Non-ProZ.com Apr 19, 2004:

telekomunikace, prosim. zde je sirsi kontext: Problem - Major H/S Conditions that cause conditions that seriously affect system operation,
maintenance and administration, etc. and require immediate attention as
viewed by the customer after discussion with the supplier. The urgency
is less than in critical situations because of a lesser immediate or
impending effect on system performance, customers and the customer�s
operation and revenue. For example:
- reduction in any capacity/traffic measurement function,
- any loss of functional visibility and/or diagnostic capability,
- short outages equivalent to system or subsystem outages, with
accumulated duration of greater than 2 minutes in any 24 hour
period, or that continue to repeat during longer periods,
- repeated degradation of DS1 or higher rate spans or connections,

So, I don't think this helps too much, it's just the short string that I have difficulty with. DS1 is "zakladni digitalni signal DS1".