ProSBC:Skype for Business S4B TLS


This Configuration Note describes how to set up Telcobridges ProSBC for interworking between ITSP’s SIP Trunk and Skype For Business Mediation Server using a TLS connection.

NOTE: SIP Trunk use G.711 in this test. There is no transcoding available.


  • ProSBC devices must be installed as described in their respective with minimum release 3.1.129. Release 3.0.x is not supported for TLS connections installation guides.
  • Skype for Business 2015. For additional information on Skype for Business 2015, visit Microsoft

Example Environment

Skype Environment.png

ProSBC Configuration for S4B

(Step 1)
Create IP Network
(Step 2)
Create Protocol Stack
(Step 3)
Create Call Route


Call Trace Test Call TBReport Advanced Troubleshooting of ProSBC