GSM: Historie van GSM (4/4) 2G Digital Cellular Networks PDC: IS-95:
{"Image DocumentName": "GSM: Historie van GSM (4/4) 2G Digital Cellular Networks PDC: IS-95:", "Image ImageDescription": "Since 1993/94. Freq\u2019s : 800, Usage : Japan. Appox. 43M users. GSM: Since Freq\u2019s : 900, 1800, Usage : Global. Approx. 140 countries. Approx. 650M users. Huidige trend is om wereldwijd over te gaan naar GSM-technologie. IS-95: CDMA. Sincs Freq\u2019s : 800, Usage : Amerika, S. Korea. Approx. 35M users. IS-136: Digital AMPS. Since 1991/92. Freq\u2019s : 800, Usage: N/Z-Amerika. Approx. 15M D-AMPS. Approx. 60M AMPS. Mobiele Netwerken.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}