Register at the JPORTAL website and complete your juror questionnaire. You can sign up for text or email notifications or request an excusal or deferral.The form will be available at each jury reporting location. If you are a potential juror with questions about your on-call period, please call 1-877-458-6306. The Summons does what its name suggests; it summons or "calls" the defendant before the court. The Complaint is perhaps the more important document. You will be required to make only one appearance in court for jury selections held that day, or serve for one trial (jury selection may take more than one day). I just got a jury summons and it says I have to call in for a full week to see if I'm needed. Last time I was summoned, about a year ago, it was for a day. See the United States Courts Jury Service webpage for information about serving on a federal jury.