It Infrastructure Answers
1.13
Convergence – In the telecommunications industry, convergence refers to the integration of voice, internet, broadcasting, and other telephony servers into one mega-industry from their traditionally separate industries. Companies such as Telstra are an excellent example of this, as Telstra now offers an abundance of products such as, Fixed Phone, Mobile Phone, Dialup Internet, Broadband Internet, Wireless Internet, TV, Music, Tickets, and more. Incentives are given to “bundle” services with the one particular provider, which can have advantages and disadvantages.
Unified Communications – This term refers to the integration of video, voice, data and messaging into a software suite. A particular advantage of these suits is that they bring online (email, IM) and offline (PSTN voice, SMS) together into one place. Each of the communication methods are separated into different products, however they all operate in conjunction to bring an efficient communications solution to the end user.
2.3
A company’s telephone exchange digitizes telephone channels at 8000 smp/s, using 8 bits for quantization. This telephone exchange must transmit simultaneously 24 of these telephone channels over a communications link. a. What’s the required data rate?
8b/smp * 8,000smp/s = 64,000 bits per second (textbook p. 34)
64,000 * 24 = 1,536,000 bits per second OR 1.46484375 Mbits per second * = b. In order to provide answering-machine service, the telephone exchange can store 3-minute audio messages of the same quality as that of the telephone channels. How many megabytes of data storage space are needed to store each of these audio messages?
1.46484375 Mbit / 24 = 0.06103515625 Mbit / =
0.06103515625 Mbit / 8 = 0.00762939453125 megabytes / 8 =
3 minutes = 180 seconds
0.00762939453125 * 180 = 1.373291015625 Megabytes per 3-minute audio message * =
2.12
When examining X-rays, radiologist often deal with four to six images at a time. For a faithful difital representation
Convergence – In the telecommunications industry, convergence refers to the integration of voice, internet, broadcasting, and other telephony servers into one mega-industry from their traditionally separate industries. Companies such as Telstra are an excellent example of this, as Telstra now offers an abundance of products such as, Fixed Phone, Mobile Phone, Dialup Internet, Broadband Internet, Wireless Internet, TV, Music, Tickets, and more. Incentives are given to “bundle” services with the one particular provider, which can have advantages and disadvantages.
Unified Communications – This term refers to the integration of video, voice, data and messaging into a software suite. A particular advantage of these suits is that they bring online (email, IM) and offline (PSTN voice, SMS) together into one place. Each of the communication methods are separated into different products, however they all operate in conjunction to bring an efficient communications solution to the end user.
2.3
A company’s telephone exchange digitizes telephone channels at 8000 smp/s, using 8 bits for quantization. This telephone exchange must transmit simultaneously 24 of these telephone channels over a communications link. a. What’s the required data rate?
8b/smp * 8,000smp/s = 64,000 bits per second (textbook p. 34)
64,000 * 24 = 1,536,000 bits per second OR 1.46484375 Mbits per second * = b. In order to provide answering-machine service, the telephone exchange can store 3-minute audio messages of the same quality as that of the telephone channels. How many megabytes of data storage space are needed to store each of these audio messages?
1.46484375 Mbit / 24 = 0.06103515625 Mbit / =
0.06103515625 Mbit / 8 = 0.00762939453125 megabytes / 8 =
3 minutes = 180 seconds
0.00762939453125 * 180 = 1.373291015625 Megabytes per 3-minute audio message * =
2.12
When examining X-rays, radiologist often deal with four to six images at a time. For a faithful difital representation