I have configured the Grandstream GXW-4104 and now i am able to get phone call to my extension but i am unable to dail out to any pstn number. How can i get the dailtone ? how to configure which number to dail before using pstn number
Any dialtone will come from the VoIP device you are using to place a call, you will not hear PSTN dialtone. Most VoIP sets and ATAs will not provide dialtone unless successfully registered to a server. When you dial an outside number,3CX will attempt to do a match to your outbound rules. You must create those in order for 3CX to know where (what trunk, and how to manipulate digits, if required), to route the call.