Mobile PBX

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Conventional PBX
Mobile PBX

A mobile PBX ( PBX = Private Branch Exchange) or mobile branch exchange is a mobile radio-based variant of a telephone system . Thus, a mobile PBX is a switching facility that connects multiple mobile terminals both with one another and with the public telephone network. It represents an extension to VPN and MSC services.

principle

In the case of a mobile private branch exchange, the user is provided with typical services of a conventional telephone system ( e.g. direct dialing , waiting loops , call forwarding , conference calls, free calls between connected participants, etc.) by a mobile communications company via its mobile communications network . Physical system components at the user ( telephone connection for each workstation, cabling, fixed telephone system at the customer's location, etc.) are no longer necessary. Attendant console solutions are made available using special software . All you need is a PC with a broadband connection . Mobile PBX solutions therefore offer a flexible and cost-effective alternative to conventional, fixed telephone systems.

Advanced mobile PBX solutions support complex functionalities that cannot be implemented on conventional telephone systems or can only be implemented using special configurations. These include functions such as an automated operator station , Internet fax , call control and forwarding via software or special CRM integration options.

Framework

Number porting

In order to be able to receive landline calls on the mobile phone with a mobile PBX solution, the landline number of the user is ported to the network of the mobile phone provider . If the user does not have his own landline number, this is provided by the mobile operator, usually free of charge.

Fixed network termination point

In order to guarantee the legal regulations of the Röchelruf , a so-called fixed network termination point (OFN) must be installed at the user's premises when using a mobile PBX. This ensures that the landline telephone number is tied to a specific location. As a rule, this is achieved by a permanently installed modem with an integrated SIM card . Active and mobile use of a landline number is not permitted in Austria, i. H. When receiving calls from the mobile phone, the mobile phone number (and not the landline number) is always displayed on the call receiver.

advantages

  • No number of connection limits as with structured telephone systems
  • Almost unlimited expansion options
  • Great flexibility
  • Free calls between participants
  • Lower capital commitment (no acquisition costs for physical system components, no running costs for maintenance or rental contracts)
  • No space and electricity costs
  • Service features are made available transparently
  • Subscribers can be reached anytime and anywhere thanks to the area-wide cellular network

disadvantage

  • Limited influence and control over the system
  • Predefined standard feature sets allow only limited individual special configurations
  • Quality of Service (QoS) and performance characteristics depending on the mobile network provider
  • Different service and price levels from the various providers

Product variants

Mobile PBXs are available in various designs on the market. In Austria, A1 Telekom Austria offers a solution for medium-sized companies. Orange and Magenta Telekom offer solutions for companies of all sizes. Orange, Drei and Magenta Telekom also offer basic solutions without a switchboard for smaller companies (so-called mobile fixed network replacement ).

distribution

At the moment around 12% of all Centrex- based private branch exchanges are mobile PBX solutions. Scandinavian countries, especially Norway and Sweden, are in charge of the implementation of mobile PBXs.

literature

  • Arnold Picot (Ed.): The Future of Telecommunications Industries. Springer Verlag, Berlin / Heidelberg 2006, ISBN 978-3-540-32553-6 .
  • James E. Katz (Ed.): Mobile Communication: Dimensions of Social Policy. Transaction Publishers, New Brunswick 2011, ISBN 978-1-4128-1468-3 .
  • Yi-Bing Lin, Sok-Ian Sou: Charging for Mobile All-IP Telecommunications. Wiley & Sons Ltd. 2008, ISBN 978-0-470-77565-3 .
  • Jyrki TJ Penttinen: The Telecommunications Handbook . Wiley & Sons Ltd. 2015, ISBN 978-1-119-94488-1 .

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