SIP Provider Plusnet (DE), IPfonie Extended (kb5251)

The information in this article applies to:

  • SwyxWare 11

[ Summary | Information | Links ]


Information und configuration hints for IPfonie Extended from SIP provider Plusnet (Germany).


General information

In 2018, QSC AG spun off its telecommunications business into a wholly-owned subsidiary, Plusnet GmbH. QSC's well-known SIP Trunk IPfonie Extended will only be available until the end of 2019. Plusnet's IPfonie Extended SIP Trunk is now available. 

The IPfonie Extended SIP trunk from Plusnet is a SIP trunk with user authentication. You have received information about UserID, UserName and UserPassword, whereas the naming may differ, or you might have only received UserName and -password. In this case, UserID and UserName are identical.


SwyxWare: The IPfonie Extended SIP trunk from Plusnet can be used from SwyxWare 2011R2 on.

SwyxON: The IPfonie Extended SIP trunk from Plusnet is suitable for central connection in the data center.


During creation of the SIP Trunkgroup, profile 'Plusnet IPfonie (DE)' must be selected. If the profile is not included in the corresponding list, you can download the required CustomProviderProfiles.config for SwyxWare at the end of this article. For more information about using this file, see Configuration and Adaptation of SIP Providers via Provider Profiles (kb3436).

No additional configuration is necessary after creating the configuration with the configuration wizard.

Tested Features

  • Incoming/outgoing national calls
  • Incoming/outgoing international calls
  • Correct Calling Line Identification (CLI) on national and international calls
  • CLIP No Screening in accordance with the description above
  • Holding and retrieving calls
  • Toggeling between two calls
  • Call transfer
  • Call forwarding
  • Conferencing
  • Mutually supported codecs:
    • G.722
    • G.711a
    • G.711µ
    • G.729
    • T.38 for FAX negotiation
  • Incoming/outgoing DTMF signaling in accordance with via RFC2833
  • T.38 Negotiation and FAX transmission

Test date:
31/08/2012 with SwyxWare2011R2, QF3 (QSC IPfonie Extended)
02/07/2013 with SwyxWare2013 (QSC IPfonie Extended)
06/11/2014 with SwyxWare2015 (QSC IPfonie Extended)
14/09/2017 mit SwyxWare 11 (QSC IPfonie Extended)

Overview of tested SIP provider


As far as software supplied or used by us, includes open source elements the additional terms under apply in addition. An overview which products from the Swyx portfolio include open source elements and which open source license is relevant can be found under

The third-party contact information included in this article is provided to help you find the technical support you need. This contact information is subject to change without notice. Swyx in no way guarantees the accuracy of this third-party contact information nor is responsible for it's content.


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