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Calls from Internet users , ( that is , customers of the ISP ) to the ISP will be treated exactly like any other switched telephone call , except for the fact that modems are placed at each end of the line ( i.e. by the customer ’ s telephone and at the ISPs modem port ) to render the data stream capable of being transferred over the circuit-switched PSTN . " It was , Skilling went on approvingly , " exactly the kind of behavior that will continue to drive this company forward . It is unfortunate when things of that nature occur . The Cisco Catalyst ® 3750G-24PS switch is a member of the Cisco Catalyst 3750 Series , an innovative product line that improves LAN operating efficiency by combining industry-leading ease of use and the highest resiliency available for stackable switches . However , under many circumstances , there is still plenty of light that passes through clouds allowing algae to grow well , and clouds can act to shade the algae from very bright light that can inhibit their growth .