search for: rfc2976

Hi there I have a Welltech Wellgate SIP device and I want to be able to do a supervised transfer. I've read that in order to do that I have to use flash hook. The problem is just that I can't flash hook with this device. I'm in contact with the developer of the SIP device but don't know what to tell him in order to get him to fix this. What is happening when you flash hook, I

Hi, Using SIP methods and options, is there any way for a callee to send the caller a short text message when the call is establishing ? Scenario is : Alice and Bob's SIP phones are registered to an Asterisk server. Alice calls Bob : an INVITE message is sent to Bob's phone Bob is replying : a 200 OK message is sent back to Alice with a short text included ("Welcome to BoB