Change From Audio to Video Call using Asterisk server and Grandstream Phones

Asterisk Asterisk SIP
1

Hello,

I have an office setup which has an asterisk server and 2 grandstream phones connected. I am able to make audio calls between the two phones but whenever i want to switch to video call while the audio call is on, it doesn’t switch.

Anyone experienced this before or have idea how this can be resolved.

Thanks

2

Did the phones negotiate a video streams at the start? Asterisk used not to be able to add streams duringa re-INVITE and I beleive that is still the case.

3

Asterisk 16 with PJSIP may work better in that regard, but it’s not a scenario that has been tested so it still may not.

4

No. I started with a voice call, then switch to video call. But when i try to switch to video call, it writes “Video invitation fail”

5

I use asterisk 13.8.3 version.
How do i configure pjsip on the asterisk… can you u help me with a tutorial.

Thanks

6

Asterisk 13 does not have the new stream support, so I don’t know how well (or even if) it would work. 16 would have a better chance as mentioned. The wiki[1] has lots of information on configuring PJSIP.

[1] https://wiki.asterisk.org/wiki/display/AST/Configuring+res_pjsip

7

Thanks.

I am doing the upgrade and and will try the pjsip functionality…

Will get back to you as soon as i finish.

8

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