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)



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