Tec Newsletter 2005 January Issue 1


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Tec Newsletter 2005 January Issue 1

  1. 1. NEWSLETTER h lh lp d TELECOMMUNICATION ENGINEERING CENTRE VOL 9 JANUARY 2005 ISSUE 1 Push-To-Talk IP Packets IP Packets Mobile Packet Switched Push to Talk Core IP Packets IN THIS ISSUE Ÿ Push-To-Talk Ÿ World Summit on the Information Society (WSIS) Ÿ Reorganization of TEC
  2. 2. January 2005 2 TEC Newsletter for new services to increase the subscriber base, izkDdFku lower customer churn and increased Average Revenue Per User (ARPU). Push-To-Talk is currently talked about in the mobile industry as one nwjlapkj bathfu;jh dsUnz ds lekpkj such service. if=dk ds izdk'ku ds vkB oquot;kZ iwjs gks x;s gSaA Push-To-Talk (PTT), also referred to as PoC ge vkidh lrr~ #fp o ljkguk ds fy;s (Push-To-Talk over Cellular) is a wireless service vkHkkjh gSaA that turns mobile phones into long-range walkie- talkies by connecting to other phones without nwjlapkj bathfu;jh dsUnz dks iquZxfBr dialling. Instead of calling, one can simply push a fd;k tk jgk gSA tcfd nwjlapkj bathfu;jh button and talk to members of a group. The speech dsUnz Hkkjr esa nwjlapkj ekudhdj.k dh will be one-way-at-a-time rather than a two-way ftEesnkjh fuHkkrk jgsxk] ch ,l ,u ,y @ ,e conversational mode. It can be used for short- duration and high-urgency voice communications Vh ,u ,y ds fy;s ijh{k.k dh ftEenkjh ch ,l and keeps an 'always-on' connection between ,u ,y dks LFkkukarfjr dh tk jgh gSA groups of frequently called mobile subscribers like izkS|ksfxdh {ks= esa nwjlapkj n`'; jkspd cuk family, colleagues, business associates etc. All jgsxk D;ksafd uohu lsokvksa dh yxkrkj ekax members of the group can hear the speech from others. The listener need not press any button to gksrh jgsxhA Hkkjr esa eksckby Qksu ds {ks= esa hear the speech from others. It is always on. vnHkqr o`f¼ gks jgh gSA czkMcSaM lsok vkjEHk Push-To-Talk is built around VoIP (Voice over IP) gksus tk jgh gSA nwjlapkj bathfu;jh dsUnz] technology. lekpkj if=dk ds ekè;e ls nwjlapkj {ks= esa Standards gq, fodkl ls lEcaf/kr lekpkjksa dks izLrqr djrk jgsxkA Standardisation towards an access-independent and globally interoperable standard for PTT is in eSa bl volj ij ikBdksa o muds progress. ifjokj okyksa dks lq[ke; o lEiék uo oquot;kZ dh Open Mobile Alliance (OMA), a Standards gkfnZd 'kqHkdkeuk,sa nsrk gw¡A Development Organisation with membership of mobile operators, manufacturers, IT companies (txnh'k jk; xqIrk) and content providers is specifying mobile ofj- mi egkfuns'kd] VhbZlh services to ensure global interoperability. Joint efforts by equipment manufacturers to drive a common worldwide PTT standard through OMA Push-To-Talk are on. It is expected to be based on IP Multimedia Subsystem (IMS) being developed by 3GPP/3GPP2. Note : This article is for providing technical information only and does not take into consideration the terms and IP Multimedia Subsystem (IMS) conditions of service providers to run this service. No party may construe the content as a permission to run the IMS is a new framework, basically specified service for mobile networks, for providing IP based Mobile telecom is witnessing a phenomenal services. IMS will be useful to deliver one-to- growth worldwide. Mobile operators are looking one and one-to-many real-time multimedia
  3. 3. h lh lp d t h 00 communications. IMS uses the Session Initiation Existing PTT implementations are based on Protocol (SIP) an application-layer signalling proprietary architectures limiting it to single protocol defined by the IETF, for signalling and operator, single vendor solutions. Push-To-Talk session control for real-time multimedia services. can be implemented using switch based solutions 3GPP/3GPP2 has introduced IMS in two releases or central server based solutions. Switch based (release 5 and release 6). The IMS framework solutions will need software upgrades in each MSC facilitates: and other network elements. On the other hand, IMS infrastructure is still evolving