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Chapter 34 Call Services
ISG50 User’s Guide
543
Each field is described in the following table.
Table 198 Configuration > PBX > Call Service > Call Block
LABEL DESCRIPTION
Enable Anonymous
block
Select this to block calls without caller ID from being routed by the ISG50. Clear it to
allow any incoming calls routed by the ISG50.
Black list Select Disable to turn call blocking off on the ISG50. Select Enable to turn on call
blocking on the ISG50. When you select Enable, use the table that displays to set up a
list of phone numbers that are not allowed to call into the ISG50.
Add Click this to create a new entry. Select an entry and click Add to create a new entry
after the selected entry.
Edit Double-click an entry or select it and click Edit to modify it.
Remove To remove an entry, select it and click Remove. The ISG50 confirms you want to
remove it before doing so.
# This field is a sequential value, and it is not associated with a specific entry.
Number This is a telephone number the ISG50 blocks from calling extensions in your telephone
network. When adding or editing an entry, type the telephone number.
You can also use the letters X, Z and N to represent numbers you want to block. The
letter “X” represents any digit from 0-9, Z any digit from 1-9 and N any digit from 2-9.
For example, enter 023XXXXXX to block any 9 digit number that starts with 023 from
calling the extensions configured on the ISG50.
Furthermore, you can use the period (.) as a wildcard, to block any numbers that begin
with a pattern of digits you specify. For example, enter 555. to block any numbers
starting with the string 555 from calling the extensions configured on the ISG50.
Apply
Click this to save your changes.
Cancel Click this to set every field in this screen to its last-saved value.