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Portable ISDN
Digital Audio Transceiver / Mixer
™
The Best Way to Hear from There
UserÕs Manual
Manual Version: 1.0 / April, 1999
(v1.2.1 software)
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What youÕve got here: ZephyrExpress is a portable, one-box solution for high-quality broadcast audio remotes via ISDN. It combines a flexible stereo digital mixer, two stereo monitor mixers, coder and decoder for international-standard audio data compression, and an ISDN interface. · You can plug microphones and a headphone in one end, an ISDN line in the other, and you’re ready for instant two-way 20kHz stereo transmission virtually anywhere in the world. ZephyrExpress communicates with Telos’
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Customer Service We support you... · By phone/Fax in the USA. Customer service is available from 9:30 AM to 6:00 PM USA Eastern Time, Monday through Friday at +1 216.241.7225. We’re often here at times outside of these, as well – please feel free to try at any time! Fax: +1 216.241.4103. · By phone/Fax in Europe. Service is available from Telos Europe in Germany at +49 81 61 42 467. Fax: +49 81 61 42 402. · By E-Mail. The address is: support@zephyr.com. · Via World Wide Web. The Telos Web site
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Blank Screen? If ZephyrExpress’ LEDs light when you first apply power but the LCD screen appears dark, or the LCD screen lights but no characters appear, the last user may have left its brightness or contrast at an extreme setting. To reset: ¥ Press the DROP button and hold that button in while turning the Edit p knob clockwise to reset the backlighting. It may take a few turns. ¥ Press the DIAL button and hold that button in while turning the Edit d knob either direction to change the LCD Contr
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Updates How ZephyrExpress works is almost entirely determined by software. This booklet is based on software version 1.2.1. Power Supply ZephyrExpress is powered by a separate modular power supply, which is self- adjusting to any voltage between 100 - 250 VAC, 50 - 60 Hz. It connects to a 4-pin XLR connector on the rear panel. The supply must be turned off at its switch, or disconnected from the AC line, before plugging or unplugging this XLR connector. WARNING: Do not use the XLR connector as a
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Repairs You must contact Telos before returning any equipment for repair. Telos Systems will issue a Return Authorization number which must be written on the exterior of your package. Be sure to adequately insure your shipment. Packages without proper authorization may be refused. US customers should contact Telos customer support at +1 216.241.7225. All other customers should contact their local Telos Dealer who will verify the problem and will contact Telos and arrange for repair. CAUTION: The
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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 Section 4: Audio Operations A console at your fingertips... Part I: Instant Gratification, or ÒHow The Send Mixer to hear stereo music on a phone lineÓ The Monitor Mixers Gather information about your ISDN line Receive Meters Set up the hardware LOCK lights Configure ZephyrExpress for your ISDN line. Analog (G.711) phone call
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Section 7: ISDN Reference ISDN BASICS Section 10: Schematics and Background Data Sheets The Basic Rate Interface (BRI) HOW TO ORDER ISDN Section 11: Appendix ZephyrExpress ISDN Compatibility ABOUT AUDIO LEVELS Ordering: Central Office Switches and Protocols CODEC COMPATIBILITY INFORMATION Comprehensive ZephyrExpress Compatibility Section 8: System Functions List Software Updates FINDING PUBLIC ISDN SITES List of Known Working SPIDs by Telephone ZephyrExpress data ports Company The Serial Port Th
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A Note From the President... Waaay back in 1984, Telos’ first product was being designed on a Radio Shack TRS-80 and the attached modem was considered to be respectably state-of-the- art, operating at the impressive speed of 300 bits per second. This was nearly three times the speed of the 110 bps, twenty-five pound, phone company-issue boxes I had been using over at the local college campus to talk to the hulking IBM in the bomb-shelter basement. The PC revolution had begun a few years back, so
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Notes About this Manual ZephyrExpress and the studio Zephyr unit share a lot of features in common, particularly in how they code audio and are connected to ISDN lines. In general, things you already know or learn here about one unit will apply to the other. We use the following symbols to draw your attention to particularly important points. DANGER! This symbol calls attention to the presence of dangerous voltages inside e ZephyrExpress. IMPORTANT! This information is essential to getting Zephy
