About Skype for Business servers

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

Outbound calls are made from Pexip Infinity when:

• a conference participant uses a Pexip app to add another participant to the call
• the administrator manually dials out to a participant from a Virtual Meeting Room
• a participant is automatically dialed out to from a Virtual Meeting Room
• a third party uses the API to place a call to a participant
• the Infinity Gateway is used to interwork a call.

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

Within an on-prem Skype for Business environment, you must then associate a specific SfB server with a System location, Call Routing Rule or Virtual Reception to instruct Pexip Infinity to use that 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 Skype for Business deployment, you must ensure that a Pexip Infinity location is not configured to route calls to a specific SfB server. This is to ensure that each Conferencing Node uses DNS to locate an appropriate SfB system via which to route outbound calls.

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

The available options are:

Option	Description
Name	The name used to refer to this SfB server in the Pexip Infinity Administrator interface.
Description	An optional description of the SfB server.
Address	The IP address or FQDN of the SfB server. This can be a Front End Server or Director; it must not be an Edge Server.
Port	The IP port on the SfB server to which the Conferencing Node will connect. Default: 5061.
Transport	The IP transport used to connect to the SfB server. Default: TLS.

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

For more information on integrating Pexip Infinity with SfB, see Integrating Skype for Business with Pexip Infinity.