共 2 条
- [1] TXK3 DIRECTOR-AREA LOCAL EXCHANGES USING BXB 1112 CROSSBAR EQUIPMENT - 1. TRUNKING AND GENERAL OPERATION. Post Office Electrical Engineers' Journal, 1974, 67 (Part 2): : 66 - 72
- [2] TXK3 DIRECTOR AREA LOCAL EXCHANGES USING BXB 1112 CROSSBAR EQUIPMENT .1. TRUNKING AND GENERAL OPERATION POST OFFICE ELECTRICAL ENGINEERS JOURNAL, 1974, 67 (JUL): : 66 - 72