Dear Ruben,
The *deliver_sm* used by SMSCs both for DLR and MO messages. Kannel can
handle it with sms service.

https://www.kannel.org/download/1.4.5/userguide-1.4.5/userguide.html#AEN4069

Below is a sample config for catching all incoming messages and sending
them to a HOST.

group                = sms-service
keyword            = default
catch-all            = true
accepted-smsc  = YOUR-INCOMING-SMSC-ID
get-url                = "http://HOST:PORT
/path/to/incoming?from=%q&to=%P&message=%b&udh=%u&charset=%C&coding=%c&smsc=%i"
max-messages  = 0


On Mon, Aug 30, 2021 at 10:21 PM Ruben Melikyan <r...@mobbis.am> wrote:

> Hi everyone,
>
> I am using  Kannel 1.4.5, have connections to several smsc and
> successfully receive/send sms messages from/to short codes. Everything is
> working like a charm.
>
> Recently I had connected to smsc which is trying to send incoming MO
> message via deliver_sm request.
>
> Of course kannel rejects such requests…
>
> I wonder if anybody faced with such issue and is it possible to properly
> handle such request via kannel?
>
> Thanks in advance.
>
> Best regards,
> Ruben Melikyan
>


-- 
Sincerely,

Sayed Hadi Rastgou Haghi

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