ngn services brbraitt

7/28/2019 Ngn Services Brbraitt

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NGN SERVICES

1.1 Introduction:NGN is a horizontally layered network as compared to the conventional vertically separated networks for

each service. The access, transport, control and service functions are separated into individual network layers. These

layers can be managed by different service providers. Thus third party service providers can develop and offerinnovative personalised services to the end users. NGN uses Internet Protocol (IP) based transport for all services

including voice thereby service providers CAPEX and OPEX are reduced. Figure 1 depicts various services

supported by NGN.

A brief description of various services provided in NGN is given below:

Voice Telephone Services: NGN supports all existing PSTN/ISDN/PLMN voice telephony services likeCall Forwarding, Call Waiting, 3-Way Calling, Calling number and name Identification Presentation,

Centrex services, various IN services and other value aided services.

Contentdelivery

services

VoiceTelephony

Services

Global

MobilityServices

Number

Portability

e-Commerce

&

m-Commerce

Remote

ControlServices

Information

Services

Call Center

Services

Internet

Services

Third Party/

OSA-based

services

VirtualPrivate

Networks

Public

NetworkComputing

Broad-

casting/

alerting

Multimedia

ServicesData

Services

Messaging

services

PresenceAnd general

notification

Push totalk over

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Multimedia Services: These services allow customers to converse with each other while displaying visualinformation. It is possible for multiple parties to interact each other using voice, video, picture and data.

Multimedia services include video conferencing, multimedia value added services, collaborative

computing, groupware, electronic white boarding etc. An electronic whiteboard is an application where

both parties can write and draw on the same picture for discussion during a multimedia call. This is useful

for remote teaching, technical discussion etc.

Data Services: Data services establish real-time connectivity between endpoints along with various datarelated value-added features (e.g., bandwidth-on-demand, connection reliability/resilient Switched Virtual

Connections (SVCs) and bandwidth management/call admission control). Data services include file

transfer, www, applications sharing interactivity etc.

Messaging Services: NGN supports both real time and non-real time messaging services for fixed andmobile networks. Some messaging services are designed as real time and others are non-real time

(mailbox) service where the messages are stored and delivery at a later time.

i) Unified Messaging: Unified Messaging facilitate the delivery of voice mail, email, fax mail etc. through

common interfaces. Through these interfaces, users can access, as well as can be notified of, various

message types (voice mail, email, fax mail, etc.), independent of the means of access (i.e., wireline or

mobile phone, computer, or wireless data device).

ii) Instant messaging (IM): Instant messaging (IM) is a form of real-time communication between two or

more people based on typed text. Instant messaging is supported across fixed and mobile networks. Thekey features of instant messaging are low latency, security, mobility, group management and message

filtering.

iii) Chat: This facilitates real-time communication by means of text between two terminal users who have

already logged on.

iv) MMS and SMS: This facilitates near real time communication by sending and receiving multimedia

messages or text messages. For example video greetings that can be sent using MMS.

Push to talk over NGN (PoN): 'Push' operation refers to service initiated data transmissions to members ofa group. Push-to-Talk, also referred to as PoC (Push-to-Talk over Cellular) is built around VoIP (Voice

over IP) technology. It is a wireless service that turns mobile phones into long-range walkie-talkies by

connecting to other phones without dialling. Instead of dialling, one can simply push a button and talk to

members of a group. The speech will be one-way-at-a-time instead of a two-way conversational mode. It

can be used for short-duration and high-urgency voice communications and keeps an always-on

connection between groups of frequently called mobile subscribers like family, colleagues, businessassociates etc. All members of the group can hear the speech from others. The listeners do not have to press

any button to hear the speech from others and it is always on.

Content delivery services: Content based services like music and video on demand, radio streaming,gaming, financial information distribution, professional and medical image distribution, electronic

publishing etc. can be provided to customers.

