• Calling in Webex—Select this option if you want users to make calls directly in Webex using one of these call services: Webex Calling, Webex Calling (formerly Spark Call), or Hybrid Calling.

• Calling in Webex (Unified CM)—Select this option if you want users to make calls directly in Webex registered to Unified CM as a softphone for calling features, such as Hold and Resume. For more information, see the Deployment Guide for Calling in Webex (Unified CM at https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cloudCollaboration/wbxt/ucmcalling/unified-cm-wbx-teams-deployment-guide.html.

  Choose which domain gets applied to users in Webex:

  • Use my organization's domain —By default, your organization's domain is applied to all users in Webex.

  • Use a UC Manager Profile for Calling —If you've created a UC Manager profile , you can select it from here so that it gets applied to all users in Webex.

• Webex Calling app —Select this option if your organization has a subscription to Cisco Webex Calling and you want to allow users to make PSTN calls using the Webex Calling app. When users make PSTN calls in Webex, the Webex Calling app launches and is used to make the call.

• Cisco Jabber app —Select this option if your organization has Cisco Unified Communications Manager deployed and you want to allow users to make PSTN calls in Cisco Jabber. When users make PSTN calls in Webex, the Cisco Jabber app launches and is used to make the call.

• Third-Party app —Select this option if your organization has a subscription to a third-party calling app and you want to allow users to make PSTN calls using that app. Typically, the Webex users in your organization have free calling for this option. When users make PSTN calls in Webex, the third-party app is launched and used to make the call.

Users must have the corresponding application installed to make PSTN and extension calls from Webex. Make sure you let people know what choice you make and if another app is used to make calls.