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- The first telephone line experiences in Portugal connect Carcavelos to the Cable Central in Lisbon.
- Edison Gower Bell Telephone Company of Europe Ltd is set in Lisbon and Oporto, to explore its telephone service leases.
- The lease is transferred to APT - The Anglo Portuguese Telephone Company, which would hold it until 1968.
- A lease contract is celebrated with Marconi’s Wireless Telegraphy Company, to explore radio telegraphy and wireless telephony.
- The Companhia Portuguesa Rádio Marconi - CPRM (Portuguese Company Marconi Radio) is born, assuming all responsibility over the previous concession.
- The Empresa Pública Telefones de Lisboa e Porto (Public Company of Lisbon and Oporto Telephones) is created. The Correios, Telégrafos e Telefones - CTT (Postal, Telegraph and Telephone Services) explored the telephone service in the rest of the country.
- Correios, Telégrafos e Telefones - CTT (Postal, Telegraph and Telephone Services) become a State owned company.
- TLP become an anonymous society, held by the State.
- Public videoconference service is opened at Fórum Picoas.
- Teledifusora de Portugal - TDP (Portugal Broadcasting) is born, which mission is to explore broadcasting infrastructures;
- TMN, Telecomunicações Móveis S.A. (Mobile Communications) is created;
- First videoconference connects Lisbon to Macao.
- CTT become a Public limited company with public capital and Comunicações Nacionais, SPGS SA (National Communications) is created, to manage all the State’s participations in the sector - CTT, TLP, CPRM and TDP. Also that year, telecommunications become independent from the CTT and Telecom Portugal, SA is born;
- Portugal has, thus, its telecommunications network distributed by three operators: TLP explored the telephone service in the Lisbon and Oporto areas; Telecom Portugal was responsible for the remaining national communications, to Europe and the Mediterranean; and Marconi ensured international traffic;
- First fiber optic underwater system cables in Portugal;
- Launch of TMN’s GSM digital network.
- First Portuguese satellite is launched, called PoSat1;
- The third largest optical fiber cable in the world begins its activity, connecting Portugal, Spain and South Africa.
- Portugal Telecom, SA (PT) is formed, a single national telecommunications operator which includes Telecom Portugal, TLP and TDP, companies previously held by Comunicações Nacionais;
- First experimental television broadcast through cable in Portugal;
- SAPO Portal is born at Aveiro University;
- Internet arrives to Portugal and its first service is launched by Telepac, at a maximum speed of 9.600 bps.
- PT integrates the share that Comunicações Nacionais held over Marconi’s capital (51,18%). - - On June 1st its first stage of privatization is concluded. In September, CN is dissolved and the Portugal Telecom shares it held are transferred to the State;
- TMN launches the first pre-paid phone in the world, Mimo.
- In June 1996, PT’s second stage of privatization is completed, involving 21,74% of its capital. The company was privatized up to 49% (93,1 million shares).
- The Sector Delimitation Law allows the State to hold less than 51% of the company’s capital. Thus, the third stage of privatization is concluded, with the conveyance of about 26% of the shares, raising to around 75% the share capital in private hands.
- Portugal Telecom buys Telesp Celular in Brazil, starting its expansion in that country.
- The fourth stage of PT’s privatization takes place. During the operation, the State sells about 13,5% of its capital, equivalent to 25,65 million shares. There is also a 10% increase in the capital destined to the company’s shareholders, from 950 to 1.045 million euros, through the emission of 19 million shares at 5 euros each. 44,65 million shares were placed on the market. This way, the State reduced its shares from 25,15% to around 11%;
- SAPO Portal leads the Internet market in Portugal;
- PT Innovation is born in Aveiro, following the telecommunications center that already existed in that city;
- Portugal Telecom in Brazil, through Telesp Celular, launches the pre-paid mobile phone service “Baby”, which would come to revolutionize mobile communications in that country.
- The fifth and final stage of privatization is concluded, meaning that PT’s capital is almost completely privatized. On December 12, Portugal Telecom, SA changes its social object to Management Company of Shareholdings, under the name Portugal Telecom, SGPS, SA;
- PT leads the telecommunications sector in Portugal and expands its business areas to new technologies, products and services, showing its pioneer spirit beyond the telephone and telegraphic experiences;
- Portugal has broadband coverage on 100% of its territory, becoming the 4th country in the world to achieve this status.
- SAPO ADSL is launched;
- First interactive digital cable TV in the world.
- PT Wi-Fi service is born, in response to the growing mobility needs from the customers. It is the first convergent service in broadband access via radio;
- The joint-venture between Portugal Telecom and Telefónica in Spain is concluded, resulting in one of the largest mobile service providers in Latin America, VIVO;
- PT Innovation develops the broadband access solution DSLAMi allowing, through an analog line, to simultaneously access several services and functionalities such as voice, internet, television and video on demand.
- TMN launches the third mobile generation (3G) and is the leading company in Portuguese mobile communications. With i9 3G, TMN became the third European operator to introduce mobile video calls;
- PT Innovation presents a ground breaking telemedicine solution called Medigraf;
- Portugal Telecom celebrates its 10th year of existence.
