This read-only INTEGER specifies, network-wide, the maximum delay in milliseconds for a High Speed Data connection. An administrator uses this delay ceiling specifically for high-speed data traffic, distinct from the ordinary data ceiling in parSysParmsMaxDDelay, reflecting that this traffic class likely has different tolerance requirements. For example, a High Speed Data connection would fail to route over a path whose delay exceeds this specific budget even if it would otherwise satisfy the plain data delay ceiling.