Internal Patchcord Origination Use the Internal Patchcord Origination page to provision the internal patchcord origination parameters. Item Description Shelf (Multishelf only) Choose the shelf where the internal patchcord originates. Slot Choose the slot containing the card where the internal patchcord originates. Tx Port Choose the port where the internal patchcord originates. Back Displays the Internal Patchcord Attributes page. Next Displays the Internal Patchcord Termination page. Cancel Cancels circuit creation. Help Displays context-sensitive help.