Disabled (with FF escape) mode
Some comments should be made on this mode of the VSP . The mode exists so that you could prevent the VSP from sending on-the-fly commands to the DS while at the same be able to program the DS from the DS Manager using inband access method .
Inband programming is usually used when out-of-band access is not possible. For the inband programming to work the DS must be configured for inband access . In this case the DS treats all data characters with ASCII code 255 (FF Hex) in a special way: all ASCII code 255 characters sent from the VSP to the DS must be doubled, or the DS will mistake these data characters for a beginning of inband commands (see inband commands for details). In the inband on-the-fly mode the VSP does this "doubling" but it also sends on-the-fly commands. If you don't want the on-the-fly commands to be sent then use the disabled (with FF escape) on-the-fly mode- the VSP will refrain from sending any on-the-fly commands but will still "double" all outgoing FF characters. Likewise, the VSP will correctly handle all "double" FF characters sent by the DS.