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Sample of sending UDP packet using WiFi module

Hi,

is it possible to send UDP packets using the WiFi module?

I am trying with this:

  https://www.tinkercad.com/things/lRGdVnaaId2-arduino-sip-phone/editel

but I get an "ERROR" reply when I tried to send something.

I tried to send to open SIP servers in the internet and to WiFi own local ip address but all failed.

I also tried with a SIP server in the internet that I control but nothing arrived at it.

If this is possible, can you show me sample code?

Thanks and Regards,

Takeshi

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