Introduction of new program modules into a stored program controlled telephone exchange system
By: investigation carried out by J.M. Garbutt, I.W. Lowrie [and others]... during 1971; report written by I.W. Lowrie... [and others].
Contributors: Garbutt, J M.; Lowrie, I W.
Series: report -- no. 458.; Project no. 44 508110
Publisher: Post Office Research Department
Published: 1975
Place of publication: London
Language: eng