I have some difficulty in exposing my problem as it really is unusual, some day our supplier of telephony has changed the router and from that moment to be able to make a call you have to dial the number first 500 or any number ranging from 501 at 509 (but you can not call if you dial only 50), after dialing the 501 you hear the dial tone and then you can dial the desired number.
Before replacing the router was enough to dial the 5 followed by the number you want (you do not listen to the ringing tone).
What can I change on my VoIP PBX so that we can return to the previous situation? or maybe I have to change any parameter on the Patton device they are connected BRI lines provided by my carrier? also as you can see from the logs of Asterisk include a call to the 500 number but I called the number 081xxxxxx but nelo log is not.
The "notify" is very strange !