Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators. Specification for ports Part 4, (15th December 1993)

• Record Type: Book
• Authors: British Standards Institution,
• Publisher Details: London : British Standards Institution
• Publication Date: 1993
• Extent: 1 online resource (162 pages)
• Subjects: 602.1841; Electrical safety; Circuits; Electrical impedance; Electrical testing; Telephony; Communication equipment; Safety measures; Signal level; Telephone exchanges; Telephone equipment; Signal distortion; Performance testing; Definitions; Telephone switching equipment; Interfaces; Classification systems; Telephone networks; Signal strength; Communication cables; Communication networks; Test equipment
• Languages: English
• Related ISBNs: 0580221083
• ISSNs: 0168-7457
• 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.