1. Digital data transmission. Basic mode control procedures; conversational information message transer Part 7, (31st August 1976) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (4 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Digital data transmission. Complements to the basic mode control procedures; recovery, abort and interrupt, multiple station selection Part 6, (31st August 1976) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (14 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