The ITU Radiocommunication Assembly considering: a) that in ITU-T texts concerning telephone operations and tariffs and in ITU-R texts concerning radiotelephone transmissions (e.g. telephone radio-relay systems and the maritime mobile service radiotelephony), the quantity “traffic intensity” is used together with the unit in which it is expressed. With progress in telecommunications, increasing use will be made of this term and this unit; b) that the variable “traffic intensity” and its unit “erlang” are defined in ITU-T Recommendation E.600 and reproduced below.