3com MSR 20-20 참조 매뉴얼

caller-permit calling-string

undo caller-permit { calling-string | all }

POTS/VoIP/VoFR entity view

all: Specifies all calling numbers.

calling-string: Calling number permitted to originate a call to the local voice entity, 
in the format of { [ + ] string [ $ ] }| $, with a maximum length of 32 characters. 
The following describes the symbols in the format:

■

+: Plus sign. It comes before the whole number and indicates that the number 
is an E.164 number.

■

$: Dollar sign. When it comes at the end of a number, the calling number must 
completely match the part before the dollar sign. When it comes alone, the 
calling number can be null.

■

If there is no sign behind the number, number segments beginning with it are 
permitted to originate calls.

■

string: A character string consisting of 0123456789#*.!+%[]()-. Table 685 
describes these characters.

Table 685   Description of characters in a string

0-9 

Digits 0 through 9 

# and * 

Indicates a valid digit each 

. 

Wildcard, which can match any valid digit. For example, 555.... can match 
any number beginning with 555 and ending in four additional characters. 

! 

Indicates the sub-expression before it appears once or does not appear. For 
example, 56!1234 can match 51234 and 561234. 

+ 

Indicates the sub-expression before it appears one or more times. If the plus 
sign (+) appears at the head of a number, the number is an E.164 number 
and the plus sign itself does not represent a specific number or number 
repetition. For example, 9876(54)+ can match 987654, 98765454, 
9876545454, and so on, and +110022 is an E.164-compliant number. 

- 

Hyphen (connecting element), used to connect two numbers (The smaller 
comes before the larger) to indicate a range of numbers, for example, 1-9 
inclusive.