SMS (Short Message Service), commonly referred to as “text messaging,” is a service for sending short messages of up to 160 characters (224 characters if using a 5-bit mode) to mobile devices, including cellular phones, smartphones and PDAs.
SMS messages do not require the mobile phone to be active and within range and will be held for a number of days until the phone is active and within range. SMS messages are transmitted within the same cell or to anyone with roaming service capability. They can also be sent to digital phones in a number of other ways, including:
- From one digital phone to another
- From Web-based applications within a Web browser
- From instant messaging clients like ICQ
- From VoIP applications like Skype ‘
- Enhanced messaging service (EMS), an adaptation of SMS that allows users to send and receive ringtones and operator logos, as well as combinations of simple media to and from EMS-compliant handsets.
Users can send messages from a computer via an SMS gateway. SMS gateways are Web sites that allow users to send messages to people within the cell served by that gateway. They also serve as international gateways for users with roaming capability.
1. Chat:
It is online communication between two users through a computer. Once a chat has been initiated, either user can enter text by typing on the keyboard and the entered text will appear on the other user’s monitor. Most networks and online services offer a chat feature.
2. Video Conferencing:
A video-conference (or Video Conference) is a live video connection between people in separate locations for the purpose of communication or interaction. Video-conferencing allows people to communicate visually from anywhere in the world.
There are three main types of video conference solutions for businesses: point-to-point, multipoint and streaming.
- Point-to-point (sometimes referred to as single call) is a direct connection between two locations. It’s like a telephone call, just with video.
- Multipoint lets three or more people or locations take part in the same video conference. Multiple parties can meet through HD video in a meeting room, from a desktop at work, from a home computer, or even over a smartphone or tablet when on the road.
- Streaming connects your video conference to others who may choose to view the meeting on a remote computer or mobile device using software instead of hardware.