Global Mobility Services: In NGN environment phone and other devices user can travel from place toplace. Global Mobility Service provides global roaming and other location based services for all types of

wireless and wireline subscribers. Mobility can be for terminal, user and services. Terminal mobility is the

ability of a terminal to be moved to different access points.

Number Portability:Number Portability provides the end users to retain existing directory numbers whilemoving from one physical location to another or from one service provider to another.

Virtual Private Networks (VPNs): Voice VPNs improve the multiple location networking capabilities ofbusinesses by allowing large, geographically dispersed organizations to combine their existing private

networks with subsets of PSTN, thus providing subscribers with uniform dialing capabilities. Data VPNs

provide added security and networking features that allow customers to use a shared IP network as a VPN.

Broadcasting/ Multicast Services: These Services involve transmission of data to many userssimultaneously, allowing efficient use of bandwidth, like radio broadcast, TV broadcast. For example IPTV

(Internet Protocol Television) is used for delivering digital television services using the Internet Protocol


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(IP) using wireline as well as wireless broadband connections. The user terminals might be a PDA, Laptop,

mobile handset, TV etc.

Emergency Telecommunication Services: Emergency services are provided between citizen to authority,authority to authority and authority to citizen . Typical emergency services are Police/medical assistance ,

Disaster relief operations , Lawful intercept services etc.

e-Commerce & m- Commerce: These services allow consumers to purchase goods and serviceselectronically over the network. This includes processing the transactions, verifying payment information,

providing security and possibly trading (i.e. matching buyers and sellers who negotiate trades for goods

or services). Home banking, home shopping, Business-to-business applications (e.g. supply-chain

management and knowledge management applications) are also part of these services.

Remote control/tele-action services: These services are used for home applications control, telemetry,electronic voting, alarms etc. With the advent of in-home networking and intelligent appliances, these

services could monitor and control home security systems, energy systems, home entertainment systems,

and other home appliances. For example if some one is watching television and the doorbell rings, he can

use the TVs remote to get a view of the entrance to see whos there. Another example is monitoring the

house while away on a trip.

Information Services/ Information Brokering: This service is also called voice portal service. Theseservices include news, sport scores, weather, stock quotes, advertisement, directory enquiry service, cinema

ticket, motorway traffic status and information to consumers based on pre-specified criteria or on personalpreferences.

Call Center Services: A subscriber can make a call to a call center agent by clicking on a Web page orCPE. The call is routed to an appropriate agent, who could be located anywhere, even at home (i.e., virtual

call centers). Voice calls and e-mail messages can be queued uniformly for the agents. Agents would have

electronic access to customer, catalog, stock, and ordering information, which could be transmitted back

and forth between the customer and the agent.

Session Controller-based Internet services: It provides access to public Internet through existingmechanisms. Internet services are provided by the access network of NGN.

Third party/OSA-based services:NGN provides open API interface for third party or person to developpersonalised services: Third party/OSA-based services are applications developed and provided by vendors

outside the service providers domain using IT technology and tools. Parlay is an open standard APIdesigned to facilitate easier access to core network capabilities from outside of the network. Such API

allows the existence of new business models.

1.2 SERVICES PROVIDED BY SOFTSWITCH Abbreviation Dialling: Abbreviated dialing is the use of a short telephone numbers to reach public

services. Typically these are two or three digits.

Absent Subscriber Service: This feature makes possible for a subscriber who cannot answer the calls,because he/she is absent, to divert these calls to an announcement

Advice of Charge: This service provides the end user with information about the costs of a call and theaccumulated charges on the end users call meter counters.

Anonymous Call Rejection: The Anonymous Call Rejection service enables a user to reject calls fromanonymous parties who have explicitly restricted their Caller ID. By activating the service, callers withoutavailable caller identification are informed that the user is not accepting calls at that time. The user's phone

does not ring and the user sees or hears no indication of the attempted call.

