Division 1

National systems shall fulfil the following minimum level of service:

1. 1.1.

   They shall be available 24 hours a day, 7 days a week.

2. 1.2.

   Their availability shall be monitored by a heartbeat message issued from the central hub.

3. 1.3.

   Their availability rate shall be 98 %, according to the following table (the figures have been rounded to the nearest convenient unit):

   An availability of	means an unavailability of
   	Daily	Monthly	Yearly
   98 %	0,5 hours	15 hours	7,5 days

   Member States are encouraged to respect the daily availability rate, however it is recognised that certain necessary activities, such as system maintenance, will require a down time of more than 30 minutes. However, the monthly and yearly availability rates remain mandatory.

4. 1.4.

   They shall respond to a minimum of 98 % of the requests forwarded to them in 1 calendar month.

5. 1.5.

   When sending check good repute responses, infringement notification acknowledgements and check community licence responses in accordance with Annex VIII:

   1. 1.5.1.

      They shall respond to requests within 10 seconds.

   2. 1.5.2.

      The global request timeout (time within which the requestor may wait for a response) shall not exceed 20 seconds.

   3. 1.5.3.

      They shall be able to service a request rate of 6 messages per second.

6. 1.6.

   National systems will not send requests to the ERRU hub at a rate exceeding 2 requests per second.

7. 1.7.

   Every national system shall be able to cope with potential technical problems of the central hub or national systems in other Member States. These include, but are not limited to:

   1. (a)

      Loss of connection to the central hub

   2. (b)

      No response to a request

   3. (c)

      Receipt of responses after message timeout

   4. (d)

      Receipt of unsolicited messages

   5. (e)

      Receipt of invalid messages