https://www.telecompaper.com/news/china-unicom-uses-schlumbergersema-cdma-solution--348125
China Unicom uses SchlumbergerSema CDMA solution - Telecompaper
China Unicom is using an end-to-end CDMA telecoms solution from SchlumbergerSema which is convergent and compatible with GSM.
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https://www.telecompaper.com/news/hutchison-3g-chooses-schlumbergersema-security-platform--349499
Hutchison 3G chooses SchlumbergerSema security platform - Telecompaper
Hutchison 3G has selected SchlumbergerSema, Schlumberger subsidiary, to provide the Entrust software-based security platform for the former's 3G services....
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https://www.qualcomm.com/news/releases/2001/08/qualcomm-cdma-technologies-schlumbergersema-and-samsung-demonstrate-cdmagsm
Qualcomm CDMA Technologies, SchlumbergerSema and Samsung Demonstrate CDMA/GSM Roaming Using...
SAN DIEGO -- August 14, 2001 -- Qualcomm Incorporated (Nasdaq: QCOM), pioneer and world leader of Code Division Multiple Access (CDMA) digital wireless...
qualcommcdmatechnologiesschlumbergersemasamsung