> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/telecom-references/apis-and-integration/adding-nap-grouping-script.md).

# Adding NAP Grouping Script

> **Applies to:** Tmedia 2.9, 2.10, 3.0, 3.1

This article describe how to add **NAP Grouping** script to any Routing scripts.

**Script description**

This filter is used to dynamically generate routes from a Regex. The trick is to use the NAP names to identify which NAPs are in the same group. The example in the file provides information about "SIP\_. *"Use instead "/GROUPA\_.*/".

For example:

* GROUPA\_SIP\_NAP\_10\_10\_10\_10
* GROUPA\_SIP\_NAP\_10\_10\_10\_11
* GROUPA\_SIP\_NAP\_10\_10\_10\_12
* GROUPB\_SIP\_NAP\_10\_10\_20\_20
* GROUPB\_SIP\_NAP\_10\_10\_20\_21
* GROUPC\_SIP\_NAP\_10\_10\_30\_30

Then, in your routes, you can use the Route Column "additional\_naps" to put /GROUPA\_.\*/

**Add *****NAP Grouping***** Scripts in the system**

| Download this file                                                                   |
| ------------------------------------------------------------------------------------ |
| \*[multiple\_naps.rb](https://docs.telcobridges.com/w/images/c/c0/Multiple_naps.zip) |

**Setting up *****NAP Grouping***** Scripts**

To set up a Filter, the main script needs to be modified. The main script can be either simple\_routing.rb, simple\_routing\_sbc.rb, or any other script.

Go to the routing script section of the Web portal

```
Gateway -> Routing scripts -> Example Scripts -> simple_routing.rb [Edit]
```

Three things need to be added. At the start of the script:

```
require 'multiple_naps'
```

In the main class:

```
include MultipleNaps
```

```
before_filter :method => :multiple_naps
```

The final script will look like this:

```
require 'base_routing'
require 'multiple_naps'

class SimpleRouting < BaseRouting
  include MultipleNaps
  before_filter :method => :multiple_naps

  route_match :call_field_name => :called
  route_match :call_field_name => :calling
  route_match :call_field_name => :nap
  route_remap :call_field_name => :called, :route_field_name => :remapped_called
  route_remap :call_field_name => :calling, :route_field_name => :remapped_calling
  route_remap :call_field_name => :nap, :route_field_name => :remapped_nap
end
```

**Adding New Custom Variable**

You must add a custom column to use this script.

```
Gateway -&gt; Routes -&gt; Create New Route Column
```

**Name**: additional\_naps **Type attributes**: text '''


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