Private branch exchanges for connection to public switched telephone networks run by certain public telecommunication operators.Facilities on private branch exchanges. Specification for facilities on private branch exchanges with terminating stations treated as an entirety Part 5-5.1, (30th September 1988)

• Record Type: Book
• Authors: British Standards Institution,
• Publisher Details: London : British Standards Institution
• Publication Date: 1988
• Extent: 1 online resource (40 pages)
• Subjects: 602.1841; Telephony; Performance testing; Circuits; Signals; Signal level; Communication equipment; Telephone switching equipment; Test equipment; Signal transmission; Telephone exchanges; Volume (sound); Telephone equipment; Automatic; Type testing; Loudspeakers; Electrical testing; Conformity; Telecommunication systems
• Languages: English
• Related ISBNs: 0580142396
• ISSNs: 1013-4130
• Access Rights: Legal Deposit; Only available on premises controlled by the deposit library and to one user at any one time; The Legal Deposit Libraries (Non-Print Works) Regulations (UK).
• Access Usage: Restricted: Printing from this resource is governed by The Legal Deposit Libraries (Non-Print Works) Regulations (UK) and UK copyright law currently in force.