For the SMS functionality to work, a so-called SMS Gateway is required. Skyline recommends SMSEagle mainly because the DMA core implements its API calls and provides a configuration UI under System Center -> Mobile Gateway (note this is a quite short and possibly naive explanation).
However, what if a company already owns an SMS gateway (telco operator) or for some reason needs to source from another vendor and creating a "native" driver is not an option?
Is it already possible within DataMiner or is there already an API gateway driver (or application) that could translate the SMSEagle to SMS API calls for another vendor?
Note that the idea is to configure DataMiner as if an SMSEagle device is present in the network and I'm not referring to a driver that would gather data from the Correlation engine (for example) and trigger an SMS element to execute an API call.
What Ben suggests (the email solution) is probably going to be the most straight forward option. As far as I now, there is no existing way of translating the SMSEagle API calls to another SMS gateway API. The only way to get the full SMS functionality in DataMiner is to have a supported device, or request the support for a new device type.