Imagistics IM 3512

Imagistics 3512 DEVD iSeries Printer problem CPF3397

Hi I'm having trouble with a few Imagistics 3512 printers connected to a I series via IP The printers are in the US and the I series is in the UK They print correctly but are plagued with the printer ending abormaly. These then have to be restarted over and over again!! Does any body have a...