Page42 of 544 Memory,Storage and CPU capacity
553-3011-100 Standard14.00 January 2002
Note 13
The following applies to each customer:
•Two words are required in the attendant unprotected data block (per
attendant console). This requirement is already accounted for in the size
of the attendant data block.
•If EBLF (Enhanced Busy Lamp Fields) is on (LD 15), there is a bit
required to indicate the busy or idle status of each DN. This amounts to
7 (16 bit) words per hundred groups defined.
Note 14
Total Unprotected data store per system is increased by the following:
(2 x CR) + (4 x BGD) + TRUNK + PPM_CARD + 4
where:
CR = number of Call Registers defined
BGD = number of background terminals
TRUNK = number of trunks
PPM_CARD = number of CO or E&M trunk card
Note 15
Model telephones and trunks require card block components only.
Model trunks — average 5 words
Model telephones — average 2 words
Note 16
The following tables show unprotected memory requirements for ISDN Basic
Rate Interface.