Forum Discussion
Adding Contacts Outside My Organization
Both companies must have set permissions Skype for Business so that they can connect with users from other organizations.
In the settings admin panel is a section devoted to contacts with users outside the organization.
Just that both sides will set up a permit and go.
Regards.
So in the case there are multiple things we need to look for. Firstly we need to ensure that External Communication in Skype for Business should be enabled for both the domain where we are trying to communicate with. We need to ensure that the external communication is enabled on both the domain and we are allowing the external communication for both the domain.
Secondly we also need to ensure that we have the correct SIP address for the second user account to which we are trying to connect with. After sometime we would see presence unknown for the user