VoIP (Voice over Internet Protocol) is an IP telephony term for a set of facilities used to manage the delivery of voice information over the Internet. VoIP involves sending voice information in digital form in discrete packets called SIP(Session Initiation Protocol, a signaling protocol, widely used for controlling multimedia communication sessions such as voice and video calls / conferences over Internet Protocol (IP)). rather than by using the traditional circuit-committed protocols of the public switched telephone network (PSTN). A major advantage of VoIP and Internet telephony is that it avoids the tolls charged by ordinary telephone service. VoIP has become very popular means of communication nowadays, given the advantages it possesses. It is too fine-tuning and is gaining popularity day by day and one day replace the traditional phone everything.
VoIP gives the abilty to go hosted on highly expensive PBX with many advantages like;
• Enjoy mobility and flexibility of operations with multiple geographic and non-geographic numbers for global operations.
• Plug-and-play service modules enable all types of deployment to deploy dramatic upscaling of operations in a matter of hours.
• Hosted solutions enable customers to fully utilize a full-blown infrastructure by employing micro-level, incremental, pay-per-use investment model. 123+
• Enterprises with multiple points of geographic presence can utilize managed business services to have inter-office connections at no cost.
• Enjoy International calling at nominal investments when compared with conventional solutions.
• Do away with the need to maintain leased circuits between the offices & to maintain expensive legacy PABX systems.
• Ability to connect corporate offices spread over multiple geographic locations to work as a cohesive unit with our hosted solution.
• Value added features for corporate businesses, especially contact centers, like voice mail, call forwarding and call transfer between various branches.
• Seamless and uniform VoIP termination for all offices, whether local or international.
Saturday, October 3, 2009
Monday, July 20, 2009
Master Antenna Television System ( MATV )
What is a Master Antenna System?
MATV stands for Master Antenna Television. It is the means by which many apartment houses1 hotels, schools and other multi-unit buildings distribute TV and FM signals to a number of receivers. In order to accomplish this without a loss of signal quality, these systems must be carefully planned and engineered through the effective use of MATV equipment and techniques.
An MATV system is basically a network of cables and specially designed components that process and amplify TV and FM signals and distribute them from one central location . If there were 100 TV sets in a building, it would be extremely expensive to Install and maintain l00 separate antennas. Not only would It be unsightly, but reception would suffer because that many antennas would interact with each other, causing interference problems.
The MATV system concept can be separated into two divisions: the Head End and the Distribution System
The Head End normally consists of an antenna Installation to receive the desired signals to, processing equipment to filter the signals and remove interference, and a distribution amplifier to amplify the signals to the level required to provide an adequate signal to every receiver in the system. Antenna amplifiers, traps, filters, antenna mixing units, and UHF converters are among the equipment used in t~is portion of the system.
A welt-designed Distribution System is necessary to guarantee that an adequate signal will be delivered to every receiver. It should provide a clean signal to the sets by isolating each receiver from the system and by delivering the proper amount of signal to each set. This portion of the system consists of trunk lines, splitters, feeder lines, and tapoffs. Some of the other equipment used includes tine taps, variable isolation wall taps, coaxial cable, and band separators.
It is important to design your distribution system first. Usually, the requirements of the distribution system will determine the type and size of the amplifier that will be necessary at the head end. The actual layout of the system, of course, will depend upon the dimensions and requirements of the building in which it Is installed.
MATV stands for Master Antenna Television. It is the means by which many apartment houses1 hotels, schools and other multi-unit buildings distribute TV and FM signals to a number of receivers. In order to accomplish this without a loss of signal quality, these systems must be carefully planned and engineered through the effective use of MATV equipment and techniques.
An MATV system is basically a network of cables and specially designed components that process and amplify TV and FM signals and distribute them from one central location . If there were 100 TV sets in a building, it would be extremely expensive to Install and maintain l00 separate antennas. Not only would It be unsightly, but reception would suffer because that many antennas would interact with each other, causing interference problems.
The MATV system concept can be separated into two divisions: the Head End and the Distribution System
The Head End normally consists of an antenna Installation to receive the desired signals to, processing equipment to filter the signals and remove interference, and a distribution amplifier to amplify the signals to the level required to provide an adequate signal to every receiver in the system. Antenna amplifiers, traps, filters, antenna mixing units, and UHF converters are among the equipment used in t~is portion of the system.
