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Echo is required so the calling person can adjust his voice level so the audiable by the other person

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Posted by jahangir1983

Echo is required so the calling person can adjust his voice level so the audiable by the other person

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Posted by jahangir1983

no

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Posted by waqasahmad

missmach of voice frequencies i think but not sure..???

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Posted by waqqas1

echo is require so the calling person can adjust his voice level so the audiable by the other person

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Posted by niru_38