To send a Nokia ring tone, you must have a hex string value for the ring tone data. The hex string format represents two characters for each binary byte of ring tone data. Documentation of the ring tone data format is beyond the scope of this document.

For those who wish to send ring tones programmatically via the Now SMS/MMS Gateway, note that this form includes the following hidden fields which are included as URL parameters when submitting the message to the server:

UDH = 06050415811581

PID = 0

DCS = F7

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