Like instant messaging, SMS transmits the sender's message to the recipient immediately. It also stores and forwards messages later if a recipient's phone was off when the message was initiated. SMS pricing differs by carrier, which may charge a flat fee per month, a charge per message or include it in a service plan.
Traveling over a control channel separate from the voice channel, SMS was introduced in the GSM system in Europe and migrated worldwide to all cellphone carriers (see GSM). Whereas SMS is text only, MMS supports multimedia (see MMS).
(2) (Systems Management Server) Systems management software from Microsoft that runs on Windows NT Server. It requires a Microsoft SQL Server database and is used to distribute software, monitor and analyze network usage and perform various network administration tasks. See SMS Installer.
![]() | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2009 The Computer Language Company Inc. All rights reserved. |
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