What are benefits of instant messaging?

Instant messaging comes with both risks and benefits. Here we focus up on its benefits.

Benefits of Instant Messaging

1. IM serves to be of great advantage in the environments that are geographically dispersed. The major benefit here is that it cut downs on the cost of expensive phone calls.
2. The communication channels can be augmented with the help of instant messaging. This will become clear from the following: suppose there is a conversation going between an external client and the team members can converse within themselves using IM for clarification of some points or plotting a strategy. Here, the IM is said to serve as a back channel.
3. IM serves as an efficient tool for clearing up the clutter on desktop and lets you respond immediately. Most of the business processes are time sensitive: problem resolution, crisis management, customer service etc. to name a few. IM is the solution for all these processes.
4. IM serves well in case of an emergency. The critical information can be rapidly disseminated to the whole company or individuals in cases such as that of health issues. Natural catastrophes, schedule changes, or network outages etc. most of the times, the network of IM services works well when most of other e – mail and phone networks are down.
5. A number of work groups can be linked through IM. Thus, it acts as a bonding between the two groups. The productivity of the ad-hoc contacts can be increased by enabling them to be quickly added to some work group.
6. IM services can also be used for routing the IMs to cell phones through the IM – to – SMS (short messaging service) gateway services. An example of such a service is find – me service.
7. Through IM services people have a quick reach to the experts if they want to survey multiple consultants or to have an instant consultation.
8. IM is a sort of self–service. People can place queries to the human resource virtual agents via person to machine IM services for obtaining information regarding enrollments or benefits. This also provides the staff with access to the data and speeds up the business processes.

More about Intant Messaging

- IM is one of the few small things that are a must for the effective communication 

- However, IM is embraced as a useful utility at workplace by some owners of small businesses. 

- IM services have been used to completely replace the traditional methods of communications or to provide support them. 

- IM is also a real – time means for communication. 

- But the text records of the IM conversations are kept by the exchange just as in the case of e–mail messages.

- This lets the IM function as a quick conference call without having the employees leave their desks. 

- It acts as a powerful means for bringing all the people on a web page common to all.  

- IM is an effective tool for conducting group chat. 

- Nowadays, such IM platforms that allow for group text chatting. 

- Plus, they also allow you to save the chat history. 

- Team members that are at some off- site locations can be connected through IM. 

- Through IM it becomes easy to stay connected and archive files.

How Instant Messaging Works?

Instant Messaging or IM is a very popular trend among all these days. A number of instant messaging services today offer features such as web conferencing, voice over IP and other video calling features. With such features both the IM features and video calling abilities can be integrated. 

About Working of Instant Messaging

- Each IM service has its own client that may be either a browser based client or some separate piece of software.

- These clients typically work with their sole company but some are designed in such a way that they support other services also. 

- There are some other third party clients that can connect with a number of major IM services. 

- Few such examples are Miranda IM, Trillian, Adium and so on.

- The IM program installed on your system connects to the IM Company via internet. 

- Here the user’s identity is verified. This process is termed as authentication. 

- After verification, the information or the ‘messages’ can be start exchanging between the users. 

- This IM program installed on your system is called the IM client. 

- When you start it up, it connects to the IM server of its company. 

- To log in to the IM service, you need to have an user ID and password. 

- Once they are verified to be correct, you are logged in. You are connected to the IM network. 

- A list of your friends who are currently online will be displayed. Your list will be changing as per who all are signing in and out. 

- People might have set different IM status such as ‘online’, ‘offline’ or ‘busy’ etc. when you type a message to your friend and hit enter; this message reaches him after traveling from your IM client through the IM server to which it is connected.

- The messages you send reach directly to your friends. 

- A pop up IM window displays your message to them. 

- As the chat progresses further, the messages travel to and fro between the two clients with very less delay of time. 

- Consider sending a file to your friend. You attach the file to the text and press enter. 

- Then your IM client will place an inquiry at the IM server to know the status of your friend. 

- If your friend is connected to internet, a direct connection to his IM client is established.

- The reason for using a direct connection is that it is much faster and efficient rather than sending files through a number of intermediate servers in case of an indirect connection. 

- Also, using a direct connection saves on bandwidth. 

- Instant messages are quite small in size and messages of a whole month may sum up to only 1 megabyte that is quite a tiny amount of space.

- This also enables instant messaging services to work equally on slow as well as fast internet connections.

How Inter-operability is supported by Instant Messaging?

- An instant messaging service can support a number of simultaneous conversations. 

- These are small applications that can cater to only small business needs. 

- But for larger organizations more sophisticated applications are required that can work in cooperation. 

- The enterprise versions of these applications provide solution to these problems.

- Some examples of larger IM applications are:

1. XMPP
2. Lotus same time
3. Microsoft office communicator and so on.

- These applications can be integrated with the workflow systems.

- These applications are also known as EAI or enterprise application integration as per certain constraints such as data storage in a specified format. 

- Several attempts have been made for creating a unified standard. 

What is meant by Instant Messaging?

Almost everyone today is familiar with the term ‘Instant messaging’ or IM in short. 

- This is a type of communication that sustains over the internet and quickly transmits the text based messages between people (i.e., senders and receivers). 

- The basic purpose of IM is to provide “real time direct written language–based online chat”. 

