Multicast routing concentrates on the delivery of information to various destinations without transmission of multiple copies or link. This process is performed for the intention of resource optimization. Common applications include broadcasting and audio visual conferencing, e-commerce system and negotiation, replicated database, online games, and querying. These applications are delay sensitive types that require high bandwidth. Multicasting protocols are used for shortest paths from source to destination in multi cast group. Shortest path tree is the design problem for the construction of tree. These days, the protocols design is based on core selection for the optimization of metrics. It is helpful for the improvement of protocol scalability in quality assurance sensitive applications.

Multicast routing protocols are evolved in core based approach for better performance of its operations in distributed networks. The structure and location of routing tree is dominant determinant on the performance of protocol in multicast applications. In group applications that involve instant interaction in participations including audio visual conferencing, the protocol becomes sensitive for multipoint communication under multiple metrics to fulfill the demands of quality of services. This process of tree construction seems crucial for protocols operations because lack of coreselection can degrade the efficiency of protocol.

Multicasting protocol enables a collection of multiple routers to construct distribution trees. There is list of five multicast protocols that help you to comprehend their functions.

DVMRP- The first multicast routing protocols are hampered with multiple limitations that make this method unattractive for wide range of application. DVMRP is a dense mode protocol that uses prune and implicit method to deliver traffic. DVRMP make use source based distribution trees in form of S G.

MOSPF-It extends OSPF for multicasting in dense mode. MOSFP shows explicit join method to flood entire domain in multicast traffic from source to destination. It likes DVMRP uses source destination trees in form of S.G.

PIM-DM-It operates in dense mode but it is different from PIM spare mode. Unlike MOSPF and DVRMP, PIM-DM helps router to use unicast routing protocol and executes the process of RPF checks with the use of unicast routing table. It contains PIM-DM in an implicit join message that helps routers to use prune method and flood to deliver traffic anywhere. PIM-DIM also uses source based distribution tress as other multicasting protocols do.

PIM-SM- It helps routers to use unitcast routing table and performs the checks of RPF during unicast table. It also contains explicit message to determine the location of receivers and send messages to their neighbors. It uses RP routers in form of initial source of multicast group traffic and construct trees in form of G. PIM-SM also moves to source based tree if routing path is shorter than RP for multicast traffic group.

CBT- it contains all the characteristics of PIM-SM like explicit join, sparse mode and shared G trees but it is efficient to find sourced than PIM-SM.

CTI / Telephony Convergence

Computer telephony integration is an effective means of telephony and computer talk to each other that increases the coverage of data, voice and telephony. It includes integration of email, web, fax and voice transfer with computer system. CTI uses for computerized services in call centres to resolve the problem of worldwide customers.

CTI Call Management

There is wide use of CTI applications in call management roles.

Interactive voice response system is used to route calls of customers via the selection of keypad on phone. For example, when you make call to any customer service helpline, they request you to follow instructions like press 1 for sales and 2 for marketing.

It identifies call information like number of dialed and anger display with information of caller.

Computer controlled or automatic dialing in which you can use predictive dialing to maximize the efficiency of telemarketing agent.

• It displays call queuing details to the supervisor of call centre that handles improvement of call handling agents.
• Control various aspects of call like hanging up, answering and teleconferencing.
• It co-ordinates data transfer role across the network of telephone.
• Formation of reports on the performance of agent and call handling
• Real time monitoring of performance and feedback for agents

Efficiency via CTI Automation

CTI enables business owners to improve their customer service, and other staff issues. Pc based telephony system works via call routing and intelligent dialing system. CTI automated transactions and pre-record information permits inbound call centres to offload the volume of their call with equivalent savings. It helps to perform tasks in half time that saves time of customers and agents. It enhances the caller satisfaction as his problem is solved in half time and customer can seek assistance 24/7 throughout week.

Agent Screen Population

Dialed number identification allows CTI application to inhabit the agent screen with the display of pertinent data that is based on originating or caller number. It delivers both agent and caller information that caller wants to get like product details. A CTI application gets relevant information from database and shows it on the screen of agent.

This telephone system has re-enfranchised to fulfill the requirements of organizations in this digital age. It has become the part of IT infrastructure that delivers real time value to customers and organizations. End users can easily get response of their inquiries efficiently. Companies get flexibility by adding support of new office or home offices.  It works on the creation of virtual contact centres where customers can get helpline services anytime when they need. It also reduces software based solution, and maintenance charges. There is huge growth in this area where companies’ investments can gain profit in channels of interactions. It makes differentiation between services of customer care and wins the trust and satisfaction of customers.  CTI is the effective solutions for business firms as it helps them to increase output of sale easily.