In manager.conf file I created a user profile by which clients can access Asterisk server as listed below;
secret = cbus123
read = system,call,log,verbose,command,agent,user,originate
write = system,call,log,verbose,command,agent,user,originate
Using above configuration clients are successfully access the asterisk and forward its parameters to asterisk. The thing I would like to know how can I keep track from which client does asterisk receives request from? Like client A, B and C need to know from which clients the request was made to asterisk.