Hello guys, I am here again, sorry for borring but I in freeze here! : ) Just for resuming some doubts: + The extension.conf file: has a [general] context for "general" configurations, and a [global] context for global variables. The another context [any_name] are context for "handle the calls", for example: exten => 1001,1,Dial(SIP/1001@10.11.2.121,30) means, when the 1001 is calling send the call to device 10.11.2.121 using the SIP protocol and get the phone 1001 (this call is performed by 30 sec). Its true?!?! + The h323.conf file: has a [general] context for "general" configurations, including the possibility to get a gatekeeper, or not. If a had a gatekeeper, I not need to create another context for the users, if I don't had a gatekeeper I need to create another [context] for the other users?? This context have type, context (that match with the context of extension.conf file), prefix, host and incominglimit??? (Why and How use thems??) + The sip.conf file: Either has a some purpose [general] context, and have another [context] where I need to configure the devices that will be register on the asterix?!?! And I have the option to redirect some devices to register in another SIP server?!?! Sorry by the bible of questions. But I cannot configure the asterix to get the calls and extension thems alone, I just can do this with a gatekeeper!!!! Thanks for the help. Giscard _______________________________________________________ Yahoo! Mail agora com 100MB, anti-spam e antiv?rus gr?tis! http://br.info.mail.yahoo.com/