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About Lync / Skype for Business servers

Pexip Infinity uses Lync / Skype for Business* servers to route outbound MS-SIP calls.

Outbound calls are made from Pexip Infinity when:

You can configure the addresses of one or more Lync/SfB servers within Pexip Infinity. These can be Front End Servers or a Directors; they cannot be Edge Servers.

Within an on-prem Lync / Skype for Business environment, you must then associate a specific Lync/SfB server with a System location, Call Routing Rule or Virtual Reception to instruct Pexip Infinity to use that Lync/SfB server when it places an outbound MS-SIP call from a Conferencing Node in that location, or when it matches that routing rule.

Within a public DMZ Lync / Skype for Business deployment, you must ensure that a Pexip Infinity location is not configured to route calls to a specific Lync/SfB server. This is to ensure that each Conferencing Node uses DNS to locate an appropriate Lync/SfB system via which to route outbound calls.

To add, edit or delete Lync/SfB servers, go to Call control > Lync / Skype for Business servers.

The available options are:

Option Description
Name The name used to refer to this Lync/SfB server in the Pexip Infinity Administrator interface.
Description An optional description of the Lync/SfB server.
Address The IP address or FQDN of the Lync/SfB server.

The IP port on the Lync/SfB server to which the Conferencing Node will connect.

Default: 5061.


The IP transport used to connect to the Lync/SfB server.

Default: TLS.

To associate a Lync/SfB server with a System location, go to Platform configuration > Locations, to associate it with a Call Routing Rule, go to Service configuration > Call routing, and to associate it with a Virtual Reception that is acting as an IVR gateway to scheduled and ad hoc Lync/SfB meetings, go to Service configuration > Virtual Receptions.

For more information on integrating Pexip Infinity with Microsoft Lync, see Integrating Microsoft Lync / Skype for Business with Pexip Infinity.

* Note that where this documentation refers to "Lync/SfB", it represents both Microsoft Lync and Skype for Business unless explicitly stated otherwise.