If you don't want people to see when you're using Jabber, you can stop sharing your status. Other users won't see whether you're active, away, on a call, and so on. When you're not sharing your own status, you won't be able to see anyone else's status.
Jabber Team Messaging —This article describes features that apply only to Jabber Team Messaging.
Click on your proflie picture and select Settings or Preferences.
Clear the check box under Show Statuses to stop showing your status.