search for: transmit_response

Hi, im a student and we are devloping a training sytem for radio operators (for ships, police, ...) at our university. So far we are using a simple own protocol for speech and data transmission, works well at a Lan. Now we are looking for a way to connect the devices over the internet. I did some very quick testing with Asterisk and PJSIP [1] and it looks very promising. Apart from the voice

I'm trying to use early-dial. Here, all hardware PBX have it. You dial numbers and, as soon as you have a matching dialplan entry, you get throught. I my Grandstream I enabled early-dial. And when I put exten=91,1,Milliwatt in my dialplan then it works as expected. Also, when I call other SIP or IAX phones it works. Hurray! But how can I get it working with external lines? In my