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How Does The Sgsn Know Which Ggsn To Direct You To? |
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Answer» A mobile device is programmed with one or more Access Point Names which are commonly REFERRED to as the APN's. An APN CONSISTS of a fully QUALIFIED DNS name e.g. globalguideline.com When a GPRS device wants to talk to globalguideline.com, the SGSN does a DNS look up and resolves the name to the correct GGSN. You COULD have multiple APN's programmed into your phone so you are not limited to a SINGLE service or GGSN. A mobile device is programmed with one or more Access Point Names which are commonly referred to as the APN's. An APN consists of a fully qualified DNS name e.g. globalguideline.com When a GPRS device wants to talk to globalguideline.com, the SGSN does a DNS look up and resolves the name to the correct GGSN. You could have multiple APN's programmed into your phone so you are not limited to a single service or GGSN. |
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