Version 7.2 323 Mediant 800B Gateway & E-SBC
User's Manual 15. Services
New-CsTrustedApplicationPool -Identity audcsbcgw.example.com -
Registrar skypepool.example.com -Site Portland
3. Add the Trusted Application (Presence) to the Pool
New-CsTrustedApplication-ApplicationId <String> -
TrustedApplicationPoolFqdn <String>
-Port <Port Number>
where:
• ApplicationId is the name of the application
• TrustedApplicationPoolFqdn is the FQDN of the trusted application pool
• Port is the port number on which the application will run (5061)
For example:
New-CsTrustedApplication -ApplicationId MSpresence –
TrustedApplicationPoolFqdn audcsbcgw.example.com -Port 5061
Make sure the port number matches the port number configured on the device.
4. Enable and Publish the Skype for Business Server 2015 Topology
Run the following cmdlet to publish and enable your new topology:
Enable-CsTopology
15.9.2 Configuring the Device for Skype for Business Presence
The following procedure describes how to configure the device for notifying Skype for Business
Server of presence status of Skype for Business users when making and receiving calls using
third-party, endpoint devices.
To help you understand the configuration, the following lists in chronological order the main
processing steps:
1. The device receives an incoming call.
2. The device uses a Call Setup Rule to perform LDAP queries on the Microsoft Active
Directory to retrieve Skype for Business usernames (Request URIs) for the corresponding
calling (source) and/or called (destination) number. For SBC, the Call Setup Rule is
associated with the classified source IP Group (in the IP Groups table). For Tel-to-IP
Gateway calls, the Call Setup Rule is associated with the destination IP Group (in the Tel-to-
IP Routing table).
3. The device routes the call to the required destination, according to the normal routing rules.
4. When the call is connected, the device sends a SIP PUBLISH message to Skype for
Business Server, indicating that the users' presence status is now "On-the-Phone".
5. When the call ends, the device sends another SIP PUBLISH message to the Skype for
Business Server, clearing the users' "On-the-Phone" status (the presence status changes to
what it was before the call was connected).
To configure the device for Skype for Business presence:
1. Enable the Microsoft presence feature: open the SIP Definitions General Settings page
(Setup menu > Signaling & Media tab > SIP Definitions folder > SIP Definitions General
Settings), and then from the 'Enable MsPresence message' drop-down list, select Enable:
Figure 15-63: Enabling Microsoft Presence Integration
2. Configure a TLS Context (TLS certificate) for secured communication (mutual authentication)
between the device and the Skype for Business Server (see Configuring TLS Certificate
Contexts on page 113).
3. Configure a Proxy Set to define the address of the Skype for Business Server (see
Configuring Proxy Sets on page 380). Make sure you configure the following:
• 'TLS Context Name': Assign the TLS Context that you configured in Step 2 (above).
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