Reference13r1:PBX/Config/Filter

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In the innovaphone PBX, it is possible to define global call filters. These filters can be used to restrict the numbers which are allowed as destination for calls or diversions on a per user basis.

Contents

Call filter

Configuration

Name The name of the filter. The name may not be ok or nok , since these names refer to filter properties. This name is used to configure a filter at an object.
Not / Boolean A filter can be made dependent on the state of a Boolean object. If a Boolean object was defined here, the filter is only effective if the Boolean object is set to true (Not checkbox not checked) or false (Not checkbox checked)
Number Number used to match a call/diversion destination. A '?' can be used to match any digit. If there are multiple matching filters, the match with the highest number of digits wins. An empty number always matches. If there are multiple destinations with the same number (maybe empty as well), which call up other filters, these other filters are called in the sequence they are entered until there is a match.
Next (ok/nok/filter) Possible entries: ok, nok or filter name (for calling up a further filter with the designated filter name).

Example 1 (internal calls only)

This filter prohibits any number beginning with 0 to be dialed. If the trunk object is defined with number 0 no outside calls can be made by the user with this filter configured.

Number Next
0 nok

Example 2 (internal calls only with exceptions)

This filter prohibits any number beginning with 0 to be dialed. If the trunk object is defined with number 0 no outside calls can be made by the user with this filter configured. The numbers 0110 and 0112 are excluded from this rule.

Number Next
0 nok
0110 ok
0112 ok

This example shows that filters are searched on a longest match base. That is, digits are collected until there is no ambiguity any more. In this example, this is why the first filter (with number 0 is not executed unless it is clear that neither 0110 nore 0112 do match).

Example 3 (restricted external calls via different trunk numbers and different number formats)

This filter makes use of filter names instead of ok or nok. This feature is useful to restrict access to set of public numbers that can be reached via different trunk numbers and different number formats like international, national and local.

This example prohibits value added numbers 0900 and 0137 dialled via two trunks 0 and 9 in both number format, national and international.

Filter NameNumberNextComment
restricted900nokvalue added numbers
137nokvalue added numbers
my_filter00049restrictednumbers dialled in international format via trunk 0
00restrictednumbers dialled in national format via trunk 0
90049restrictednumbers dialled in international format via trunk 9
90restrictednumbers dialled in national format via trunk 9

Example 4 (combine several filters using empty numbers)

This filter makes use of filter names instead of ok or nok with empty numbers.

This example defines three filters, the first blocking the number 200, the second 200, 201 and the third 200,201,202.

Filter NameNumberNextComment
no200200nokblock 200
no201201nokblock 201
no200 and 200
no202202nokblock 202
no201and 200,201

IP Filter

In the IP Filter section, you can define global IP address filters to protect the innovaphone PBX from unauthorised access.

Two specific filters are available:

  • IP-Filter (registration without authentication)
    • Address: The network address to be filtered.
    • Mask: The associated network mask.

On the networks defined here, registrations per PBX object without password are possible (as defined as No of Regs w/o Pwd. in PBX/General. If nothing is configured here, a registration without password is possible from any IP address.

  • IP-Filter (registration with authentication)
    • Address: The network address to be filtered.
    • Mask: The associated network mask.

On the networks defined here, registrations per PBX object with password are possible. If nothing is configured here, a registration with password is possible from any IP address.

IP Filter Examples

Address Mask
192.168.0.0 255.255.255.0
10.0.0.0 255.0.0.0
2001:db8:: ffff:ffff::

Boolean

In the Boolean section, all objects that were created as a Boolean object in the chapter entitled "Administration/PBX/Objects" are displayed.

Limitations

There are two limitations: 100 for the number of filters and 200 for the total number of filter destinations

Related Articles

Howto:Diversion filter at the user object

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