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Class of Service

Each telephone extension on the University's private branch telephone network has been set up with a predetermined class of service which dictates the restrictions, if any, that are placed on calls that can be made from that extension. This will determine whether your extension has internal, local, UK, or full international calls access.

It is the responsibility of school/unit heads to define the classes of service on the telephones within their departments. There is no pre-determined rule that governs which class of service is applied to which telephone.

For students in Halls of Residence, your telephone's class of service is fixed and is not open to change. 

Staff members email Telephone Office to request a change to the class of service on your telephone extension.

All telephones can dial (9) 999 for the Emergency Services regardless of Class of Service. However your call may not be routed to a local call centre. Therefore accurate information must be given which should include:
The number you are calling from, your location and the nature of the emergency.

Class Description

  1. Internal calls only, no DDI
  2. Local calls day, internal calls night, no DDI
  3. Local calls day and night, no DDI
  4. STD calls day, internal calls night, no DDI
  5. STD calls day and night, no DDI
  6. International calls day, internal calls night, no DDI
  7. International calls day and night, no DDI
  8. Local calls day, Internal calls night, DDI
  9. Local calls day and night, DDI
  10. STD calls day, internal calls night, DDI
  11. STD calls day and night, DDI
  12. International calls day, internal calls night, DDI
  13. International calls day and night, DDI
  14. Internal calls only, DDI
  15. International calls day, STD calls night, DDI
  16. Internal calls day, local calls night, DDI
  17. STD calls day, local calls night, no DDI
  18. STD calls day, local calls night, DDI
  19. International calls day and night, DDI, external divert permitted

The cutover time from day to night is currently 17.30.

Contact

Telephone Office

Old Union
79 North Street
St Andrews
Fife
KY16 9AJ
Scotland, United Kingdom

Tel: 01334 462100