Abstract: In the jackbox of the present invention, a number of electrical connectors are releasably connectable to electrical leads carrying electrical signals representative of at least one physiological patient parameter from the patient to patient monitoring equipment. Preferably, the jackbox has an openable enclosure for gaining access to electrical connectors therein. When closed, the enclosure preferably substantially surrounds the electrical connectors and ends of the electrical leads. The enclosure can have a clamshell, book, or other form as desired. Although an openable enclosure is preferred, some embodiments of the jackbox have no enclosure or have an enclosure not permitting user access to the interior thereof. Enclosures according to different embodiments of the present invention are made of resilient and relatively non-deformable, semi-deformable, or deformable material.