A major problem with dealing with Active Directory Internal data in a network environment is the so-called delegation latency. Processes and entities must typically have Admin. privs for any meaningful data access or manipulation. This typically means that an access token or some other object or entity must be transported across the network to the Primary Domain Server for any meaningful access to the AD internal data structures.

IIS-OTP solves this problem by putting an Admin. privileged process (service) running on the Primary Domain Server. Rapid Communications achieved via encrypted UDP packet exchange. The IIS-OTP Service accesses ONLY that part of the AD intern data structures that are normally unused. THE scheme is shown in the following figure:
 
 

In order to deliver SMS messages tot he user's cell phone. IIS-OTP must acces the carrier's internet SMTPgateway Tthis is easily done by accessing any standard SMTP server. All major carriers maintain such a gateway. they accept delivery of email from any standard email accounts of the type provided by Dailup Internet service providors. This is how Microsoft Outlook sends email. The delivery sequence is shown in the following diagram: