home *** CD-ROM | disk | FTP | other *** search
/ Developer Source 18 / Developer Source Volume 18 (I-MODE Publications, Inc.)(2000).iso / ntvar / jun97 / kessf102.gif < prev    next >
Graphics Interchange Format  |  1998-02-10  |  80.7 KB  |  584x377  |  4-bit (16 colors)
   ocr: USING 56KBPS MODEM TECHNOLOGY Upstream diredion (33.6/40Kops) uu ADC Digital a telephone % - NDAC % o network - Host 56Kbps 56Kbps Host Client modem Client-modem Downstream direction(56Kbps) LLL =E Digital waves =- Sine waves Figure 2: Tbe. dient bost sends # digital bit StTEAT (digital auves) to the 56KVs dient moden, abieh, in aern, reRtes. an. analog sigual (sme maves). When tbe. analog signal reacbes tbe. digital, portion of the netuork, tbe: netacork performs # PCMADC. The rondtng digital signal is sransmitted through tbe digital, pbone netaork to: tbe 56Klps. serter: moden and. bost. Tbe ...