# Enabling Lawful Interception in a Routing Script

1- Click Routing script in the navigation panel.

<figure><img src="https://docs.telcobridges.com/w/images/f/f4/CreateRoutingScript_0.png" alt=""><figcaption></figcaption></figure>

\
2- Edit your main script

<figure><img src="https://docs.telcobridges.com/w/images/a/ac/ImportRoutingScript_0.png" alt=""><figcaption></figcaption></figure>

3- The Lawful Intercept filter is activated as follows:

* Include the 'Lawful intercept' module in your routing script: *require 'base\_routing'*
* Include the LawfulIntercept class: *include LawfulIntercept*
* Add the Lawful Intercept "after\_filter" to your script: *after\_filter :method => :enable\_lawful\_intercept*

**Script example**

```
require 'base_routing'

require 'lawful_intercept'                                # <- Add this line here

class SimpleRouting < BaseRouting
  include LawfulIntercept                                 # <- Add this line here
 
  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
  
  after_filter :method => :enable_lawful_intercept        # <- Add this line here
end

@@routing = SimpleRouting.new

def init_routes( routes )
  @@routing.init routes
end

def route( call, nap_list )
  @@routing.route call, nap_list
end
```


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