- It does this through push mode and other shared clients between two or more people using personal communication devices (mobiles) and personal computers. 

- A network such as the internet is used for conveying the text message for the person it is intended for. 

- IM addresses two kinds of communications namely:

1. Point – to – point communications i.e., from one person to another one person.
2. Multicast communications i.e., from one sender to a number of receivers.

- Nowadays, much enhanced modes of communication have been introduced by advanced instant messaging services. 

- Some enhancements are inclusion of video chat, audio calling and hyperlinks to other media etc. 

- The umbrella term is the online chat under which the concept of IM falls. 

- The similarity between them is that they are text based, happens in real time and offer bi – directional flow of messages. 

- The only distinction is that the IM is based up on clients. 

- The connections between the known users are facilitated by these clients only through a contact list (also known as friend list or buddy list).

- On the other hand, chat works up on web – based applications that facilitate communication between multiple users.

- A number of communication technologies that facilitates text based communication are combined together to provide the service of instant messaging. 

- The biggest feature of the IM – chats is that they take place in real time just like a phone call. 

- IM is different from the other web services such e–mail in the sense that users here perceive the “quasi – synchronicity of the communications”. 

- In IM, you can message only those people who are online at that time. 

- However, there exist some systems that allow you to message offline people, thus drawing some similarity between e–mail and IM.

- IM is cheap and effective means for efficient communication. 

- It allows immediate receipt of the message and also enables us to reply back immediately. 

- However, it is not necessary that the transaction control might support the IM. 

- In some cases there are additional features that make IM more interesting as mentioned below:

1. Enabling users to see each other via web cam.
2. Using headphones and microphones and talk for free over internet.
3. File transfers
4. Saving a text conversation for future reference.

- Instant messaging came much before the internet and first appeared on systems such as multics (multiplexed information and computing service) and CTSS or compatible time sharing system which are multi – user systems. 

- Some of the IM services such as ytalk, talk, ntalk and so on, peer – to – peer protocol.

- Some other examples of early IM services are:

1. Zephyr notification service
2. Bulletin board system or BBS
3. Freelancin round table
4. Compuserve CB simulator: this was the first dedicated online chat service

- Real time text was also a feature of these early instant messaging services.   

- AOL’s real time IM implements the modern real time text feature as an optional feature. 

- Video calling features such as web conferencing services can integrate both IM abilities and video calling.

What is Dynamic synchronous transfer mode (DTM)?

Dynamic synchronous transfer mode or the DTM is a technology developed for optical networking. The ETSI (i.e., the European telecommunications standards institute) standardized this technology in the year of 2001 marked with the following beginning specification ‘ETSI ES 201 803 – 1’. 

This is a circuit switching network technology that doubles as a time division multiplexing technology too. Actually, this technology is built up on a combination of the switching and transport.

This technology guarantees to provide QoS or quality of service for services that are involved with the streaming of videos. 

However, it might be used for packet – based services also. It is marketed for the following:

1. Professional media networks
2. Mobile TV networks
3. DTT or digital terrestrial television networks
4. Content delivery networks
5. Consumer oriented networks (for example, triple play)

What is Switching?

- Switching of the channels is specified by DTM. 

- This is what that makes it different from the other transmission techniques that we have, for example, SONET (synchronous optical networking), SDH (synchronous digital hierarchy) and so on. 

- End to end provisioning is done for the DTM channel over a network with general topology through the use of control signaling.

- DTM therefore represents a circuit switched system. 

- The switches are nothing but time space switches that guarantee the QoS property. 

- The allocation of the resources is done physically for each channel in the switch. 

- This is quite contrary to the switches that are based up on packets or cells. 

- In those kind of switches there is always a competition for resources between the packets and cells. 

- Such a competition leads to delaying and discarding of the packets and cells. - Other methods offer a shared resource allocation mechanism that draws a limit for the packet and cell switches regarding their utilization of the network in such way that the QoS is maintained at a certain level. 

- But DTM does not follow this shared allocation mechanism rather it implies that a network can be loaded up to full limit theoretically and still can guarantee the QoS. 

- Thus, here real utilization is more like a question of adaptation of the network topology as well as its link capacities considering the actual traffic matrix.

- Packet and cell based switching technologies are more suited to statistical multiplexing.

- It means whenever a packet streams in a router come at an outgoing link that is common to all of them, buffering is carried out until the resources are free on that particular link.

- In this way, it becomes possible to make use of the outgoing link to the maximum degree possible without causing many delays. 

- This also proves fitting for the best effort traffic. 

- But there are certain QoS requirements of the streaming media that cannot be ignored. 

- Streaming traffic is by nature not statistical and therefore is better maintained by end to end resource allocation.

- This category is applicable for audio and video services.

- This is not exclusive of the IP traffic gained via guaranteed QoS transport if majority of the content is audio and video. 

- Some other technologies such as that of IP and Ethernet were also adopted for the same purpose. 

- Multi protocol label switching or MPLS can be applied to the carriage network for improving the reliability as well as determinism that is required by most of the streaming media. 

- This technology is applied along with the techniques such as the forward error correction.

- Ethernet has been made supportive for audio and video transmission by improvement in technologies such as the provider backbone bridge traffic engineering. 

- The development of dynamic synchronous transfer mode took place at the royal institute of technology.