SIF allows users not only air faxes and emails but also air text messages (up to 160 symbols) on any mobile earphone and articulation messages on unconstipated / mobile phones in North America (using services of external providers). You don't demand a articulation recorder, type the message, it will be converted into articulation message and delivered to a destination earphone. This service (text-to-phone) is useful in the following situations: -make calls on phones from the places, where usage of mobile phones is not recommen ded / allowed (year rooms, courts, hospitals, libraries, ….) -allow shack with speaking problems air articulation messages from PC or mobile PDA without a demand to buy / wont a offprint device, such as "TextPhone" of BT. SIF also help users to economize money on sending faxes external your local area. You also may wont SIF for remote printing of your memos / ideas when you are on the road. SIF3 allows you to create contact lists with thousands of e-mails, fax, earphone numbers and to air personalized messages to shack on your contact lists.