11. Specification for modems for connection to public switched telephone networks and speech band private circuits run by certain public telecommunications operators. (31st October 1992) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (16 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
12. Tracked Changes. Fibre optic active components and devices. Performance standards. Modulator-integrated laser diode transmitters for 40-Gbit/s fibre optic transmission systems Part 3, (12th September 2023) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (54 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