The repositories have not been eradicated, just deprecated. They still exist.

The error occurred because they require https: now, so add the “s” to the protocol specifier in your /etc/apt/sources.list.d/freeswitch.list file and it should work. I tested it here yesterday by pasting the URL into a web browser and it prompted me to download the target file blob.

John Boteler

Bote Communications

From: FreeSWITCH-users <freeswitch-users-bounces@lists.freeswitch.org> On Behalf Of Mohammad-Reza Tazari
Sent: Thursday, 17 March, 2022 08:22
To: freeswitch-users@lists.freeswitch.org
Subject: Re: [Freeswitch-users] Problem with repository server?

Yes, however on Raspberry Pis we cannot switch to Bullseye yet, as can be seen here: https://freeswitch.org/confluence/display/FREESWITCH/Raspberry+Pi

-- Saied

On Wed, 16 Mar 2022 11:19:25 -0400  botelist@gmail.com wrote:
> 

> I believe you are following outdated instructions.
> 
> Debian Bullseye is the currently supported distribution, Buster has been deprecated.
> 
> https://freeswitch.org/confluence/display/FREESWITCH/Linux