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ETACS use ___________ instead of SID (system identification number).

(a) Area identification number

(b) Analog identification number

(c) Digital identification number

(d) Dual identification number

The question was posed to me in an interview for internship.

Question is from AMPS and ETACS in chapter Wireless Systems and Standards of Wireless/Mobile

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The correct option is (a) Area identification number

Easiest explanation: For ETACS, area identification numbers (AIDs) are used instead of SIDs. ETACS subscriber units are able to access any control or voice channel in the standard.

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