Cuộc tập trận thể lập chỉ có một số lợi thế đáng kể so với xoắn khoan đối tác của họ (tức là một phạm vi của cả hai khoan indexable và xoắn được mô tả trong ). Những cuộc tập trận indexable â € "cho phép cắt chèn được thay đổi (xem hình. 52c), cho phép tốc độ cắt nhanh hơn và cho phép một phạm vi rộng lớn hơn của vật liệu phôi để được khoan thành công hơn so với khi sử dụng thông thường xoắn khoan. Thông thường, tập thể lập chỉ mục được giới hạn ngắn hơn lỗ sâu khoảng â € ~. | CoP Ref. No. CoP - 07 2005 Code of Practice for the Installation and Maintenance of In-building Telecommunications Systems by Class Licensees Office of the Telecommunications Authority 29 November 2005 1 Contents Page Foreword ii Section 1 General Requirements 1 Section 2 Planning Consultation and Coordination Process for IBTS of New Buildings for which the Building Plans were Approved in or after 2000 2 Section 3 Planning Consultation and Coordination Process for IBTS of New Buildings for which the Building Plans were Approved before 2000 3 Section 4 Planning Consultation and Coordination Process in the Expansion or Upgrading of IBTS of Existing Buildings 4 Section 5 Interconnection of IBTS and Right of Access of Network Operators 5 Section 6 Maintenance of IBTS 7 Section 7 Enquiries and Contacts 8 i Foreword The Telecommunications Authority TA in exercise of the powers conferred on him by sections 7 5 and 7B 2 of the Telecommunications Ordinance Cap 106 the Ordinance has issued a Class Licence for In-Building Telecommunications Systems hereafter refers to as Class Licence which came into effect on 11 November 2002. The Class Licence can be downloaded from the website of the Office of the Telecommunications Authority OFTA at http . An in-building telecommunications system IBTS is defined in Schedule 1 to the Class Licence as a telecommunications system installed established operated and maintained within the common parts1 of a building or buildings within the development so long as the telecommunications system does not cross unleased Government land or public streets. The IBTS includes telecommunications equipment cables blockwiring systems in-building coaxial cable distribution system IBCCDS and relevant facilities in over or upon any common parts of a building for the conveyance of telecommunications and broadcasting services to the residents and occupiers of the building. The common parts include the Telecommunications and Broadcasting Equipment