A welt-designed Distribution System is necessary to guarantee that an adequate signal will be delivered to every receiver. It should provide a clean signal to the sets by isolating each receiver from the system and by delivering the proper amount of signal to each set. This portion of the system consists of trunk lines, splitters, feeder lines, and tapoffs. Some of the other equipment used includes tine taps, variable isolation wall taps, coaxial cable, and band separators.
It is important to design your distribution system first. Usually, the requirements of the distribution system will determine the type and size of the amplifier that will be necessary at the head end. The actual layout of the system, of course, will depend upon the dimensions and requirements of the building in which it Is installed.
Tuesday, January 27, 2009
Amplifier
Peavey CS800S is an 800 watt power amplifier
· The amplifier receives the combined or mixed signal from the mixer.
· The amplifier is the last component in the sound system before the speaker. Generally, the sound signal progresses through the sound system as follows:
o Microphone or Instrument
o Mixer
o Compressor (optional)
o 31-Band Graphic Equalizer (or parametric equalizer)
o Digital Delay (only for remote speakers that must be time-aligned with the main speakers)
o Cross-Over (only in the case of bi-amped or tri-amped speaker systems or a sub-woofer)
o Amplifier
o Speaker(s)
· The amplifier supplies the power to drive the speakers.
· Most speaker systems, especially lower power speakers only require a single amplifier. However, some speaker systems are designed to work bi-amped or tri-amped. In the case of a bi-amped system, two amplifiers are needed, one for low frequency sounds and one for high frequency sounds. In the case of tri-amped, three amplifiers are needed for low, midrange, and high sounds. If a sub-woofer is used for very low sounds, another amplifier is needed for it.
· Separate amplifiers are needed for the Main System, remote speakers (if required), and the Monitor System.
· When multiple monitor mixes are used, each mix requires its own amplifier.
· In order for an amplifier to make the sound twice as loud, it must supply four times as much power. For example, it takes a 400 watt amplifier to be twice as loud as a 100 watt amplifier.
· Always use an amplifier capable of supplying more power than you need. Distortion increases dramatically when an amplifier is operated at its maximum power. Having plenty of "head room" or reserve power reduces the chance of distortion.
· It is important that an amplifier have very low background noise. Even a small amount of "hiss" can be very objectionable.
· The power rating of the amplifier and the speakers must be similar to reduce the chance of damaging the speakers.
· The amplifier receives the combined or mixed signal from the mixer.
· The amplifier is the last component in the sound system before the speaker. Generally, the sound signal progresses through the sound system as follows:
o Microphone or Instrument
o Mixer
o Compressor (optional)
o 31-Band Graphic Equalizer (or parametric equalizer)
o Digital Delay (only for remote speakers that must be time-aligned with the main speakers)
o Cross-Over (only in the case of bi-amped or tri-amped speaker systems or a sub-woofer)
o Amplifier
o Speaker(s)
· The amplifier supplies the power to drive the speakers.
· Most speaker systems, especially lower power speakers only require a single amplifier. However, some speaker systems are designed to work bi-amped or tri-amped. In the case of a bi-amped system, two amplifiers are needed, one for low frequency sounds and one for high frequency sounds. In the case of tri-amped, three amplifiers are needed for low, midrange, and high sounds. If a sub-woofer is used for very low sounds, another amplifier is needed for it.
· Separate amplifiers are needed for the Main System, remote speakers (if required), and the Monitor System.
· When multiple monitor mixes are used, each mix requires its own amplifier.
· In order for an amplifier to make the sound twice as loud, it must supply four times as much power. For example, it takes a 400 watt amplifier to be twice as loud as a 100 watt amplifier.
· Always use an amplifier capable of supplying more power than you need. Distortion increases dramatically when an amplifier is operated at its maximum power. Having plenty of "head room" or reserve power reduces the chance of distortion.
· It is important that an amplifier have very low background noise. Even a small amount of "hiss" can be very objectionable.
· The power rating of the amplifier and the speakers must be similar to reduce the chance of damaging the speakers.
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