<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-family: Calibri, sans-serif;"><div>Hello list,</div><div><br></div><div> I wonder if someone could give me a hint on how I go about working out when applications can be used <u>after</u> bridging A & B legs?</div><div><br></div><div>I have spent a fair amount of time googling the list, but not yet stumbled into how it is determined if an application can be invoked mid call. Some can and some can’t but I have yet to work out the logic that decides this?</div><div><br></div><div>The application in question is “drop_dtmf” but the question is more general. Also how does one work out if it should work with SIP-Info instead of 2833?</div><div><br></div><div>Thanks</div><div>Magnus</div><div><br></div></body></html>