CCITT Rec. M.60 (11/1988) – MAINTENANCE TERMINOLOGY AND DEFINITIONS
Introduction
1 alarm indication signal (AIS)
2 anomaly
3 automatic switching equipment
4 availability (performance)
5 bit error ratio (BER)
6 bridging loss
7 channel; access channel
8 channel; transmission channel
9 circuit; telecommunication circuit
10 circuit; digital circuit
11 circuit access points
12 circuit control station
13 circuit sub-control station
14 code violation
15 connection
16 connection; digital connection
17 connection; international connection
18 connection; international telephone connection
19 continuity check
20 continuous checking
21 control station
22 data communication network
23 data communications network (DCN)
24 data communications function (DCF) block
25 dead time
26 defect
27 deferred maintenance alarm (DMA)
28 degraded minute (DM)
29 echo
30 echo canceller
31 echo suppressor
32 error
33 error; random error
34 error burst
35 error free seconds (EFS)
36 errored seconds
37 exchange
38 failure
39 fault
40 fault; intermittent fault
41 fault correction
42 fault localization; localization of faults
43 fault report point (circuit)
44 fault report point (network)
45 interface
46 international automatic circuit
47 international chain
48 international leased circuit
49 international main section
50 interruption; break of service
51 interruption
52 interruption
53 line; international line
54 line; international line
55 line; national line
56 line access point
57 link; international link
58 link; transmission link
59 logistic delay
60 loopback
61 loopback; complete loopback
62 loopback; digital loopback
63 loopback; logical loopback
64 loopback; non-transparent loopback
65 loopback; partial loopback
66 loopback; transparent loopback
67 loopback application
68 loopback control mechanism
69 loopback control point
70 loopback point
71 loopback requesting point
72 loopback test pattern
73 maintainability (performance)
74 maintenance
75 maintenance
76 maintenance; automatic maintenance
77 maintenance; controlled maintenance
78 maintenance; corrective maintenance
79 maintenance; deferred maintenance
80 maintenance; preventive maintenance
81 maintenance entity (ME)
82 maintenance entity assembly (MEA)
83 maintenance sub-entity (MSE)
84 maintenance event information (MEI)
85 maintenance philosophy
86 maintenance policy
87 maintenance service provider (MSP)
88 maintenance strategy
89 maintenance support (performance)
90 management entities
91 measurement
92 mediation device (MD)
93 mediation function (MF) block
94 multiterminal service circuit
95 national main section
96 national system
97 network analysis point
98 network element (NE)
99 network element function (NEF) block
100 omnibus service circuit
101 operation, administration and maintenance centre (OAMC)
102 operations systems (OS)
103 operations system function (OSF) block
104 path; telecommunication path
105 path; digital path
106 point
107 prompt maintenance alarm (PMA)
108 propagation performance
109 protection switching
110 protected monitoring point
111 quality of service (QOS)
112 redundancy, standby
113 reliability (performance)
114 restoration; recovery
113 restoration control point (RCP)
116 routine or periodic testing
117 serveability performance
118 service
119 service; bearer service
120 service; telecommunication service
121 service; teleservice
122 service alarm (SA)
123 service accessibility performance
124 service integrity
125 service operability performance
126 service retainability performance
127 service support performance
128 severely errored seconds (SES)
129 sub-control station
130 subscriber access maintenance centre (SAMC)
131 subscriber access maintenance entity (SAME)
132 subscriber installation maintenance entity (SIME)
133 system availability information point
134 telecommunication
135 telecommunication Administration
136 telecommunications management network (TMN)
137 terminal international centre
138 terminal international centre
139 terminal national centre
140 terminal national centre
141 terminal national section
142 terminal national section
143 test
144 test; functional test
145 test; limit test
146 test; yes or no test
147 testing point (line signalling)
148 testing point (switching and interregister signalling)
149 testing point (transmission)
150 trafficability performance
151 transmission
152 transmission performance
153 transmission restoration
154 transmission route
155 transmission route diversity
156 upstream failure indication (UFI)
ANNEX A – List of maintenance terms