 Typically, a PPG will have a local SMS queuing mechanism running locally that it BINDs to, and which in turn BINDs to the carrier's SMSC.This mechanism should allow for queuing in the event of an SMS infrastructure outage, and also provide for message throttling.Since a WAP Push message can be larger than a single SMS message can contain, the push message may be broken up into multiple SMS messages, as a multipart SMS.