onsite/offsite

hi i am appearing interviews. in one interview they have asked me ur working at client place or not(onsite/offsite). i said offsite and involved in configuration and implementation of the project.(from realization phase). interviewer asked how cum u involved in configuration and implementation phase becz ur working offsite. later when i asked my freind he said that offsite consultants only involve in testing of already configured and implementation scenarios. only onsite people involve in configuration,implementation, final preparation and golive. so pls any body suggest me clearly if i were offsite in what stages i involve in the project <b>detailly</b>. plssss help

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