Auto Call back: When the calling person is engaged, calling part can register for Auto Call back byinserting a specified button or key on the calling instrument. It is not possible to place an automatic call

back if the called number is diverts to voicemail. As soon as the called party hangs up, a call will set up

automatically from caller to the called party - both r phones will ring. This feature saves time and network

resources to keep trying the same number over and over.


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Automatic Alarm Ring Service: This feature allows a subscriber to set an alarm call or reminder call onhis phone. At the specified time a call is made to the subscriber and an announcement is fed on receiving

the call. If the subscriber does not answer the phone within one minute (or ringing time out which ever is

later) or if the subscriber is busy, the alarm call will be repeated 5 minutes later. If the repeat attempt is also

unsuccessful, a report is produced on the suitable media and request cancelled.

Automatic Hold/Retrieve: The Automatic Hold/Retrieve service provides an alternate method to hold andretrieve calls for System users. Specifically, service can be setup where calls are held without having to usefeature access codes. The service is especially useful to attendants handling large volume of incoming calls

by allowing them to hold calls by simply transferring them to dedicated parking stations.

Call Forwarding Busy: Call Forwarding Busy enables a user to redirect calls to another destination whenan incoming call encounters a busy condition. The user can activate and deactivate the service. If activated,

a user must specify the forwarding number.

Call Forwarding Immediate: Call Forwarding Always enables a user to redirect all calls to anotherdestination. The user can activate and deactivate the service. If activated, a user must specify the

forwarding number.

Call Forwarding No Answer: Call Forwarding No Answer enables a user to redirect calls to anotherdestination when an incoming call is not answered within a specified number of rings. The user can activate

and deactivate the service. If activated, a user must specify the forwarding number and the number of rings

before forwarding.

Call Forward on Not Reachable (CFNR): Call forwarding on not reachable enables the user to redirectcalls to another destination (Phone number, voice mail) when an incoming call encounters a not reachable

condition. The user can activate and deactivate this service through an activation/deactivation procedure.

The caller status can become unreachable in case of power failure or LAN cable disconnection.

Call Forwarding Remote Access: Call Forwarding Remote Access enables users to activate, deactivate,and program their Call Forwarding service from any phone.

Call Forwarding Selective: Call Forwarding Selective enables a user to define criteria that causes certainincoming calls to be redirected to another destination. If an incoming call meets user specified criteria, the

call is redirected to the user specified destination. The user controls the service via an interface, which

provides the ability to set the forwarding destination address and the criteria sets for determining which

calls require forwarding. A criteria set is based on incoming calling line identity, time of day, and day ofweek. Multiple criteria sets can be defined and a different forward-to number can be set for each.

Call Hold: This allows the user to place a caller on hold and make another call to some other number. Call Intercept: Call Intercept records the call contents and identity and gives several options for handling

the call.

Call Return: Call Return enables a user to call the last party that called, whether or not the call wasanswered. To call back the last party that called, the user dials the call recall star code. The system stores

the number of the last party to call, and connects the user to that party.

Call Waiting: Call Waiting enables a user to answer a call while already engaged in another call. When asecond call is received while a user is engaged in a call, the user is informed via a call waiting tone. To

answer the waiting call, the user depresses the flash hook. The user connects with the waiting party and

holds the original party. By depressing the flash hook, the user reconnects to the original party and holds

the waiting party. The feature completes when any party hangs up. Users can activate/deactivate the Call

Waiting service for all incoming calls via their web interface. Users also have the option of canceling their

Call Waiting on a per-call basis by dialing a star code before making the call, or after a switch-hook flash

during the call. Once the call is over, Calling Waiting is restored.

Calling Line ID Delivery: Calling Line ID Delivery enables the delivery of a caller's identity. Deliveredinformation includes the caller's phone number and name. The information is delivered to the web interface

and the phone (if capable) only if the information is available and has not been blocked by the caller.


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Carrier pre-selection: Carrier Pre-Selection (CPS) is a mechanism that allows end-users to select, inadvance, alternative Service Providers to carry their calls without having to dial a prefix or install any

special equipment at their premises.

