104 Memory calculations
Note 8 : N, the recommended number of Call Registers is:
N = (T + 815)/33.8 + M
where:
T=A/2xCx1.42-B.
M = the number of ACD incoming trunks.
A = the total voice loop traffic in CCS.
B = M x
l(1
is average CCS per ACD trunk).
C = the total call register traffic factor
The Total Call Register Traffic Factor is equal to 1 + any of the following
factors:
0.037 if CDR Charge Account
0.074 if Authorization Code
0.037 if Parallel CDR Ports Per Customer
0.150 if NARS/BARS/CDP
0.150 if FCBQ and OHQ
0.033 if ACD RAN
0.019 if Telset Messaging
0.140 if
&Is
0.083 if Ring Again
0.033 if Music Trunk
0.067 if CPRK
0.003 if NFCR
0.039 if ESN Signalling
0.0 if Stored Number
Redial
(negligible impact)
0.184 if IVMS (with R4-5)
0.044 if individual hold (with R4-5)
::.
*,
‘
.,
.,
:
‘-
:;I
Memory calculations 553-2201-151 Appendix 1