and could be Person-to-person real-time IP-based · expensive at present. In the intermediate stage, multimedia communications as well as operators are planning to implement the service by person-to-machine communications deploying a central IP service node. Different · Integration of real-time with non-real-time network elements need not be upgraded with multi-media communications software to support Push-To-Talk service. This · Interaction of different services and approach will enable the operators to deploy the applications service quickly in a cost-effective manner. At the · Easy user setup of multiple services in a same time, it will be possible to upgrade and single session or multiple sessions interoperate with a future IMS infrastructure. Implementation of Push-To-Talk Depending on the availability of stable global standards, operators would be looking to introduce Implementation of Push-To-Talk requires support from network elements as well as terminals. future-proof solutions based on open standards and Moreover, different mobile technologies like off-the-shelf hardware, to ensure interoperability GSM, CDMA etc. are in use worldwide. across networks and terminals. · Provisioning · Network Management · Customer care and billing Push-To-Talk Application Servers IP Multimedia Subsystem (IMS) Mobile Packet Switched Core (GSM/CDMA) Implementation of Push-To-Talk Service
  4. 4. January 2005 4 TEC Newsletter Depending on the success of PTT, different service flavors could emerge. The use of Presence, Industry Gears Up Availability and Location (PAL) services will add convenient features like determining the l Push-To-Talk, using both GSM and availability of a PTT subscriber before making a CDMA technologies, is gaining call; notifying other services when engaged in a momentum worldwide and several PTT call etc. operators including Orange, Sprint PCS, Verizon, Telstra, and Cellcom Important Activities of TEC during have already launched the service with October to December 2004 several others to follow soon. A. Preparation of GRs/IRs & Technical l Push-To-Talk enabled handsets are documents available in the market. GRs l Market analysts forecast that if mobile · 60 Meter Narrow Base Light Weight for Cellular Systems o p e r a t o r s u t i l i s e P u s h - To - Ta l k · GSM SIM Card for 16 KB successfully in terms of pricing and · Centralised Control and Monitoring of market strategies, the service could see Power Plants and its associated over 350 million subscribers worldwide equipment by 2009, generating almost $12 billion · 40/30/20 Meter Tower for Cellular in revenue. System l Some operators in India have launched Revised GRs/IRs the service and others are gearing up. · 7 GHz SDH-STM-1 M/W equipment · Permanently Lubricated HDPE Telecom Source: Internet & GSA Ducts for use as Underground Optical Fibre Cable Conduits Terminals · High Speed Internet Leased access line Since deployment of PTT requires terminal doubler support, availability of mass-market handsets is a · System Employing Computer Telephony prerequisite. Capabilities to provide customer Integration managed group lists and mixing with other · 800 and 1900 MHz Patch Panel Antenna services like SMS, MMS etc. will be needed in the · 15 GHz High Performance Antenna terminals. Terminals supporting features for · IR for Router Push-To-Talk have already been introduced by B. Tests and Field trials several leading terminal manufacturers. GSM, IN and GPRS · Other Issues STM-1 equipment of C-DOT · Since PTT is based on VoIP, issues related to call LAN switch of M/s Huawai · set-up time and latency will be critical. It is Billing Server (iCollect) of M/s ITI · reported that some of the initial deployments using ADSL-DIAS of M/s Banyan Networks · CDMA have experienced longer call set-up time, Chennai when the sender and receiver are in a dormant state. 16K and 32K GSM SIM Cards of M/s · It is expected that call set-up time will improve as G & D, Schlumberger and Syscom and ITI GSM and CDMA standards further evolve.
