138
Memory
calculations
where:
S = number of different DN appearing on SL- 1 telephones, 500/2500
telephones mixed with SL- 1 telephones, and private line 500/2500
telephones
-
AS = number of appearance of DN within S
Nl
= number of different first digit in the numbering plan
N2 = number of different sequence of the
fast
two digits in the
numbering plan (if DN is more than 2 digits)
N3 = number of different sequence of the first three digits in the
numbering plan (if DN is more than 3 digits)
N4 = number of different sequence of the first four digits in the
numbering plan (if DN is more than 4 digits)
N5 = number of different sequence of the first five digits in the
numbering plan (if DN is more than 5 digits)
N6 = number of different sequence of the first six digits in the
numbering plan (if DN is more than 6 digits)
AD = number of ACD-DNs
_
AI = number of ACD POSITION-ID
S
in each ACD-DN
DD = number of DISA-DNs
SPDN = number of System Park DNs
Memory calculations 553-2201-151 Appendix 1