Blocking Calls To Area Codes From All Extensions; Setting Unrestricted Area Codes - Altigen ACM 6.5 Administration Manual

Defining System Call Restrictions
Figure 9. System Configuration, Call Restriction tab

Blocking Calls to Area Codes from All Extensions

To add or edit system-prohibited area codes:
1. Double-click an index entry in System Prohibited Prefixes list, or select the index
entry and click Edit. This opens a dialog box that allows you to enter a prefix
number.
2. Enter a 1 and the dialing prefix to block (for example, 900, 976). You can enter up
to 20 digits maximum for each prefix. For example, to block calls from all extensions
to 976 numbers, type 1976.
3. Click Apply.
A maximum of 20 prefixes can be defined.
Note:

Setting Unrestricted Area Codes

To add or remove "local" call definitions (including calls that begin with 1 but are free:
800, 888), use the Add or Delete button in the Unrestricted Area Code panel, and click
Apply. The Extension Configuration's Restriction tab references these area codes
(as local and unrestricted) in its Outcall Restrictions panel.
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MAXCS ACM 6.5 Administration Manual