Explanory guide to the self-provision license (SPL) and the telecommunication services licence (TSL) / Office of Telecommunications
Explanatory guide to the telecommunications class licence for the running of systems for value added and data services / OFTEL
A basic guide to telex, electronic mail and fax services for small businesses / OFTEL
A consumer guide to telephones and services / OFTEL
A basic guide to data communications / OFTEL
Does your business need a new telephone system? / OFTEL