baresip is also something to consider
https://github.com/alfredh/baresip

Regards,

Nuno

On Thu, Mar 26, 2020 at 8:56 AM Daniel-Constantin Mierla <miconda@gmail.com> wrote:
I looked a bit at the pjsua recently (and used it along the time), but I
couldn't find an option to do echo mode. Are you aware if it can be done?

Cheers,
Daniel

On 26.03.20 09:08, Alexey Vasilyev wrote:
> I’m using pjsua in test suite. It is lightweight, it can be controlled by telnet.
> It is easily can be built for Alpine and run in the docker. Docker image size is 19 MB.
> It can play file when calling, it can answer and play file, it can record call.
> And fully supports IPv4, IPv6, TLS/TCP/UDP, SRTP so we can simulate a lot of cases.
>   
> -----
> Alexey Vasilyev
> alexei.vasilyev@gmail.com
>
>
>
>> 26 Mar 2020, в 08:43, Daniel-Constantin Mierla <miconda@gmail.com> написал(а):
>>
>> Hello,
>>
>> wondering if anyone here is aware of a lightweight sip app that can
>> answer a call, play some file and/or do echo mode, mainly targeted at
>> using it for basic sip routing and call testing. Of course I know that
>> Asterisk and FreeSwitch (or even SEMS) can do that, but they have many
>> dependencies, requiring quite some resources to run them, so I thought
>> maybe someone here figured out different solutions, eventually cli based
>> apps like pjsua or baresip. GUI apps for Linux are also fine if they can
>> be configured for such behaviour.
>>
>> Cheers,
>> Daniel
>>
>> --
>> Daniel-Constantin Mierla -- www.asipto.com
>> www.twitter.com/miconda -- www.linkedin.com/in/miconda
>>
>>
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--
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda


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