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Physicalnetworking

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NT1310-Physical Networking
Unit 1 Assignment 1: Voice VS Data

1. A cell phone is a mobile phone which can make and receive calls over a radio link. It connects to a cellular network which allows it to connect to the public telephone network. It uses both voice and data networks.
2. A landline phone is a device that has a physical connection with a telecommunication network. One big advantage landlines hold over cell phones is clear reception. Landlines offer both voice and data usage via broadband.
3. SMS stands for short message services It is the text messaging service component of mobile communication systems, phones or the web. It is the most widely used data application. It is used on data networks.
4. A Fax is the telephonic transmission of printed text and images to a telephone number connected to a device. It uses both analog and digital signals. It operates over both voice and data networks, and is a big reason why there are still landlines.
5. A Pager, also known as a Beeper, is a wireless communication device that receives numeric or text messages. It can also receive and announce voice messages. There are one way pagers which can only receive messages, and two way pagers which can send messages. The Pager uses both voice and data networks.
6. VOIP, or voice over IP is technology which enables the delivery of voice communications and multimedia sessions. Over internet protocol networks, VOIP involves signaling, channel setup, digitization of analog voice signals, and encoding. This information is packetized and occurs as IP packets over a packet-switch network. This medium uses voice and data networks.
7. Skype is a VOIP service and instant messaging client. Skype allows users to communicate with each other using a microphone, web cam, and instant messaging over the internet. Phone calls can be placed to users on traditional telephone networks.

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