FYI: Joshua Colp already replied to my initial post of this message in asterisk-app-dev. he suggested to move it here (asterisk-users)
he so far stated, that early media/Video should theoretically work... but probably no one tried this in recent times... looking foreward to receive further information, thanks! On Wed, May 7, 2014 at 9:09 AM, Fronc Hias <[email protected]> wrote: > Hi All, > > I've been looking for information on how to use asterisk and early media > to allow for a video-preview of the caller at the callee's phone for > days... but I haven't been too successful :( > > I found that there seems to be a company "2N Helios IP" which claims > (youtube-video) that "their" SIP server is able to provide early video > (using a Grandstream 3157v2 with "preview" enabled), but I would like to > have this with asterisk... > > I'm currently using asterisk 12.2.x. > I tried with all kinds of combinations of "prematuremedia" and > "progressinband" in sip.conf and many different > dialplan-extension-"scripts" but to no avail... > > sniffing with wireshark shows me, that the caller (doorstation) is sending > H.264 video but the RTP video stream is not passed on to the callee by > asterisk. (establishing a direct-video - without preview - call does work > of course) > > is it at all possible with a default asterisk installation? maybe using > chan_pjsip instead of chan_sip? > > do the "prematuremedia" and "progressinband" properties only apply to > audio and not to video? > > I think this feature is essential for a sip-device which is used as a > door-station... > > any information / idea is highly appreciated! > thanks, > Fronc >
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