7 items Collection of sales documentation and technical manuals relating to the BT Monarch Call Connect System digital PABX (private automatic branch exchange)
10 Technical manual: ‘Monarch 120 A, B and Compact Call Connect Systems, Man Machine Interface (MMI) Commands with Abbreviated Maintenance Information’
10 Technical manual for use by prospective purchasers: ‘The Monarch 120 Call Connect System, Technical Description Part 2’
20 Technical manual, ‘Monarch Field Manual for BT field engineers’, Issue 1 April 1996, for the BT Monarch Call Connect system
10 Technical manual for use by prospective purchasers: ‘The Monarch 120 Call Connect System, Technical Description Part 1’