encoder input & decoder Kept # for decimal numbers Times Ground, the call is dropped Parallel Port System Functions Troubleshooting First Steps General Thinking About Problem Solving Troubleshooting Front-panel LEDs Diagnostic AidsOther Ideas Look into the Lights NT1 status LED TheyÕre disconnected during Far Loopback modeFar Loopback for local audio testing Loopback modes Block diagram of the audio circuitry during Far Loopback Near Loopback for codec testing Far Loopback from the distant studio OperationLoopback Summary No functionality the box is totally or partly dead Some Error Conditions Site B, but works perfectly when site B calls site a Condition Isdn Connecting OK, But No Audio Condition Audio In One Direction Only Condition No Audio In Both DirectionsCondition Audio Distorted Condition CanÕt Get Isdn Ready Ready Indication Isdn ProblemsError Messages Condition Major Echo Action Dial, itÕs likely that your line is really National ISDN-11 Ready when the switch type is set to PTP, and you cannot Really Important Isdn TIP Can you place a pots call? What does the Isdn Cause phrase say? Isdn Cause Phrases/Values Intermittent Isdn Problems Cause No No prefix Cause No No route to destination. Prefix 1 dialed in errorCause No Check number, redial Cause No No route to network Cause No Number changed Cause No No far end responseCause No No answer Cause No Call rejected Cause No Net out of order Cause No Net problem, redialCause No Access information discarded Cause No No circuit available Cause No Incompatible bearcap Cause No Service operation violatedCause No Resource unavailable Cause No Requested facility not subscribed Cause No Message type nonexistent or not implemented Cause No Invalid information element contentsCause No Timeout disconnect Cause No Protocol Error, Unspecified Troubleshooting Schematics Appendix Level, Gain, dBu and dBm ÒNominalÓ Levels Codec Compatibility Information CCS Comrex Intraplex CCS CDQ1000 Comprehensive ZephyrExpress Compatibility ListDialog YouCom Comrex Layer-II DX-200 CCS CDQ2000CCS CDQ2001 CCS Prima Philips MPR Baby Blue PKI G.722 phonePKI Magic Philips MPR LIIBlue WWW Phone EdNet Telos World Wide Web site AudiobahnWWW Paper Digifon List List of Known Working SPIDs by Telephone Company Southwestern Bell Northern Pittsburgh Tele- phoneNynex Pacific Bell Company Telephone Number Worldwide WEB Ordering Isdn Protocols IOC Capability Packages CSD and CSV SPIDs56/64kbps Terminals and Terminal Types NT1sLong Distance Carriers Faxable Isdn Order Form for use in US only From Location for line Faxable Isdn BRI Line Order Form Page 1 Protocol AT&T Point-to-Point Custom Protocol National ISDN-1CO Values Not supported by ZephyrExpress Protocol AT&T Point-to-Multipoint CustomProtocol Northern Telecom DMS100 ÔFunctionalÕ Custom, PVC1 Give us Appendix