A Connecticut Subpoena to Testify at a Deposition in a Civil Action is a legal document used by an attorney in Connecticut to compel a witness to testify under oath at a deposition. This subpoena is issued by a court, with the permission of the plaintiff or defendant, and is served upon the witness, ordering him or her to appear and testify in a civil action. There are two types of Connecticut Subpoena to Testify at a Deposition in a Civil Action: a Subpoena Ducks Cecum and a Subpoena Ad Testificandum. A Subpoena Ducks Cecum orders the witness to bring certain documents or other tangible evidence to the deposition, while a Subpoena Ad Testificandum orders the witness to appear and testify. A Connecticut Subpoena to Testify at a Deposition in a Civil Action must be signed by an attorney or the court, and must contain the name and address of the witness, the name of the court, the name of the action, the time and place of the deposition, and any documents or other tangible evidence the witness is to bring. The subpoena must also contain a notice that failure to comply with the subpoena is punishable by fine or imprisonment.