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TELOS iPort
Livewire-MPEG Gateway
USER’S MANUAL
Manual Version 1.1 for software version 1.0 and later
26 January, 2009
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Telos iPort Manual © 2008 TLS Corporation. Published by Telos Systems/TLS Corporation. All rights reserved. Trademarks Telos Systems, the Telos logo, iPort, Livewire, Zephyr, ZephyrExpress, Zephyr Xstream, Nx12, TWOx12, Series 2101, Desktop Director, and Status Symbols are trademarks of TLS Corporation. All other trade- marks are the property of their respective holders. Notice All versions, claims of compatibility, trademarks, etc. of hardware and software products not made by Telos mentione
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Telos Systems USA 2101 Superior Avenue Cleveland, OH 44114 USA Telos Europe Johannisstraße 6 85354 Freising Germany Notices and Cautions This symbol, wherever it appears, alerts you to the presence of uninsulated, dangerous voltage inside the enclosure – voltage which may be sufficient to constitute a risk of shock. This symbol, wherever it appears, alerts you to important operating and maintenance instructions. read the manual. CAUTION: THE INSTALLATION AND SERVICE INSTRUCTIONS IN THIS MANUAL
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iv | Table of Contents We support you... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i 1 Introduction 1 Welcome to the iPort . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Features & Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Telos iPor T Manual | v SHOUTcast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Stream and Track Names . . . . . . . . . . . . . . . . . . . . . . . . . 30 Using a PC Player to Listen . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Hardware Players . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 MPEG License & Music Copyright . . . . . . .
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| 1 1 introduction Welcome to the iPort The Telos iPort is designed to help you achieve one of two objectives: ♦ Connect two Livewire-equipped facilities over a wide-area network, such that they appear to be local to each other. As many as 8 bi-directional channels are possible. In the simplest case, a single Livewire 8x8 interface Node and an iPort at each end provide 8x bi-directional codec links over an IP channel. ♦ Encode streams for Internet transmission to the public or for interna
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2 | section 1 loss is routine such as on the public Internet. There are configurable buffers to accommodate jitter, but longer buffer lengths add to delay. When you need to use non-QoS-controlled links, the Telos Z/IP family products are a better choice because they have adaptive mechanisms to deal with network problems. Features & Benefits The iPort is an innovative approach to providing MPEG codec functionality, made possible by the use of Livewire for its audio interface. Its features incl
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in Tro Du CTion | 3 The jack labeled 100/1000 is for the compressed streams, which is normally connected to a Wide Area Network link. It automatically adapts its rate to the port at the other end of the connection. For both jacks, the iPort’s Ethernet mode is set permanently to AUTO, so the other end must be, as well. (Problems can result if the other end is set to 100BT or 1000BT.) Usually, these jacks are connected to an Ethernet switch or an IP router and a PC is connected to a spare ja
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4 | section 1 factory defaults. Firmware setup. Restart. ♦ Diagnostics - View and capture system diagnostics info. The first step is going to be to configure the network parameters, so click on the Network link to open that page. Host Name This is the Linux host name that is used for device identification, such as, for example, when system logs are being sent to an external machine. These should be unique for each device in your network, so if you have more than one iPort, you will want to ch
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in Tro Du CTion | 5 However, if you do want only one connection to the iPort, then it’s OK to enter the same subnet for both fields. In this case, both the Livewire and codec streams will be on whichever single physical port you con- nect. The other should remain unconnected. Changing Passcodes This may be done on the System page. You can do this for both the front panel LCD/knob and Web access. Default for the LCD/knob is , meaning no password is needed. Default for the Web interface
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6 | section 1 To install new firmware, the first step is to download it to your PC. You might receive this via email from our support department, or you might find it on our website. After it is on your PC, browse to locate it, then click the Upload button to install it into the iPort. It will be stored the in bank checked in the ‘radio button’ above. For a unit in active use, you would store this in the bank that is not currently active. When the firmware has been successfully uploaded, cli
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| 7 2 livewire-W an link Livewire is a professional-grade IP Audio system, used over controlled local area networks. As a modern replacement for older analog or TDM digital systems, it offers very low delay and high audio fidelity. There are a wide range of products made for broadcast studio facilities that take advantage of Livewire: interface nodes for analog and AES3 audio, routers, mixing consoles, dynamics processors, ISDN and POTS telephone interfaces, delay units, satellite encod
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8 | section 2 equipment, you’d have a rack full of codec boxes, expensive router interface cards, and a plethora of cables. If you don’t already have a Livewire installation, no problem. You can use an audio interface Node, or two, and still benefit from the iPort’s simplicity and low cost. Getting Started A simple installation would look like the one in the block diagram above. In this case, a LW Node is providing the audio interface. Both analog and AES3 Nodes are available. Since each Nod
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l iVeWire-W an l ink | 9 Network Click on the Network link, and you will see this page: Host Name Enter a convenient name, if you want to change from the Zephyr default. (Advanced note: This is the Linux host name, used for network identification.) Livewire port If you have not already done so via the front panel LCD interface, enter the IP number you would like the iPort to have within your LW network. Enter the netmask value used in your system. No gateway is needed for the LW port since
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10 | section 2 Codec configuration Global Options Confirm that the factory default is set for 8 encoder / decoder channels. (The 16-channel encode-only option is used for streaming applications.) Codec and Channel Settings Usually, the first step will be to click the Options button for the channel you are configur- ing to set the details of the codec and protocol parameters. Having done so, you will see this this page: Encoder Set the codec type, bitrate, and stereo/mono mode you want to use f
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l iVeWire-W an l ink | 11 Decoder The Buffering drop-down box lets you choose how much buffer is applied to the received streams. A lower value gives lower delay, but depends upon the network to have low jit- ter. There are a range of values, so that you can experiment to find the optimum for your network conditions. The usual procedure is to try successively lower values until you hear audio interruptions. Then back off to a higher value with a bit of margin. The Protocol type is set to cor
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12 | section 2 selected on the Diagnostics page. These are mostly intended for our engineers. Should you have a problem that might be diagnosable via these logs, our support people will ask you to download and email us the files. FAQs Do all the channels need to go to a single unit at the other end? No. Each of the iPort’s channels are independent and may be used individually. Simply enter the IP numbers/ports for the unit you want to use at the other end. Can I use the iPort with Telos Z/IP
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l iVeWire-W an l ink | 13 ♦ AAC-LD has the lowest delay of the codecs, so is the choice when inter-activity is important, such as for intercoms. It has about 30% less efficiency than AAC, which means that for equal quality, you would need to use 30% higher bitrate. Its packet- loss concealment is good, but not as good as AAC. ♦ MP3 (MPEG layer 3) is not as efficient as AAC and has the worst packet-loss concealment. It is included mostly for compatibility with codecs and software players th
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