Use UDH via API

Send binary messages or SMS with your own User Data Header (UDH) via our API. Only available for Direct SMS. | Parameter | Value | | -------- | -------- | | `udh` | User Data Heder. Please provide it as HEX value | | `text ` | Text message – if this is a HEX value and UDH is provided, we send this SMS as binary |