Question: What kind of calls does the company that Janus Friis co-founded allow you to make?

Context paragraphs:
Mike Volpi: Michelangelo "Mike" Volpi (born 13 December 1966) is an Italian-American businessman and venture capitalist.  He co-founded Index Ventures’ San Francisco office with Danny Rimer in 2009 and was previously Chief Strategy Officer of Cisco Systems during the company’s prominent growth era, acquiring over 70 companies in less than five years.  In 2007 he left Cisco and became Entrepreneur in Residence (EIR) at Sequoia Capital.  A few months later, he was appointed CEO of Joost, an internet TV service created by Skype founders Niklas Zennström and Janus Friis.  In 2009 he became General Partner at Index Ventures.

Skype: Skype ( ) is a telecommunications application software product that specializes in providing video chat and voice calls from computers, tablets, and mobile devices via the Internet to other devices or telephones/smartphones.  Skype additionally provides instant messaging services.  Users may transmit both text and video messages, and may exchange digital documents such as images, text, and video.  Skype allows video conference calls.

Joost: Joost was an Internet TV service, created by Niklas Zennström and Janus Friis (founders of Skype and Kazaa).  During 2007-2008 Joost used peer-to-peer TV (P2PTV) technology to distribute content to their Mozilla-based desktop player; in late 2008 this was migrated to use a Flash-based Web player instead.

Janus Capital Group: Janus Capital Group, Inc. was an American publicly owned investment firm headquartered in Denver, Colorado.  The company's asset-management disciplines included growth, core, international, value, mathematical, alternative and fixed-income.  These products were sold through advisors and financial intermediaries, to institutional investors and directly to retail investors.  Janus Capital Group was created as a result of the January 1, 2003, merger of Janus Capital Corporation into its parent company, Stilwell Financial Inc.  Janus Capital Group consists of Janus Capital Management LLC (Janus), INTECH Investment Management LLC (INTECH), and Kapstream Capital Pty Limited (Kapstream), in addition to a range of exchange‐traded products.  Additionally, Janus Capital Group owns 80% of Perkins Investment Management (formerly Perkins, Wolf, McDonnell and Company).

Niklas Zennström: Niklas Zennström (born 16 February 1966) is a Swedish billionaire entrepreneur best known for founding several high-profile online ventures with Janus Friis including Skype and Kazaa.  More recently he founded the technology investment firm Atomico and has become a significant figurehead for entrepreneurs in the tech sector.  Zennström is also the co-founder of the charity organization Zennström Philanthropies.

Vdio: Vdio Inc. was an internet television service created by Skype and Rdio co-founder Janus Friis in 2011.  On April 2, 2013, Vdio was officially launched for Rdio premium subscribers.  Vdio's platform for sharing content is a pay-per-view system compared to Rdio's unlimited streaming.  Similar to the main players in the video streaming market, Amazon and Netflix, Vdio offers a varied catalog that ranges from cult classic titles to new releases from major studios.  From April 2013, the service was available in the United States and the United Kingdom (though it has now been discontinued).  Current Rdio subscribers were given US$25 in credit to spend on Vdio.

Friis &amp; Moltke: Friis & Moltke is a Danish architectural practice headquartered in Aarhus with branch offices in Copenhagen and Aalborg.  Friis & Moltke has about 50 employees and is mainly active in the Scandinavian market.  The firm was founded in 1955 by the architects Knud Friis and Elmar Moltke Nielsen who met while working at C. F. Møller Architects in Aarhus.  Today the company has 6 partners and 1 associated partner responsible for the department of furniture design.

Janus Friis: Janus Friis (] ; born 26 June 1976 in Copenhagen) is a Danish entrepreneur best known for co-founding the file-sharing application Kazaa, and the peer-to-peer telephony application Skype.  In September 2005, he and his partner Niklas Zennström sold Skype to eBay for $2.6B.  Friis has maintained ownership interest in Skype through Silver Lake Partners, which sold Skype to Microsoft for $8.5 billion, in May 2011.

Isaac Mostovicz: E. Isaac Mostovicz is a consulting academic in the fields of luxury marketing and the diamond industry.  He has published on the topic of luxury and human logic and is the developer of the Lambda and Theta Worldview identification metrics and the philosophy behind it that he calls Janus Thinking or Human Logic.  He is currently president of Janus Thinking Ltd and Allied Diamonds Inc.  Mostovicz recently helped creating Kahro Diamonds Inc. in Raleigh NC, which approach follows Mostovicz's ideas on luxury.  He is also the author of Janus Thinking, a blog on luxury and luxury marketing.

Knud Friis: Knud Friis (March 12, 1926 – November 25, 2010) was a Danish Modernistic architect who worked extensively in Denmark and founded Friis & Moltke.  Knud Friis was born in Stilling on 12 March 1926 to Anton Friis and Petra Laurine Laursen and graduated from "Herning Gymnasium" in 1944.  During the Second World War Friis was active in the Danish resistance in operations for receiving supplies.  In 1950 he graduated from the Royal Danish Academy of Fine Arts school of architecture and was subsequently employed at C. F. Møller Architects in Aarhus where he worked on projects for Aarhus University and Aarhus Katedralskole.  In 1957 he founded the architects company Friis & Moltke with Elmar Moltke Nielsen.  Friis was married on 27 May 1950 in Ringkøbing to Bodil Johanne Andersen.

Supporting paragraphs: Janus Friis Skype
Answer: video conference calls