How can I transmit the mobile phone number as sender number when sending SMS?

When sending SMS messages, can the respective mobile phone number of the employee be transmitted as sender number?  

The transfer of the sender's phone number is basically only possible when using the HTTP provider. When you select the rate (gateway) of the HTTP provider, the system lists whether it is possible to transfer the sender telephone number. Bear this in mind when selecting the rate. 

Our recommended provider Mes.Mo AnySms offers this option with the proposed tariff (Gateway 28).