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Standard E-9-1-1 Interface TriTech Software <br />4. Additional Design Constraints <br />No. <br />Design Constraint <br />Description <br />Notes <br />1. <br />Location <br />Location of VisiCAD Message Switch <br />Serial connection(s) should be through <br />and the E911 Controller shall be in <br />RS-232 data cable of no more than 50 <br />close physical proximity to each other <br />feet without special considerations to <br />to support serial cable <br />prevent data loss. <br />interconnection. <br />Third -party, network -based serial port <br />replication products are available that <br />may accommodate extended distances. <br />2. <br />Specifications for <br />The VisiCAD Message Switch (VMS) <br />VisiCAD Message <br />will be located on an interface <br />Switch <br />machine resident on the VisiCAD local <br />area network. This program will run <br />under an approved version of <br />Windows on a machine meeting <br />TriTech Software Systems hardware <br />specifications. <br />Interface Requirements Document 80 11 <br />