  5. 5. h lh lp d t h 00 A High-Level Summit Organising Committee World Summit on the (HLSOC) has been established under the Information Society (WSIS) patronage of Kofi Annan, UN Secretary-General. Its purpose is to coordinate the efforts of the international United Nations family in the The UN General Assembly Resolution 56/183 (21 preparation, organisation and holding of WSIS. December 2001) endorsed the holding of the The UN agency that holds the leading role in the World Summit on the Information Society (WSIS) organisation of the Summit is the International Telecommunications Union (ITU), based in in two phases. The first phase took place in Geneva Geneva (Switzerland). Charles Geiger, a Swiss hosted by the Government of Switzerland from 10 national has been appointed on 1st November 2004 to 12 December 2003 and the second phase will as the Executive Director of the WSIS Executive take place in Tunis hosted by the Government of Secretariat, based at ITU headquarters to organise Tunisia, from 16 to 18 November 2005. the seemed phase or the summit in Tunis. World Summit - The Need for a Global Phase 1 : Geneva, 10-12 December 2003 Discussion The objective of the first phase was to develop and The digital revolution, fired by the engines of foster a clear statement of political will and take Information and Communication Technologies, concrete steps to establish the foundations for an has fundamentally changed the way people think, Information Society for all, reflecting all the behave, communicate, work and earn their different interests at stake. At the Geneva Phase of livelihood. WSIS nearly 50 Heads of state/government and Vice-Presidents, 82 Ministers, 26 Vice-Ministers Paradoxically, while the digital revolution has and Heads of delegation as well as high-level extended the frontiers of the global village, the representatives from international organisations, vast majority of the world remains unhooked from private sector, and civil society provided political this unfolding phenomenon. With the ever- support to the WSIS 'Declaration of Principles' widening gulf between knowledge and ignorance, and 'Plan of Action' that were adopted on 12 the development gap between the rich and the poor December 2003. More than 11,000 participants among and within countries has also increased. It from 175 countries attended the Summit and has therefore become imperative for the world to related events. The scope and nature of this bridge this digital divide and place the Millennium ambitious project requires new public-private partnerships, many of which were formalised Development Goals (MDGs) on the ICT- during the Geneva Summit. Some of them were accelerated speedway to achievement. specifically targeted at bridging the digital divide. Recognising that this new dynamic requires global Phase 2 : Tunis, 16-18 November 2005 discussion, the International Telecommunication Union, following a proposal by the Government of The task of the Tunis phase of the Summit will be Tunisia, resolved at its plenipotentiary Conference to refine some of the broader goals agreed in in Minneapolis in 1998 (Resolution 73) to hold a Geneva and to hammer out the details needed to World Summit on the Information Society (WSIS) translate these goals into measurable results. Furthermore, this second phase of the Summit is and place it on the agenda of the United Nations.
  6. 6. January 2005 6 TEC Newsletter to implement and follow up the Geneva decisions Technological and other changes are rapidly by stakeholders at the nation, regional and inter- transforming the environment in which the national levels. It is also to complete the Information Society is developed. The Plan of unfinished business started in Geneva on Internet Action is thus an evolving platform to promote the governance and on reviewing the current Information Society at the national, regional and mechanisms for financing ICT for development. international levels. The unique two-phase structure of the World Summit on the Information Declaration of Principles Society (WSIS) provides an opportunity to take Key principles for building an Information this evolution into account. Society are identified as the following : 3. All stakeholders have an important role to play 1) The role of governments and all stakeholders in the Information Society, especially through in the promotion of ICTs for development partnerships: 2) Information and communication a) Governments have a leading role in developing infrastructure: an essential foundation for an and implementing comprehensive, forward inclusive information society looking and sustainable national e-strategies. The 3) Access to information and knowledge private sector and civil society, in dialogue with governments, have an important consultative role 4) Capacity building to play in devising national e-strategies. 5) Building confidence and security in the use of b) The commitment of the private sector is ICTs important in developing and diffusing 6) Enabling environment information and communication technologies (ICTs), for infrastructure, content and 7) ICT applications: benefits in all aspects of life applications. The private sector is not only a 8) Cultural diversity and identity, linguistic market player but also plays a role in a wider diversity and local content sustainable development context. 9) Media c) The commitment and involvement of civil 10) Ethical dimensions or the Information society is equally important in creating an Society equitable information Society, and in implementing ICT-related initiatives for 11) International and Regional cooperation development. Plan of Action d) International and regional institutions, 1. The common vision and guiding principles of including international financial institutions, have the Declaration are translated as Plan of Action a key role in integrating the use of ICTs in the into concrete action lines to advance the development process and making available achievement of the internationally-agreed necessary resources for building the Information development goals. The Information Society Society and for the evaluation of the progress envisaged in the Declaration of principles will be made. realised in cooperation and solidarity by Objectives, goals and targets governments and all other stakeholders. 4. The objectives of the Plan of Action are to build 2. The Information Society is an evolving concept an inclusive Information Society, to put the that has reached different levels across the world, potential of knowledge and ICTs at the reflecting the different stages of development.
