Skype for Business 2016 enterprise (not O365) and PSTN calling RRS feed

  • Question

  • One of my clients has Skype for Business as part of an Office 2016 Enterprise on an RDWeb server. One of the users was asking about PSTN calling for Skype. Is the PSTN service only available if we are using a hosted Skype for business as part of an O365 service?


    Friday, March 31, 2017 11:22 PM

All replies

  • On-Premise SfB can be integrated to a PSTN Gateway, so that PSTN service will be available for the customer.

    If the customer has qualified pbx installed currently, then they can integrate with SfB directly otherwise they will need to invest on qualified gateways... pls refer below link.

    Saturday, April 1, 2017 9:22 PM
  • Hey Alceryes,

    Just to expand on what Shankar said below, you have a few options for PSTN calling.

    If you're one of the lucky 5 countries listed below, you can sign up and make PSTN calls straight from Office 365 right now without any additional servers/gateways on premise:

    • US
    • UK
    • France
    • Spain
    • Puerto Rico

    If you're outside one of those countries, you can do one of two things:

    Deploy Cloud Connector Edition
    The easier of the two options. I've blogged about this solution here:

    Essentially, you deploy a Hyper-V host that runs a cut down version of Skype for Business on premise, together with an SBC (audiocodes, Sonus etc) and an ISDN/SIP Trunk.

    Deploy Skype Hybrid premise
    A bit more involved, but essentially you deploy an on premise Skype for Business deployment (minimum Standard edition, mediation, edge and reverse proxy, with an SBC and SIP trunk). Typically, this is only used when you already have Skype infrastructure on premise.


    Monday, April 3, 2017 1:40 AM
  • Hi Alceryes,

    Agree with others.

    For SFB on premise server, you could use PSTN call without any problems.

    The following document is for your reference

    If you use SFB online but your country is not supported for the PSTN service, you could use CCE, after this, the users who are homed on SFB online could use SFB on premise PSTN service.


    Alice Wang

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    Wednesday, April 26, 2017 2:54 AM