Why For 2G/3G on mobile phone or tablet the “Dial Number” is not required ?

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aneesholv

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Why we not required Access number / Dial number in mobile phone GPRS setting ?
For 2G/3G on mobile phone or tablet the “Dial Number” is not required. but in 2g/3g dongle or datacard there is a access number / dial number is required in their settings. Why this difference ? Can you explain


Regards
Aneesh
 

Packet oriented connection (GPRS, EDGE, UMTS, HSDPA) doesn't use dial numbers. It uses a service access point (APN) and optionally username and password. Mobile network service providers usually set a default APN, so it must not necessarily be specified.

Some modem drivers use a dummy dial number like *99# or so to select packet communication. But it has no network related meaning.
 

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