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Technology Stocks : Qualcomm Moderated Thread - please read rules before posting

QCOM 174.01

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Nov 14 9:30 AM EST

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To: Ramsey Su who wrote (19923)	3/5/2002 8:22:42 AM
From: Eric L	Read Replies (2) of 196650

Ramsey, << So basically, if I am a China Mobile sub and decided to visit Korea, I need to rent a handset in Korea but use my own SIM card? (and vice versa?) Or if I am a frequent traveller between the two countries, I would just buy both type of handsets? >> Yes. That is 'plastic roaming'. << Isn't this the foundation of the GSM1X overlay plan? >> No. the foundation of the GSM1X overlay is that a carrier that implements it can reuse (not replace) the GSM MAP core network and all network peripherals and replace the RAN with 1xRTT. << In comparison, if I am a DT T-mobile subscriber in Europe and decided to visit USA, would my GSM handset work in the VoiceStream network without a SIM card? >> Many (not all) GSM handsets are capable of that, but not without the SIM which is requisite for authentication to any GSM network. Without a SIM only emergency calls can be made (911 in US). Phones that can roam internationally are generally referred to as 'WorldPhone's. They are multi-band, dual-mode 900/1900 or tri-mode 900/1800/1900. << What percentage of handsets in the world has SIM slots? >> Better than 65%. All GSM handsets. Some iDEN. - Eric -

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