[Freeswitch-users] Ring Group with Video Preview

Jerry Kendall Jerry.Kendall at BishopHosting.com
Tue Dec 27 18:58:26 UTC 2022

Hi Antony,

Yes, it does work with one device in the ring grouop.

In fact, if I toogle or change the devices within a ring group it works regardless of which device - as long as it's only one device in the ring group.
Once there are more than a single device, the the video preview only works on the first device to reply with a '183 progress...'
All the other devices get a cancel as FS gets the 183 and cancels all other devices... even if they send a '183 progres...'

if I set 'bridge_early_media, then all devices will accept the video however, the video is simply a blank screen with on content


On 12/27/2022 12:40 PM, Antony Stone wrote:
> On Tuesday 27 December 2022 at 18:32:58, Jerry Kendall wrote:
>> Does anyone have experience with ring groups that show a preview (on all
>> video capable phones) of a door phone?
> I somehow doubt that it is possible to send a preview to a ring group.
> That's verging on video-conferencing, after all.
>> I have Fanvil (V67/I53W) and Grandstream video phones (GXV3480/GXV3240)
>> connected to Fanvil(I64) and Axis(A8207) door phones.
>> the door phones are able to send preview and the phones are able to receive
>> previdw but the screens only show a black image - no live video.
> Have you tried reducing the configuration to a simple setup of one door phone
> and one video phone, to see whether a preview can be sent/received like that?
> If that works, do a packet capture and look at the SDP part of the SIP
> communication, and then compare with the same thing using a ring group.
> Antony.

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