MTN - Regulars - Global SMS Messaging
SMS ITALIA FREE GATEWAY per CELLULARE GSM - GRATIS -
SMS - Send a message to my GSM mobile telephone!!
SMS ITALIA - Servizio Brevi Messaggi di testo GRATIS in tutta Italia
The Amigenius GSM SMS Service
SMS by morocutti & ViP
a&p Yellow Page - Telecom, Omnitel ...
GSMService
Overview of GSM, by John Scourias