Lync Configuration with Security and Media Bypass Setup

You must do the following to finalize the configuration between Mitel MX-ONE and Skype for Business Server 2019 the following needs to be done:

Define PSTN Gateway in the Skype for Business Server 2019 Topology Builder

1. Open the Skype for Business Server 2019, Topology Builder, and define a PSTN gateway be used between Lync and MX-ONE.
2. 
   To define the PSTN gateway, expand Shared Components and right-click the PSTN gateway.
3. Click New IP/PSTN Gateway. The Define the PSTN Gateway FQDN dialog box appears.
   
4. Enter the FQDN or the IP address: specify the MX-ONE IP Address or FQDN and click Next.
5. Define the IP address: in this example, the default is retained. Click Next.
   

6. Define the root trunk:

   • • Trunk name: FQDN (MX-ONE FQDN)
     • Listening port for IP/PSTN gateway: 5061 (MX-ONE SIP TCP port)
     • SIP Transport Protocol: TCP
     • Associated Mediation Server: lync-2019-se.moon.galaxy
     • Associated Mediation Server port: 5067 (default)
7. Click Next.
   
8. Publish the Topology