40 Chapter 5 Using serial port diagnostic toolsConducting TSTSERIO testsThe TSTSERIO command performs local loopback tests of the serialcommunication ports from the server run-time environment.Note: Before conducting these tests, shut down the appropriateservices. See "Shutting down services" (page 37).CAUTIONRisk of communications lossBy stopping the services on COM1 or COM2, you lose the supportaccess feature.CAUTIONRisk of stopping call processingBy stopping the services on COM2, you stop call processing onCallPilot.TSTSERIO command syntaxThe syntax for the TSTSERIO command is as follows:TSTSERIO [/?] /P:comport [/S:subtstname] [/L:loops]TSTSERIO command parametersTSTSERIO command parametersFlag Requirement Description? n/a Displays Help./P:comport Required Specifies the symbolicport name assigned tothe port you want to test./S:subtstname Optional Specifies a TSTSERIOsubtest. See the followingtable for a description ofthe available subtests./L:loops Optional Specifies the number oftimes (up to a maximumof 65 535) to executethe requested test. Thedefault number of tests is1. A value of 0 infinitelyloops until you enterCtrl+C.Nortel CallPilot1002rp Server Maintenance and DiagnosticsNN44200-701 01.02 Standard5.0 4 April 2007Copyright © 2007, Nortel Networks Nortel Networks Confidential.