Two-way communication

Amateur radio is used for entertainment and as a hobby by many groups of people. These individuals label themselves as “hams”. Amateur radios are also known to be a reliable means of communication when all other forms are not operating. In times of disaster, communication through Amateur radios has led to lives being saved. Citizens band radio (CB radio) can be used by anyone who is not a member of a foreign government. It is meant for short-range communication using devices that mimic walkie-talkies. Family Radio Service (FRS) is also meant for short-range communication using devices that mimic walkie-talkies. Like the CB radio, the FRS does not require a license and can be used by anyone who is not a member of a foreign government. == Chat rooms and instant messaging ==

Instant messaging became wildly popular around 1996 and spread even more with AOL in 1997. The concept behind IM is that it is a way of quick communication between two people due to tools such as knowing when messages are seen or knowing when others are online. Many social media sites have integrated IM into their sites as ways to spread communication. Many social media sites have direct message or Private message. Called either PM or DM, where you can privately text one another from your social media account. Much different from Chat rooms. Chat rooms are messages to a group of people. Chat rooms are often public, meaning that you are able to send a message and anyone can freely join the “room” and view the message as well as respond. == In-person communication ==

As it relates to business, 75% of people believe in-person communication is critical. In-person interaction is useful for resolving problems more efficiently, generating long-term relationships, and resolving a problem or creating an opportunity quickly. 4 out of 6 of the most important attributes of building a relationship cannot be achieved without the power of in-person, which requires a rich communication environment. Business executives believe in-person collaboration is critical for more than 50 percent of key business strategic and tactical business processes when engaging with colleagues, customers, or partners. == Telephone conversations ==

Telephones have gone under many changes throughout the years. For example, today's telephones use electronic switches instead of operators. The switch uses a dial tone so that when one picks up the phone you are aware that both the switch and the phone are functioning properly. Land-line telephones have gradually seen decreasing commonality and usage, owing to the increasing ubiquity of personal smart phones globally obviating the need to use dedicated phones to maintain telephone communications. Another major change is that most people now use their mobile devices to make calls and communicate with others instead of landline telephones. == Computer networks ==

Computer networks are used to have two-way communication by having computers exchange data. Ways that this is possible is wired interconnects and wireless interconnects. Types of wired interconnects are Ethernets and fiber optic cables. Ethernets connect local devices through Ethernet cables. Fiber runs underground for long distances and is the main source of Internet in most homes and businesses. Types of wireless interconnects include Wi-Fi and Bluetooth. The problem with these networks is that they don't have unlimited connection span. To expand the reach there are wide area interconnects such as satellite and cellular networks. Also, there are long-distance interconnects which need backhaul to move the data back and forth and last mile to connect the provider to the network. == References ==