SMS Standards

["Glen Kent" <glen.kent () gmail com>]

Hi,

Apologies in advance since this is off-topic. However, posting in on
nanog since i am confident that we will have some experts who would be
able to guide me here.

I want to study the standards (RFC equivalent) for sending and
receiving SMSs. Any ideas on what kind of protocol runs between a
mobile phone and a SMS center (SMSC)?

Thanks,
Glen