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Date: 2009-08-23 09:55:02Oral communication Telephone call Teletraffic Dial tone Conference call Telephone Business telephone system Call forwarding Rotary dial Telephony Electronic engineering Computer telephony integration | iDCSDigital_QRG.qxp[removed]Add to Reading ListSource URL: www.micommtech.comDownload Document from Source WebsiteFile Size: 237,32 KBShare Document on Facebook |