  7. 7. h lh lp d t h 00 service of development; to promote the use of schools and primary schools with ICTs; information and knowledge for the achievement of c) to connect scientific and research centres with internationally agreed development goals, ICTs; including those contained in the Millennium d) to connect public libraries, cultural centres, Declaration; and to address new challenges of the museums, post offices and archives with ICTs; Information Society, at the national, regional and international levels. Opportunity shall be taken in e) to connect health centres and hospitals with phase two of the WSIS to evaluate and assess ICTs; progress made towards bridging the digital divide. f) to connect all local and central government 5. Specific targets for the Information Society will departments and establish websites and email be established as appropriate, at the national level addresses; in the framework of national e-strategies and in g) to adapt all primary and secondary school accordance with national development policies, curricula to meet the challenges of the taking into account the different national Information Society, taking into account circumstances. Such targets can serve as useful national circumstances; benchmarks for actions and for the evaluation of h) to ensure that all the world's population have the progress made towards the attainment of the access to television and radio services; overall objectives of the Information Society. i) to encourage the development of content and 6. Based on internationally agreed development to put in place technical conditions in order to goals, including those in the Millennium facilitate the presence and use of all world Declaration, which are premised on international languages on the Internet; cooperation, indicative targets may serve as global references for improving connectivity and access j) to ensure that more than half the world's in the use of ICTs in promoting the objectives of the inhabitants have access to ICTs within their Plan of Action, to be achieved by 2015. These reach. targets may be taken into account in the 7. In giving effect to these objectives, goals and establishment of the national targets, considering targets, special attention will be paid to the needs of the different national circumstances; developing countries, and in particular to least a) to connect villages with ICTs and establish developed countries, peoples living in remote & community access points; rural areas and vulnerable groups. b) to connect universities, colleges, secondary Source : ITU wesite Approvals issued by TEC during the period Approvals issued by TEC upto October 2004 to December 2004 31.12.2004 Type Approvals…………………............ 7018 Type Approvals…………………............ 112 Interface Approvals……………............. 4065 Interface Approvals……………............. 50 Service Test Certificates...…...….......... 1684 Service Test Certificates...…...…......... 7 Grand Total ……………………............ 12767 Total ……………………....................... 169
  8. 8. January 2005 8 TEC Newsletter of different service providers Re-organisation of Telecom Engineering Centre (TEC) (iv) Creating facilities to further the objectives of Mutual Recognition Arrangements TEC is reorganised as below: (MRA) The functions of Interface Approvals and · The work which is BSNL/MTNL specific, i.e. · evaluating the rollout of services by Type Approvals, network engineering, operators including issuance of Service solving the field problems, network planning Test Certificates will be performed by the & dimensioning, is being transferred to Regional Centres of TEC i.e RTEC at BSNL. Delhi, Mumbai, Banalore and Kolkata. · The work relating to issue of Generic TEC will continue to carry out all types of · Requirements (GRs), Interface Approvals, Interface Approvals. Fundamental Technical Plans, technical support to DoT shall continue with TEC. In RTEC, Hyderabad and sub-centres at · addition, TEC may provide, as and when Chennai and Pune are closed. requested by DoT, technical advice to TRAI Some more related news : and TDSAT. BSNL will set up five Technical Specification · TEC will develop necessary expertise to · Evaluation Centres at New Delhi, Mumbai, imbibe the latest technologies and results of Hyderabad, Bangalore and Kolkata. R&D and coordinate with C-DOT to provide details on the technological developments The Approval Certificates to be issued by · in the Telecom Sector for policy planning at BSNL shall be termed as “Technical DoT level. Specification Evaluation Certificate” (TSEC). TEC will continue to work under DoT, as at · BSNL QA Wing will register new cases for · present, as an attached office of DoT. TSEC-starting from 1st January 2005. The existing test fee structure of TEC shall be The following items of work will also be · adopted by BSNL for the time being. looked after by TEC (i) Interaction with multilateral agencies like All the ongoing cases of Type Approval · APT, ETSI and ITU, etc. st pending with TEC as on 31 December 2004 shall be made over to BSNL, on as is (ii) Preparing standards for harmonious where is basis. From 1st January 2005, BSNL growth of the Indian telecommunication will issue TSEC for all such pending cases. network, with the participation of public as well as private sector operators The validity of existing Type Approval · Certificates issued by TEC will be accepted (iii) Approving inter-operator Network- by BSNL and their further renewal as TSEC Network Interfaces (NNI) for facilitating will be carried out by BSNL. interoperability between various networks Prabhat Publicity, New Delhi Vh bZ lh lapkfjdk nwjlapkj bathfu;jh dsUnz [+kq'khZnyky Hkou tuojh 2005 tuiFk Hkkx 9 ubZ fnYyh&110001 vad 1 Editor : I. S. Sastry, DDG (S) Phone : 23329540 Fax : 23723387 Email : ddgsw@bol.net.in