Telos Zephyr iPort - Manual (Page 8)

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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 include:
High density. 8x8 codec or 16 encode-only channels in a 2U box.
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Low cost. We’ve built the iPort on a single industrial PC motherboard rather than on the
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usual multiple DSP cards in a frame approach. Together with the Livewire-only audio
interface, we are able to manufacture the iPort at a fraction of the cost of the traditional way.
Direct Livewire connectivity. For people who already have facilities based on Livewire IP
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audio, there is no need for any interface or conversion. The iPort simply plugs into a port on
the Ethernet switch and all encode/decode channels are connected with 24-bit/48kHz quality.
Web configuration. Can be done with a PC located anywhere on the network.
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Full range of state-of-the-art MPEG codecs. AAC-LD for delay-sensitive applications,
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AAC-HE and AAC-HEv2 for low bitrate requirements. Standard AAC for best quality and
resilience to packet loss at higher bitrates.
Excellent quality and high-density streaming encoder with the advantage of the Livewire IP
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Audio network interface.
Installation
The iPort mounts in a 2RU high space in a standard 19” rack. The unit will operate in any
environment where the stirred air temperature around the unit is between 0 to 40 degrees
Celsius (32 to 104 degrees Fahrenheit) with a relative humidly of 0 to 98% (non-condensing).
There are redundant ventilation fans on the rear panel which exhaust air that is taken in from
openings in the box sides. All of these need to remain unobstructed.
The fan speed is controlled automatically, and is normally quite slow. If the fans are running at
high speed, or if there is an over-temperature indication on the front panel LCD, a problem
with air flow or high ambient temperature is probably to blame.
Connections
All audio input/output and control is via two rear-panel Ethernet Rj-45 jacks. The jack labeled
Livewire is for connection of studio-side audio.