- The client sends a SMS through the Internet portal or the IT application sets by default by the SMS operator. The SMS is sent through the interconnection of SMS operator with the mobile operator.
- When SMS is received, the mobile operator notifies to SMS operator the delivery of SMS in the mobile of destination.
- The SMS operator generates the acknowledgment of receipt and sends it to the Certification Service to stamp the timestamp, obtaining a signed and a stamped digital document.
- This acknowledgment of receipt is sent to the client by e-mail.