This is very interesting, because it's the reverse of a problem I've been asking about. Is there a way to trigger verto to send packets immediately after the DTLS handshake finishes, so FS can use them for "peer-reflexive" routing back? Clientside pcap's show that in some networks, verto/Chrome/network doesn't send anything to FS once the handshake is completed. ---------- Forwarded message ----------

From: Brian West <brian@freeswitch.com> To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org> Cc: Bcc: Date: Tue, 22 Sep 2020 10:25:34 -0500 Subject: Re: [Freeswitch-users] Playback does not execute until first RTP It's more than that, this is a standoff, each end is waiting for the other, so if you use execute_on_answer01=playback::silence_stream://500 it should get things moving.

/b

On Tue, Sep 22, 2020 at 8:29 AM Jurijs Ivolga <jurijs.ivolga@gmail.com> wrote:

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Hi,

This is strange, I remember some time ago I tested this with one of my buggy provider, which wasn't sending RTP until it received anything and after setting "disable-rtp-auto-adjust=true" in the SIP profile Freeswitch started to send RTP first and then SIP provider replied with RTP too.

Have you tried to put this in SIP profile configuration?

This was quite some time ago, so maybe I'm mixing it up.

Jurijs

On Tue, Sep 22, 2020 at 2:05 PM Oleg Belousov <obelousov@gmail.com> wrote:

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Hi. Thank you. Yes, I tried to set up that parameter in the profile as true, but that did not help. As far as I understand that is applicable for nated UAC, in my scenario there is no nat. -- obelousov.tel

On Tue, Sep 22, 2020 at 12:01 PM Jurijs Ivolga <jurijs.ivolga@gmail.com> wrote:

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Hi,

Have you checked this:

https://lists.freeswitch.org/pipermail/freeswitch-users/2018-April/129500.ht...

https://freeswitch.org/confluence/display/FREESWITCH/disable_rtp_auto_adjust

Please try:

disable-rtp-auto-adjust=false

With kind regards,

Jurijs

On Tue, Sep 22, 2020 at 11:43 AM Oleg Belousov <obelousov@gmail.com> wrote:

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Hi. Met issue with prompt play (in lua, preanswer mode) - for certain reasons freeswitch wait for RTP packet from UAC side, and only after that started to play prompt. If UAC does not send RTP, the script does not execute further. Is there a way to instruct Freeswitch to send RTP packets first by itself? -- obelousov.tel