Testing - 1.what do you mean DUMP call?2.What do u mean by DTMF string? When it is needed? How does it work in

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1.what do you mean DUMP call?
2.What do u mean by DTMF string? When it is needed? How does it work in a SIP phone

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Last Update: January 20, 2007 Asked by: shibanee Sankar Sahoo

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