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Description: 化学元素周期表，包含所有已知元素，包括熔点、沸点、读音、英文名称等信息-Periodic Table of the Elements include the new Elements, and include name, melting point,boiling point,spelling.
Platform: |
Size: 47146 |
Author: David |
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Description: 化学元素周期表，包含所有已知元素，包括熔点、沸点、读音、英文名称等信息-Periodic Table of the Elements include the new Elements, and include name, melting point,boiling point,spelling.
Platform: |
Size: 47104 |
Author: David |
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Description: Integrated DTMF reciver data sheet iso2-cmos ic with internal gain setting for british telecom or cept spec.
Platform: |
Size: 81920 |
Author: amir |
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Description: Global System for Mobile (GSM) is a second generation cellular standard developed to cater voice services and data delivery using digital modulation
Developed by Group Spéciale Mobile (founded 1982) which was an initiative of CEPT ( Conference of European Post and Telecommunication )
• Aim : to replace the incompatible analog system
• Presently the responsibility of GSM standardization resides with special mobile group under ETSI ( European telecommunication Standards Institute )
Full set of specifications phase-I became available in 1990
• Under ETSI, GSM is named as “ Global System for Mobile communication “
• Today many providers all over the world use GSM (more than 135
countries in Asia, Africa, Europe, Australia, America)
• More than 1300 million subscribers in world and 45 million subscriber in India.
-Global System for Mobile (GSM) is a second generation cellular standard developed to cater voice services and data delivery using digital modulation
Developed by Group Spéciale Mobile (founded 1982) which was an initiative of CEPT ( Conference of European Post and Telecommunication )
• Aim : to replace the incompatible analog system
• Presently the responsibility of GSM standardization resides with special mobile group under ETSI ( European telecommunication Standards Institute )
Full set of specifications phase-I became available in 1990
• Under ETSI, GSM is named as “ Global System for Mobile communication “
• Today many providers all over the world use GSM (more than 135
countries in Asia, Africa, Europe, Australia, America)
• More than 1300 million subscribers in world and 45 million subscriber in India.
Platform: |
Size: 621568 |
Author: Aanandha Saravanan |
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Description: This class provides methods to play DTMF tones (ITU-T Recommendation Q.23), call supervisory tones (3GPP TS 22.001, CEPT) and proprietary tones (3GPP TS 31.111). Depending on call state and routing options, tones are mixed to the downlink audio or output to the speaker phone or headset.
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Size: 4096 |
Author: zerjenron |
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Description: Global system for mobile telecommunication (GSM)
comprises the CEPT-defined standardization of the
services, functional/subsystem interfaces, and
protocol architecture, based on the use of worldwide
standards produced by CCITT and CCIR, for a pan-
European digital land mobile system primarily intended
to serve users in motor vehicles. The digital mobile
radio networks, for which GSM represents the European
standards, provide powerful message signaling
capabilities that facilitate and enhance
roaming, compared to the first generation analogue
systems, through automatic network location detection
and registration.
Platform: |
Size: 73728 |
Author: aliaskari
|
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