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CCITT Rec. M.140 (11/1988) – DESIGNATIONS OF INTERNATIONAL CIRCUITS, GROUPS, GROUP AND LINE LINKS, DIGITAL BLOCKS, DIGITAL PATHS, DATA TRANSMISSION SYSTEMS AND RELATED INFORMATION
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CONTENTS
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0 General
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1 Designations of international public switched circuits
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2 Related information for international public switched circuit
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3 Designations of international fixed (non-switched) circuits
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4 Related information for international fixed circuits
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5 Designations of international groups, supergroups etc. (bidirectional and unidirectional)
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6 Designations of international group links, supergroup links and line links
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7 Related information for international groups, goup links and line links
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8 Designations of international digital blocks (bidirectional and unidirectional)
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9 Designation of international digital paths
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10 Designations of routes in the mixed analogue/digital transmission network
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11 Designation of data transmission systems
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12 Related information for international digital blocks, paths and data transmission systems
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ANNEX A – Full examples for designation information
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A.1 Full example for the designation information of a public switched telephone circuit
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A.2 Full example for the designation information of a leased analogue circuit
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A.3 Full examples for the designation information of an international group and an international group links
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A.4 Full examples for the designation information of an international digital block, digital path and data ...
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ANNEX B – Reference section numbers for the various types of routes
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References