Meridian Nortel 1 Option 11C Technical Reference Manual page 55

Note 2
The size of the protected line block for attendant telephones is determined
from the following:
Primary Line Block = 205 words
Secondary Line Block = 6 words
Card Block Component = 4 words
In addition to the basic line block, each feature requires extra data space as
follows:
Autodial Key = 8 words
Paging Key = 2 words
Store Number Redial Key = 8 words
Memory, Storage and CPU capacity
Option 11C and 11C Mini
Page 55 of 544
Technical Reference Guide