Page 44 of 64 Engineering information
553-2681-100 Standard 5.00 August 1996
Table 24
CAS attendant requirements
Average speed of answer
≤
6.00 seconds
CAS
attendants
needed
Attendant work time (AWT) in seconds
1–5 6–10 11–15 16–20
21–25
26–30
31–35
36–40
41–45
46–50
51–55
56–60
Attendant traffic (Ta) in CCS
1
19
13
10
8
6
5
5
4
4
3
3
3
2
53
44
38
34
31
29
27
26
24
23
22
21
3
87
77
70
65
61
57
55
53
51
49
48
46
4
123
111
103
97
92
88
85
82
80
78
76
74
5
157
145
136
130
124
120
116
113
110
108
106
104
6
191
180
170
163
157
153
148
145
142
139
136
134
7
225
215
205
197
191
186
181
177
174
171
168
166
8
259
249
240
231
225
219
214
210
206
203
200
197
9
294
283
274
266
259
253
248
243
239
236
233
230
10
328
317
308
300
293
287
281
277
272
269
265
262
11
362
351
342
334
327
321
315
310
306
302
298
295
12
396
385
376
368
361
355
349
344
340
335
332
328
13
430
419
410
402
395
389
384
378
373
369
365
362
14
463
453
443
435
429
423
417
412
407
403
399
395
15
496
487
477
469
462
456
451
446
441
437
433
429