1. Apparatus for connection to private circuits run by certain public telecommunication operators. Specification for apparatus for connection to digital circuits according to CCITT Recommendation X.21 bis Part 7, (31st December 1990) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (13 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Apparatus for connection to private circuits run by certain public telecommunication operators. Specification for apparatus forconnection to digital circuits with interfaces according to CCITT G-series Recommendations. G.703 services at 2048 kbit/s and 8448 kbit/s Part 8-8.1, (31st October 1990) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (30 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
3. Apparatus for connection to private circuits run by certain public telecommunication operators. Specification for apparatus forconnection to digital circuits with interfaces according to CCITT G-series. Recommendations. G.703 64 kbit/s service using codirectional option Part 8-8.2, (31st October 1990) 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) ↗
4. Specification for information exchange systems. End system to intermediate system routeing exchange protocol for use in conjunction with the protocol for providing the connectionless-mode network service. (31st October 1990) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (36 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