Meridian Nortel 1 Option 11C Technical Reference Manual page 42

Page 42 of 544 Memory, Storage and CPU capacity
Note 13
Note 14
Note 15
Note 16
553-3011-100 Standard 14.00
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.
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
Model telephones and trunks require card block components only.
Model trunks — average 5 words
Model telephones — average 2 words
The following tables show unprotected memory requirements for ISDN Basic
Rate Interface.
January 2002