Methods and systems are provided for helping maintain isochronous communications with peripheral devices (308), such as USB devices, over a network (302). Some methods for facilitating isochronous IN communication include noting (1906) passage of a predetermined interval without communication (310) from the peripheral device driver (402), and then creating (1908) a dummy communication (312) and sending (1910) it over the network toward the peripheral device to maintain isochronous communication toward the peripheral device. Some methods for facilitating isochronous OUT communication include noting (2006) passage of a predetermined interval without receipt, over the network, of a responsive communication (310) from the peripheral device in response to a first communication, and then creating (2008) a dummy communication (312) and sending (2010) it toward the peripheral device driver to maintain isochronous communication transmissions toward the peripheral device driver. The interval between isochronous communication transmissions may be changed (1930) to optimize buffer (314) usage, and delays may be controlled (1922, 2016).