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Block Diagram Introduction xi
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Menu Structure Utility Menu Codec ISDN Transmit Switch type Receive SPID #1 Bitrate SPID #2 Sample Rate DN #1 Compatibility DN #2 Ancill Data MSN #1 Status Out Loop Mode MSN #2 Contacts Out Outside Line Codec Setups Panic Dial Audio System Microphones LCD Contrast LCD Backlight Mic 1 Mic 1 Click Volume Sensitivity Sensitivity POTS Volume Phantom Power Phantom Power Menu Timeout Low Cut Filter Low Cut Filter Baud Rate Test Tone Test Tone Set Time Software Limiter Bypass About... Line Sensitivity
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SECTION 1: QUICK RESULTS Part I: Instant Gratification, or ÒHow to hear stereo music over a phone lineÓ 1-2 Gather information about your ISDN line 1-3 Set up the hardware 1-5 Configure ZephyrExpress for your ISDN line. 1-7 Call yourself (testing your unit and the line) 1-9 Configure the Codec 1-9 Set up an audio input and output 1-11 Place the call to yourself 1-11 Tune into one of our test lines 1-13 Part II: Fast Answers to Frequently-Asked Questions 1-15 Blank Screen? 1-15 The Basics 1-15 1
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If youÕre in a hurry... This part of the manual will get you started quickly. It presents answers to the questions that come up often when using ZephyrExpress. It’s not a thorough technical guide — that’s what the rest of this book is about — but a way to get you through most operating situations. If you need to put the unit in service immediately, or have experience with Zephyr or other similar ISDN codecs, this section may be all you need. It’s in two parts: · Step-by-step instructions for con
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was installed exactly as specified in the ISDN order instructions found at Telos’ web site and at the end of this manual. · Have circuit information supplied by the phone company. This must include the 1 type of switch on the circuit and the telephone number(s) . In the US, it will probably also include two SPID numbers. In Europe, it may include MSN numbers. · Have a ZephyrExpress, a microphone, and a pair of stereo headphones or other audio monitor. · Understand that these instructions are jus
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1. If you’re given two SPIDs by the phone company, enter just those numbers into ZephyrExpress. This is the most common case in North America. 2. If you’re given just one SPID, don’t enter it: instead, use the PTP setting for Switch . Type 3. If you’re in Europe you don’t have to enter anything. However, if you’re given MSNs and want to limit which numbers ZephyrExpress will answer, enter them for those numbers. There are also several different types of ISDN switching devices that can be used at
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Set up the hardware You’ll need: · A ZephyrExpress · The ZephyrExpress Modular Power Supply with an appropriate power cord for your local AC supply. The supply is self-adjusting for any voltage between 100 - 250 VAC, 50 - 60 Hz. It connects to a 4-pin XLR connector on the rear panel. The modular supply must be turned off at its switch, or disconnected from the AC line, before plugging or unplugging its XLR connector. You may connect the power supply to ZephyrExpress now, and then apply AC power
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WARNING! ZephyrExpress units sold in North America provide power for an external NT1. If w youÕre using one of these, disconnect any other power supply connec- ted to the NT1. If both ZephyrExpress and the NT1 are providing power, both will be damaged. You can tell if a ZephyrExpress will supply power by looking at the ISDN connections: if there are two telephone jacks, it’s a North American unit and you must follow the above precaution. If there’s only one telephone jack, it’s a European unit
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Configure ZephyrExpress for your ISDN line. HOT TIP! h There are two boxes on the bottom of ZephyrExpressÕ screen. If you see the word Ready in both of them, your unit is probably already configured for the ISDN line. Skip this step, and go right to ÒCalling YourselfÓ on page 1-9. If you see the word inact in both of them, your unit is not connected to a working ISDN circuit. Recheck your connections. ISDN TIP! i You can check ISDN continuity with an ordinary analog telephone or a pair of 600½ h
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Turn the EDIT knob three clicks clockwise, to highlight ISDN. U Then tap the knob in toward the panel. T The display will change to look like this: Turn the edit knob clockwise to highlight either SPID#1, DN#1, or MSN#1, depending on which type of number you entered in the form on page 1-4. The menu scrolls down as you keep turning the knob. Tap the edit knob in toward the panel again to start entering that number. The display will change to look something like this, depending on what kind of nu
