Ticket Number: HEA-NOC/19980728-01         Ticket Status: OPEN
 Ticket Type:   Scheduled                   Ticket Source: HEA-NOC
 Ticket Scope:  Site                        Site/Line:
 Ticket Owner:  [log in to unmask]             Problem Fixer: T.E.
 Ticket Opened: 19980728  08:43:33 UTC      Problem Start: 19980802  10:00 UTC+1
 Ticket Closed:                             Problem End:   19980802  12:00 UTC+1

Problem Description:

To help identify and repair the cause of random flapping on HEAnet
lines, Telecom Eireann have requested a one-hour outage on all T.E.
circuits entering Marine House. To minimise disruption, this outage is
scheduled for 10:00 on the Sunday of the coming bank holiday weekend.


Access to all HEAnet sites will be out for approx one hour during the
at-risk period (10:00 to 12:00).


T.E., working with the NOC, have isolated the problem to T.E.
equipment at or near Marine House. Their schedule is as follows:

  10:00  Test the light level at the fibre entering Marine House
  10:15  Change all cards in the 155 Mbit network point at MH
         and if necessary change the transmit level at the exchange
  10:45  15-minute test of new equipment
  11:00  Completion

Time to Fix:

Scheduled at-risk for 2 hours - an outage of no more than 1 hour is