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In page SMS:
"The first commercial deployment of a short message service center (SMSC) was by Aldiscon part of Logica (now part of CGI) with Telia (now TeliaSonera) in Sweden in 1993,[3] followed by Fleet Call (now Nextel)[4] in the US, Telenor in Norway[5] and BT Cellnet (now O2 UK)[6] later in 1993. All first installations of SMS gateways were for network notifications sent to mobile phones, usually to inform of voice mail messages.[citation needed]
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