1、INTERNATIONAL TELECOMMUNICATION UNION)45G134 % TELECOMMUNICATIONSTANDARDIZATION SECTOROF ITU4%,%0(/.%G0G0.%47/2+G0G0!.$G0G0)3$.15!,)49G0G0/ they should use a separate column for each under the heading “Type of call”.1.3 For collect calls, the times to be recorded will be those observed in the countr
2、y where the call request wasmade.1.4 It is recommended that these observations be spread over the whole day.1.5 Each outgoing Administration will select the international circuit groups on which observations should becarried out.1.6 In completing this table, reference should be made to the following
3、 explanations:2 How to fill in Table 1/E.423 (Traffic observations determined by the operators)Category 1 This category should show the mean duration of calls observed which are successful and havebeen charged for (“effective” calls).Category 2 This category will show the mean chargeable duration of
4、 all effective calls observed.Category 3 This category will show, for each type of observed call, the average time per effective call duringwhich the international circuit has been occupied for manuvres or for call preparation.This average should be based on the time during which the international c
5、ircuit is held:a) to obtain information concerning the called number;b) to obtain information about routing and trunk codes;c) to call operators, in the incoming international exchange;d) to exchange information on how to set up the call;e) to (or attempt to) obtain the called number even when it is
6、 engaged or does not reply;f) to (or attempt to) obtain the called person (in personal calls);g) between replacement of the receiver by the called person and release of the circuit;h) because the operator is holding the circuit (whether she is on the line or not) and for any other reasons forwhich t
7、he circuit is engaged.2 Fascicle II.3 - Rec. E.423TABLE 1/E.423Observations on traffic set up by operatorsInternational outgoing exchange: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Circuit group: . . .
8、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Service semi - automaticmanuala)a)Period from . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .to . . . . . . . .
9、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .CategoryType of callb)Ordinary Personal1. Mean call duration in seconds2. Mean chargeable duration in seconds3. Mean holding time of circuits for manoeuvres andpreparation of calls in seconds4. Number of effective
10、 calls observed5. Mean number of times the international circuit was seized pereffective call6 Mean number of “ attempts ” per effective call7. Percentage of calls set up at the first “ attempt ”8. Time-to-answer by operators Total number of calls answeredand unansweredCalls answeredCalls unanswered
11、(abandoned calls)Operators:Num-berMeanwaitingtime insecondsunder15 secondsin 15 to 30secondsafter30 secondswithin30 secondsafter30 secondsNo. % No. % No. % No. % No. % incoming operator (code 11) delay operator (code 12) assistance operator information operator9. Quality of transmission from the sus
12、cribersviewpoint:Number % 10. Comments good defectiveTotal 100a)Delete whichever is inapplicable.b)In accordance with 1.2.Fascicle II.3 - Rec. E.423 3The times listed above, which exclude the conversation time, should be added together. This total should bedivided by the number of effective calls ob
13、served during the period in question to obtain the value to be entered inTable 1/E.423.Category 4 The number of effective calls observed considered in category 1.Category 5 The mean number of times the international circuit was seized per effective call (see category 3).This number is usually obtain
14、ed by meter recordings.Category 6 The mean number of attempts (as specifically defined hereafter from the operating point of view)to set up a call. Should the operator try several times to set up a call while continuously occupied on that call, all theseoperations must be considered as being one att
15、empt. Similarly, if the operator makes several tries to set up a call andeach time encounters a congestion or busy condition and if, after the last try, she informs the caller, only one attemptmust be entered. Calls to information services or to obtain routing particulars, and all calls not directly
16、 related to theestablishment of a call or to information required by the caller, should not be considered as attempts and should not beincluded.The total number of attempts during the period of observation should be divided by the number of effectivecalls observed in the same period to obtain the me
17、an number of attempts per call.The total number of attempts is usually determined from markings or notations on call tickets.Category 7 The data for this category will be taken from all tickets prepared for the relation concerned,during the period of observation or a comparable period.Category 8 The
18、 mean waiting time for outgoing operators to receive an answer will be indicated in seconds.This average will include both answered and unanswered calls.An outgoing operator waits on the circuit (waiting time) for the period:a) until the incoming operator answers, orb) until she abandons the attempt
19、, should the incoming operator not answer.Thus while mean waiting time relates to the outgoing operator it is also a measure of the performance of theincoming operators.Category 9 It will be difficult to obtain absolutely comparable results from all observers for this category.However, the observer
20、should consider the quality of transmission from the subscribers viewpoint, taking into accountcomments made in this respect by subscribers and the number of requests for conversation to be repeated.Category 10 This category should include any comments likely to explain the probable cause of difficu
21、ltiesfrequently noted during the observations.3 Automatic observations of the time-to-answerby operators (Comments concerning the use of Table2/E.423)3.1 This table summarizes observation of the time-to-answer by operators.3.2 Administrations should make a distinction between the different types of
22、incoming operators if the types ofoperators are distinguished by the selecting digits.3.3 It is recommended that these observations be spread over the whole day.3.4 Each outgoing Administration will select the international circuit groups on which observations should becarried out.3.5 The time-to-an
23、swer of the assistance operator cannot be measured automatically.3.6 In completing this table, reference should be made to the explanations in 4.4 How to fill in Table 2/E.423 (Automatic observations of the time-to-answer by operators)The mean waiting time for outgoing operators to receive an answer
24、 will be indicated in seconds. This averagewill include both answered and unanswered calls.The mean waiting time is defined as the time interval between the instant the outgoing circuit is seized (theseizing signal is sent) and:a) the instant the incoming operator answers, orb) the instant the outgo
25、ing operator abandons the attempt (a clear-forward signal is sent).4 Fascicle II.3 - Rec. E.423TABLE 2/E.423Automatic observations of the time-to-answer by operatorsInternational outgoing exchange. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26、. . . . . . . . . . . . . . .Circuit group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Service: semi-automaticPeriod from . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27、. . . . to . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Time-to-answerby operatorsTotal number ofcalls answeredand unansweredCalls answeredCalls unanswered(abandoned calls)Operators:Num-berMeanwaitingunder15secondsin 15to 30secondsafter30secondswithin30secondsafter30secondstime in secondsNum-ber%Num-ber%Num-ber%Num-ber%Num-ber% incoming operator delay operator information operator
