Hello, if you follow the sr-dev mailing list, you may have noticed some new features added in master branch (for the 3.1.0). I will send more details about each, now: remote user registration. The uac module can register in behalf of users to remote servers. The user details (credentials, local and remote username/domain) are loaded from database. The module sends registration at start-up and then refreshes just before expiration time. If the REGISTER is challenged for authentication, uac will re-send the REGISTER with proper credentials. A typical scenario is when users have accounts to many voip providers and they want to receive calls to those accounts via your sip server (inbound traffic). Of course, the user has to give details such as username/password to you. Other use case can be dynamic interconnection/peering. you can imagine a scalable solution where you have a traffic dispatcher and worker servers. When an worker becomes active, it registers to traffic dispatcher for receiving traffic... and examples can continue. Hope will help you in various cases! Readme at: http://sip-router.org/docbook/sip-router/branch/master/modules_k/uac/uac.ht… SQL to create the mysql table is in utils/kamctl/mysql/uac-create.sql Cheers, Daniel -- Daniel-Constantin Mierla * http://www.asipto.com/