Your system administrator must enable Jabber Calling.
You can make a call to another Cisco Jabber client using Jabber Calls. Unlike with other types of phone calls when you use Jabber, there are some differences using Jabber Calls, such as:
You can make a Jabber Call with only one contact at a time.
When you are on a JabberCall, if you call another contact, then your current call disconnects first.
When you start a Jabber Call with a contact and your contact starts a Jabber Call with you at the same time, your call is connected and you don't get any incoming call notice.
To make a Jabber Call, simply select the Call icon menu from active conversation windows or from your contacts list, and select the Jabber Call option.
Dial Numbers from Active Conversations
You can enter a phone number into a converation window and it will appear as a clickable link. You and the person you are chatting with can click on the number and make a Jabber Call.
Phone numbers must be at least four digits long, and if it is preceded by a + must be at least 11 digits long.
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