Two-way communication is a form of transmission in which both parties involved transmit information. Two-Way communication has also been referred to as interpersonal communication. Common forms of two-way communication are:
- Amateur Radio, CB or FRS radio contacts.
- Chatrooms and Instant Messaging.
- Computer networks. See back-channel.
- In-person communication.
- Telephone conversations.
A cycle of communication and two-way communication are actually two different things. If we examine closely the anatomy of communication – the actual structure and parts – we will discover that a cycle of communication is not a two-way communication in its entirety. Meaning, two way communication is not as simple as one may infer. One can improve two-way or interpersonal communication by focusing on the eyes of the person speaking, making eye contact, watching body language, responding appropriately with comments, questions, and paraphrasing, and summarizing to confirm main points and an accurate understanding.
Two-way communication involves feedback from the receiver to the sender. This allows the sender to know the message was received accurately by the receiver. This chart demonstrates two-way communication and feedback.
[Sender] <--------- | \ [Encoding] \ | | [Channel] [Feedback] | | [Decoding] / | / [Receiver]---------->
Amateur Radio, Citizen Band Radio, and Family Radio Service
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. Citizen 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. Chat Rooms are very similar, only they are messages to a group of people. Chat rooms are often public; meaning that you can send a message and anyone can freely join the “room” and view the message as well as respond.
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.
The telephone is a device that is relatively easy to understand and use. In fact, the telephone connections used today have remained remarkably unchanged compared to those used almost a century ago. In addition, your connection to the phone company is rather straightforward as well. The telephone makes it easy to connect instantly with others from all over the world, making it simple to have a two-way conversation with a neighbor or with someone many miles away. Phones have undergone some changes over the years. Today, for example, phones use electronic switches instead of operators. The switch uses a dial tone so that when you pick up the phone you are aware that both the switch and the phone are functioning properly. 
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. 
- "Improving Interpersonal Communication" (PDF). University of Texas Medical Branch.
- "What Is Amateur Radio?". The National Association for Amateur Radio. Retrieved 20 March 2014.
- "Citizens Band (CB)". FCC Encyclopedia. Retrieved 20 March 2014.
- "Family Radio Service (FRS)". FCC Encyclopedia. Retrieved 20 March 2014.
- Tyson, Jeff. "How Stuff Works- Instant Messaging". Discovery. Retrieved 2014-03-19.
- Roos, Dave. "How Stuff Works- Chat Rooms". Discovery. Retrieved 2014-03-19.
- "The Power of In-Person Communication". Cisco. Retrieved 2014-03-15.
- Brain, Marshall. "How Stuff Works- How Telephones Work". HowStuffWorks,LLC. Retrieved 2014-03-19.
- Mitchell, Bradley. "How Computer Networks Work- Introduction to Interconnects". About.com. Retrieved 2014-03-19.
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