4.3.9  

Internet Telephony User Connection 
 
The ITSP connection with individual station number registration is currently the most-widely available provider interface for private customers and medium-sized companies. This is a connection that requires every station number to register individually at the ITSP. Up to 30 ITSP client user IDs can be assigned. The ITSP client user IDs and the subscriber phone numbers are supplied by the provider once Internet telephony access is requested.