
Chapter 52 Call security and remote access 449
BCM 4.0 Networking Configuration Guide
The dialing string 911, which is the number for emergency assistance in North America, is
included as both a restriction and an override in Filter 01. This arrangement prevents anyone from
blocking calls for emergency assistance on lines or sets using the default filter.
Filters 02, 03, and 04, although not preset with restrictions and overrides, are the default filters in
these programming headings:
Default filters (other)
Three profiles have global overrides which do not appear in Element Manager restriction
programming and cannot be changed.
Australia: 000, 13144A
UK: 999, 112
Table 101 Default restriction filters
Filter Restrictions (denied) Overrides
00 Unrestricted dialing
01 01: 0
02: 1 001: 1800
002: 1877
003: 1888
03: 911 001: 911
04: 411
05: 976
06: 1976
07: 1AAA976
01 08: 1900
09: 1AAA900
10: 5551212
02 - 99 No restrictions or exceptions programmed
Note: Default filters are loaded when the system is initialized. A cold
start restores the default filters.
Table 102 Default filters for program headings
Filter Heading Sub-heading
02 System DNs Set restrictions
03 Lines Line restriction
04 Lines Remote restriction
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