Centrex Facility: Centrex facility provides a virtual PABX facility for group of subscribers. Closed User Group: A Closed User Group is a logical group within the operators network. Users

belonging to a Closed User Group are permitted to communicate with each other but not with users

outside the group. A user data terminal equipment (DTE) may belong to more than one closed user group.

Dial-up Call: It is for connecting a network connection, e.g. Internet, which requires a telephone number tobe dialled.

Direct Inward/Outward Dialling: This feature is applicable for Centrex or PABX users. Users can beassigned a directory number that can be used to place/receive calls directly from/to their phone, without

forcing access via a central number. Incoming and outgoing calls can be placed/received via the phone or

the Call Manager (except an initial incoming call, for which the phone must be taken off hook).

FAX Call: Point-to-point FAX and Multi-point FAX services are supported. Immediate and Timed hot line: When a subscriber goes off hook or sends calling condition to the switch,

the switch sets up immediately or after a specified delay period (within the delay period the subscriber will

be able to initiate a normal call), a connection to a predetermined telephone number. The number

registration can be done either by the subscriber, or, on request, by the administration.

Incoming Call only: This facility restricts the user to receive incoming call only. Malicious call trace: Malicious Call Trace enables a user to request, the calls which have been received to

be automatically traced by dialling a feature access code after the call.

Missed Call Notification (MCN): This service provides the subscriber details of missed call or messagereceived by him. Based on calling line identification presentation (CLIP) and short message service (SMS),

missed call notification is sent to the subscriber.

Non Metered Call: This facility enables certain numbers as toll free number. Calls made to these numbersare not charged.

Outgoing Call only: This facility restricts the user to make outgoing call only. O/G Call Restriction Service or Subscriber controlled dynamic STD/ISD: This feature enables a

subscriber to bar certain O/G directions from his telephone line. The types of barred directions are

prescribed by the administration, and the subscriber can activate and deactivate them. The subscriber can

also activate and deactivate the service by registering secret password which can be changed by the

subscriber.

Pay Phone/Coin collecting Box Service: This feature allows calls from special telephone instrument(called CCB PCO) permitting O/G calls after insertion of adequate coin(s), token or coded cards, and I/C

calls without payment. O/G calls to certain services (e.g. emergency service) may be admitted without

payment.

Priority Lines: This feature allows some lines in the exchange to be marked as priority lines. These linesget preference while originating calls, in case of abnormal conditions like switch overload or network

congestion. This feature can be useful for individuals or services more responsible for the maintenance of

law and order and security of the citizens, under emergency conditions.

Selective Call Services: This service allows the end-user to give special treatment to calls originating froma pre-defined list of subscriber numbers. The result of this treatment can be either differentiated ringing (for

different members of a family) or rejection of non-expected calls.

Voice Mailbox Service: This service implements all functionality needed to the end user to complete callanswer service.

o Not answered incoming calls are redirected to a voice mailbox, where the caller may leave amessage.


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o The end-users are then informed that a message is waiting in the Mailbox and can retrieve it.o Messaging services give end user the advantages of the telephone answering machine without

owning one.

1.3 SERVICES PROVIDED BY EXTERNAL APPLICATION SERVER Application sharing: Application Sharing is an element of remote access, that enables two or more users

to access a shared application or document from their respective computers simultaneously in real time.

Generally, the shared application or document runs on a host computer and remote access to the shared

content is provided to other users by the host user.

Call Notification: Call Notification enables a user to define criteria that causes certain incoming calls totrigger an e-mail notification. If an incoming call meets user specified criteria, an e-mail (or short message

to a cell phone) is sent to the notify address informing the user of the details of the incoming call attempt.

The user controls the service via a web interface, which provides the ability to set the notify e-mail address

and the criteria sets for determining which calls trigger a notification. A criteria set is based on incoming

calling line identity, time of day and day of week. Multiple criteria sets can be defined.

e-commerce/m-commerce: e-commerce (electronic commerce) and m-commerce (mobile commerce) arethe services on the Internet (especially the World Wide Web) and on mobile phone for buying and selling

of goods and services.

e-learning: e-learning or Electronic learning refers to computer-enhanced learning. It consists of links toselected and reviewed articles, white papers, research reports, journal articles, conferences, workshops,

seminars etc.

