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What is Voiceband?
In electronics, voiceband
means the typical human hearing frequency range that is from 20 Hz to 20 kHz. In telephony, it means the frequency range normally transmitted by a telephone line, generally about 200-3600 Hz. Frequency-division multiplexing in telephony normally uses 4 kHz carrier spacing. The roll-off rate, or rate at which the amplitude of a signal drops off near the upper and lower limits can vary with the design of the band-pass filters.
The question of frequency spacing was addressed at an international meeting in the 1930s. Germany and Britain favored 2 kHz spacing, while the Netherlands and some other countries preferred 6 kHz. The question was compromised at the American position, which was the 4 kHz spacing that remained standard and also fixed the standard PCM sample rate at 8 kHz, which in turn defines what "voiceband" means for this purpose. The abandonment of in-band signaling in the late 20th century made available a larger voiceband for modems and voices.
Exede Frequely Asked Questions
Exede Internet availabily was based on: Exede internet is available in almost all areas of United States please call us, your local authorized dealer in High Speed Satellite Internet to talk with an internet specialist today. Exede Satellite Internet Requires a clear view of the southern sky.
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Service not available in all areas of High Speed Satellite Internet United States. Please call to check for service availability. Minimum 24 month commitment term. One-time setup fee of $149.99 (currently on special for $49.99) and $9.99/month equipment lease apply (or pre-pay a 24-month lease and save almost $40). Actual speeds will vary. Non-standard installations may result in additional charge. Equipment must be returned upon cancellation of service, otherwise unreturned equipment fees apply. Taxes and monthly service fees apply. Prices subject to change. All offers valid for a limited time and may be changed or withdrawn at any time. Requires a clear view of the southern sky. Use of the Exede service is subject to data transmission limits measured on a monthly basis as described in the Data Allowance Policy. For complete details and the Data Allowance Policy, visit www.exede.com. Exede Satellite Internet is a service mark of ViaSat, Inc.
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