Engineering information
Page 31 of 64
Centralized Attendant Service Description and engineering
Example:
is chosen because it meets the given grade-of-service value. From
the table, in the AWT 16–20 column, the value T of 395 CCS is selected (T
CCS
≥
Tt CCS). For the value T = 395 CCS, the table shows that 14
attendants are required at the Main site to handle this particular
application.
Average speed of answer
= 2 s grade of service
Attendant work time (AWT)
= 20 s
Attendant traffic (Ta) at Main site
= 170 CCS
Attendant traffic (Ta) at Remote site #1 = 100 CCS
Attendant traffic (Ta) at Remote site #2 = 120 CCS
Then
Tt = 170 + 100 + 120 CCS
Tt = 390 CCS
Table 3
Release Link Trunk requirements
Average speed of answer
≤
2.00 seconds; average RLT delay
≤
2.00 seconds
RLT
circuits
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
5
4
3
2
2
1
1
1
1
1
1
1
2
24
22
20
18
17
16
15
14
13
13
12
12
3
45
45
43
41
39
37
36
34
33
32
31
31
4
68
70
68
66
63
61
60
58
56
55
54
53
5
92
96
95
92
90
87
85
83
82
80
79
77
6
116
123
122
120
117
115
112
110
108
107
105
104
7
138
150
150
148
145
143
140
138
138
134
132
131
8
159
178
179
177
174
171
169
167
164
162
160
158
