There are three ways to register using TIM
Every user can register with the e-mail address that has been assigned to them, as long as the corresponding password is correct. At TIM, each user requires a distinct e-mail address (system-wide)
It is also possible to register via username. In order for TIM to know for which client the user wants to register, this has to be provided as a prefix in accordance with the following form:
client/name
The name can be found in the client profile.
If the parameter default-client is selected in the tim.properties, TIM tries to run a standard registration for the client.