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<br />E1 Camino Real Traffic u"gna1 System City of Redwood City <br /> TABLE 1 <br /> SAMPLE <br /> SUMMARY OF COMMUNICATION MEDIA OPPORTUNITIES AND CONSTRAINTS <br /> .. ..... ~ "'~~.:. ....~:~..:.. . ". ... '~::~:<.:~'~.~~\I~r.~~ ~¡~¡¡¡¡~¡~¡~¡~~~¡~¡~¡~~¡~¡¡¡¡¡~~~~~~1¡~¡~¡~¡~~~¡~i;:::;~:~:~~~~:~:~~:*m~<:::.~~.: :~I..~~.i1~lfl <br />1. Twisted Pair Ease of use Susceptible to EM! <br /> Inexpensive Low data rates <br /> Easy to repair Short distances <br /> Data only <br />2. Leased Telephone Lines Ease of use Cost of payments <br /> Availability monthly ¡annual <br /> Good for short periods Not City-owned system <br /> Data only <br />3. Coaxial Higher data rates than twisted Short and medium distance <br /> pair Moderate data rates <br /> Longer distances than twisted Susceptible to EM! <br /> pair <br /> Good for video and data <br />4. Fiber Optics Not susceptible to EM! Higher installation/repair costs <br /> Higher data rates <br /> Long Distances <br /> Cable has greater future <br /> potential capacity than other <br /> technologies <br /> Becoming cost effective <br /> Good for video and data <br />5. Radio (Spread WIreless-no cable plant or Availability of service during <br /> Spectrum) conduit required peak network usage cannot be <br /> guaranteed <br /> Not economical for outstation <br /> equipment which must be <br /> regularly polled <br /> Not a proven technology <br />6. Radio (Cellular) WIreless - no conduit required Available only on a dial-up <br /> Low cost application basis <br /> Proven technology Requires line-of-sight path <br />7. Radio (packet) Wireless - no conduit required Limited to a range of <br /> No line-of-sight required approximately 10 miles <br /> Low cost a lication <br /> Meyer , Mohaddes Associates, Inc. <br /> 27 <br /> r- <br />