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lways listen before starting to dial, to besure the line is not in use. If you do not hearthe dial tone, inquire if the line is being used,If you do not receive an answer, replace thereceiver for a few seconds, then make anotherattempt to get your number. Successive clicks in your receiver indicate thatsomeone else is dialing. Wait until the clickinghas stopped, then tell the party that you haveinterfered with his call, and hang up. If someone interferes with your call, tell himthat the line is busy and request him to hang up.When he does so, hang up your receiver for afew seconds, and then begin your call again,
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