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	1. Implemented AuthenticationParameters class for easy storage and using authentication parameters: MobileID, SRES, RAND, CKSN and KC. 2. Added functions for registerIMSI and authenticate to MobilityManagement. 3. Added authentication procedure to LocationUpdatingController. 4. Modified sip_register function in SIPMessage, added IMSI, SRES, RAND parameters to support authentication. 5. Modified Register and unregister functions in SIPEngine, added AuthenticationParameters. 6. Added new configuration parameter GSM.Encryption to OpenBTS config database. It allows enable or disable encryption.
This directory contains control-layer functions for the access point. Most GSM L3 and VoIP messages terminate here. Everything in this directory should be in the Control namespace. Components: RadioResource -- Functions for RR procedures (paging, access grant) MobilityManagement -- Functions for MM procedures (CM service, location updating) CallControl -- Functions for CC (mobile originated, mobile terminated) SMS -- Funcitons for text messaging. SIP and RTP UDP/IP Port Assignments Component Protocol Port(s) Asterisk SIP 5060 Zoiper SIP 5061 AP/BTS SIP 5062 Zoiper RTP 16384-16385 Asterisk RTP 16386-16483 AP/BTS RTP 16484-16583