1. Apparatus for connection to private circuits run by certain public telecommunication operators. Specification for apparatus for connection to speechband circuits Part 1, (31st October 1985) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (46 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Outline dimensions of transformers and inductors for use in telecommunication and electronic equipment. Specification for the outline dimensions of transformers and inductors using the Q range of C-cores Part 10, (28th June 1985) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (20 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