Engineering information Page 43 of 64
Centralized Attendant Service Description and engineering
Table 23
CAS attendant requirements
Average speed of answer
≤
5.00 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
17
11
8
7
5
5
4
3
3
3
2
2
2
50
41
35
32
29
27
25
23
22
21
20
19
3
85
74
66
61
57
54
52
50
48
46
45
44
4
120
107
99
93
88
84
81
79
76
74
72
71
5
155
141
132
125
120
116
112
109
106
104
102
100
6
190
176
166
158
153
148
144
140
137
134
132
130
7
225
211
200
192
186
180
176
172
169
166
163
160
8
259
246
234
226
219
213
209
204
201
197
194
192
9
294
281
269
260
253
247
242
237
233
230
226
224
10
328
316
304
294
287
280
275
270
266
262
259
256
11
362
351
339
329
321
314
308
304
299
295
292
288
12
396
385
373
363
355
348
342
337
332
328
324
321
13
430
419
409
398
390
382
376
371
366
362
358
354
14
463
453
443
433
424
417
410
405
400
395
391
387
15
496
487
477
468
459
451
444
439
433
429
424
421