- PT launches its Voice Over IP service (VOIP), allowing voice and video calls between computers, through SAPO Messenger software.
- PT presents its IPTV project, announcing the possibility of, in the future, customers being able to enjoy voice, internet and television services through a phone line.
- Portugal Telecom introduces its triple play service, MEO, becoming a worldwide case-study;
- PT resists Sonaecom’s attempt to purchase it;
- TMN reaches 6 million customers;
- PT releases its “Fiber to The Home” project: broadband access entirely over fiber optics.
- PT wins the public tender to DTT (digital terrestrial television);
- PT introduces the MEO Satellite service;
- TMN offers pre-paid mobile broadband access.
- Along with a new image brand, PT begins its fiber optics strategy which will allow taking this technology to the customers’ homes and revolutionize the future of telecommunications in Portugal;
- TMN offers the first Android smartphone, again being a pioneer in Portugal;
- TMN reaches the 7 million customers mark.
- PT presents the 4th Mobile Generation (LTE) project and services, offering speeds from 100 to 150 Mbp;
- PT installs fiber optics in a million households;
- PT sells its 50% share of VIVO to Telefónica and buys a share of theBrazilian company Oi;
- PT becomes the leader in Internet access in Portugal;
- PT presents its Cloud Computing services;
- PT performs the first 100Gbps connection in Portugal, between Lisbon and Oporto;
- MEO reaches computers.
- PT’s optical fiber network is internationally recognized as the best and most innovative in Europe;
- TMN has the best network coverage in the country and introduces 4G in real urban locations;
- PT presents the Data Center to be built in Covilhã, one of the most modern in the world;
- MEO reaches 1 million customers and is considered the best national brand;
- PT launches MEO Go, a service that allows customers to watch television on their computers, smartphones or tablets, inside and outside their homes.
- MEO Kanal launches, allowing the customers to create their own public and private TV channels;
- Portugal Telecom Technology and Innovation Conference is held in Lisbon, looking to showcase the investments made in high end technologies, new generation networks and the innovation plan to B2C and B2B markets;
- MEO Cloud is released, a cloud service that offers 16GB of free storage to everyone;
- The TMN drive smartphone app is released, offering real time traffic information and completely free for MEO customers.
- PT and Oi announce the union of their businesses. The fusion operation, which will result in the incorporation of PT SGPS into the combined company, is a natural consequence of the industrial alliance created between Portugal Telecom and Oi established in 2010 and will result in the creation of a single, leading Telco operator that covers an area with approximately 100 million customers;
- M4O is launched, the first convergent offer of a quadruple play that includes TV, Internet, telephone and mobile phone;
- Automatic Recordings become available to MEO TV customers, becoming possible to watch programs that were broadcasted 7 days earlier;
- MEO Wallet is released, an electronic payment platform, easy to use in several day to day situations;
- Opening of PT’s Data Center, in Covilhã, with the ability to install over 50.000 servers connected to PT’s high speed fiber optics network, with exceptional security and reliability features;
- Investment in the underwater cable infrastructure in Azores, contributing to the development of that region and offering services over 4G and optical fiber.
- Portugal SGPS and Oi reach an agreement about the definite terms of the main contracts to be celebrated following the Memorandum of Understanding. The celebration of the final contracts was approved during Portugal Telecom’s General Shareholders’ Meeting on September 8 2014;
- Global Connect Pack is released, a convergent offer that allows cost control, ensuring greater flexibility and productivity among SMEs;
- SAPO Portal , internet audiences leader in Portugal, creates a new homepage looking to ensure the better technological and usbility experience to its users.
- Since June 2nd 2015, PT Portugal is a subsidiary wholly owned by the Altice Group, leading multinational in the supply of telecommunication services operating in France, Israel, Belgium and Luxemburg, Portugal, French Antilles/ Area of the Indian Ocean and the Dominican Republic ("Overseas Territory") and Switzerland;
- SAPO BIZ launches, a platform for microcompanies, PME and the general public which offers the necessary tools to create an effective and sustainable digital presence, thus contributing to the digitalization of the Portuguese economy;
- MEO revolutionizes the TV experience by launching a new user interface.
- PT Inovação becomes Altice Labs. From Aveiro to the world, this is the nerve centre with the mission of leading the innovation agenda of all Altice Group operations;
- At the first Web summit in Lisbon where PT was a technology partner, PT and Huawei did their first demonstration in Portugal, and one of the first in the world, with a 4.5G mobile network, achieving speeds of 1.7 Gbps, which means twice the premium fibre optic speed;
- Launch of the PT Innovation Award, with the aim of contributing to the identification and promotion of Portuguese technological talent, both individuals and startups.
- Altice reveals its new identity and the brand strategy to be followed by the group;
- Altice/PT announced the arrival, via the MEO service, of fibre optics to 4 million homes and businesses. The same day the Fibre Gateway was introduced, a new 100% Portuguese piece of equipment that makes WiFi ten times faster;
- Launch of the MEO Smart Home service, a pioneering smart home solution that includes security equipment, automation and comfort, as well as features which are controllable and accessible through mobile phones, tablets or computers.
- PT becomes Altice Portugal, maintaining its MEO, PT Empresas, SAPO, MOCHE and UZO.