Cellular digital packet data
Define Cellular digital packet data?
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Cellular Digital Packet Data (or CDPD) was a wide-region mobile data service that employed unused bandwidth normally employed by AMPS mobile phones among 800 and 900 MHz to transfer data. Speeds upto 19.2 kbit/s were possible. The service was stopped in conjunction with the retirement of the parent AMPS service; this has been functionally substituted by faster services like EV-DO, 1xRTT, and UMTS/HSPA.
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HELLO protocol: The HELLO protocol employs time rather than distance to find out optimal routing. This is an option to the Routing Information Protocol.
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XTND XMIT: Irrespective of the mail retrieval protocol, typically email clients utilize the Message Submission flavor of the Simple Mail Transfer Protocol (SMTP) to send messages. POP3 have a protocol extension, called as "XTND XMIT” that let cl
What is WAP Push: WAP Push has been included into the specification to permit WAP content to be pushed to mobile handset with least user intervention. The WAP Push is fundamentally a specially encoded message that comprises a link to a WAP address.&nb
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