Electronic publishing/Information Services: This service provides news, financial matters, travelinformation, movie trailers, sales, promotion etc. on user terminal.

Electronic white boarding: An Electronic white board is a computer-based, distributed, shared graphicaland text working space. One useful application of Electronic white board is for distance learning.

Gaming Content delivery service: This service delivers online multiplayer gaming on PC, Mobile phoneetc.

Instant Messaging: Instant messaging (IM) is a form of real-time communication between two or morepeople based on typed text. The text is conveyed via computers connected over the network.

Location-based services: Location-based services allow global roaming and other location relatedapplications. For example while negotiating a deal on the phone, the other party asks to fax some

information. A location-based service then direct to the nearest public fax machine available. One can

request for weather forecast and receive the forecast for the place where he is. Laptops or Pocket PCs

installed into ambulances, fire brigade, radio taxies, cable TV repair mobile centre etc. could be more

efficiently routed to their next destination.

Multimedia conference: It is the multi-party interaction with each other using voice, picture, video anddata file.

Push to Talk over NGN: Push to talk over NGN is an IP based half-duplex voice service for easy-to-usewalkie-talkie style communication for the customers.

Radio Streaming/ Music on Demand (MoD): Radio streaming is audio transmission over a data networkto deliver audio on demand or an audio broadcast. Unlike sound files (WAV, MP3, etc.) that are playedafter they are downloaded, streaming audio is played within a few seconds of requesting it, and the data is

not stored permanently in the audio play device. Music-on-Demand enables individuals to select audios

from a central server for listening music on computer or any other audio device.

SMS/MMS Service: Multimedia Messaging System is a communications technology developed by 3GPPthat allows users to exchange multimedia communications between capable mobile phones and other

devices. An extension to the Short Message Service (SMS) protocol, MMS defines a way to send and

receive, almost instantaneously, wireless messages that include images, audio, and video clips in addition


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to text. A common current application of MMS messaging is picture messaging (the use of camera phones

to take photos for immediate delivery to a mobile recipient).

TV Broadcast: In traditional television delivery, all programmes are broadcasted simultaneously. Theavailable program signals flow downstream and the viewer selects the program to watch by changing the

channel. IPTV, by contrast, sends only one program at a time. Content remains on the service provider's

network and only the program the customer selects is sent to the home. When a viewer changes the

channel, a new stream is transmitted from the service provider's server directly to the viewer.

Unified Messaging: Unified messaging (sometimes referred to as the unified messaging system orUMS) isthe handling of voice, fax, and regular text messages as objects in a single mailbox that a user can access

either with a regular e-mail client or by telephone. The PC user can open and play back voice messages,

assuming their PC has multimedia capabilities.

Video Streaming/ Video on demand (VoD): Video streaming is a video transmission over data network todeliver video-on-demand or a video broadcast service. Unlike movie files (MPG, AVI, etc.) that are played

after they are downloaded, streaming video is played within a few seconds of requesting it, and the data is

not stored permanently in the video play device. Video-on-Demand enables individuals to select videos

from a central server for viewing on a television or computer screen.

Web browsing: Web browser is a software application used to locate and display Web pages. The twomost popular browsers are Netscape Navigator and Microsoft Internet Explorer. Both of these are graphical

browsers, which mean that they can display graphics as well as text. In addition, most modern browsers can

present multimedia information, including sound and video, though they require plug-ins for some formats.

Subscribers can control their subscribed services through Web Portal. Following services can be invoked

via the web portal:

(a) Click-to-dial

(b) Call Answer

(c) Call Hold/Retrieve

(d) Call Release

(e) Call Transfer

(f) Three-way Conference

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