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I think EGSM just refers to EDGE (Enhanced Datarates for GSM Evolution), EGPRS.

A bit faster - 2 to 3 times - packet data connectivity (than "regular" GPRS).EGSM is an expansion of GSM. The EGSM operating frequency extends to 10MHz lower than the GSM 900 band.

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Posted by jahangir1983

I think EGSM just refers to EDGE (Enhanced Datarates for GSM Evolution), EGPRS.

A bit faster - 2 to 3 times - packet data connectivity (than "regular" GPRS).EGSM is an expansion of GSM. The EGSM operating frequency extends to 10MHz lower than the GSM 900 band.

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Posted by jahangir1983

There's not really much difference between the two. Probably the biggest difference is that GSM can be used more if you plan on traveling ...
more detail
forums.intomobile.com/general-mobile-discussion/8578-what-difference-between-gsm-mobile-cdma-mobile.html - 30k -

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Posted by waqasahmad

In GSM, we have 124 ARFCN
In EGSM, we have 174 ARFCN

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Posted by Hash007

I think EGSM just refers to EDGE (Enhanced Datarates for GSM Evolution), EGPRS.

A bit faster - 2 to 3 times - packet data connectivity (than "regular" GPRS).EGSM is an expansion of GSM. The EGSM operating frequency extends to 10MHz lower than the GSM 900 band.

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Posted by sagitraz

Both are using 900 frequency but
Range of GSM is:
uplink 890-915
downlink 935-960

Range of EGSM is:
uplink 880-915
Downlink 925-960

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Posted by HamidAliKhan