View source for Adding ENUM Query for LNP to Routing Script

{{DISPLAYTITLE:Adding ENUM Query for LNP to Routing Script}}

{| class="wikitable"
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|rowspan="3"|This article applies to:
|'''Product'''
|'''Version'''
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|SBC
|3.0, 3.1
|}

This article describes how to integrate a routing script filter that sends ENUM queries for Local Number Portability, and enables ENUM name resolution support on ProSBC.

=ProSBC Configuration=
This section provides ProSBC configuration for the solution.

==Install dnsruby gem==

'''1. Automatic Installation'''
:gem install dnsruby -v1.54
:tbtoolpack stop
:tbtoolpack start

'''2. Manual Installation'''
*Download the gem from https://rubygems.org/downloads/dnsruby-1.54.gem 
*Upload to SBC with sFTP
:gem install --force --local dnsruby -v1.54
: tbtoolpack stop
:tbtoolpack start

==Configure Routing Script==

'''1. Enable routing script'''
:Gateway->Use script

'''2. Load routing scripts'''
*Gateway->Routes->Routing Script->Import Script File
*File->naptr_called_replacement.rb
**ScriptType->Filter
:Load on startup->checked

'''3. Adding ENUM script to main script'''
:Gateway->Routes->Routing Script->simple_routing_sbc.rb [Edit]

Three things need to be added.<br>  
At the start of the script:<br> 
<pre>require 'called_pre_remap' </pre> 
In the main class:<br> 
<pre>include EnumLNP
</pre> 
<pre>before_filter :method => :naptr_called_replacement
</pre>
[[:File:ENUM_Script.zip|Click here to download naptr_called_replacement.rb Routing Script]]

==Modifying ENUM Script==

1. To set ENUM server IP in the script modify the following script parameter in the naptr_called_replacement.rb:
<pre>res = Dnsruby::Resolver.new (:nameserver => ['IPaddress'])  IP address must be ENUM Server IP address
</pre>

2. To set the Domain Name for ENUM queries, change the following parameter in the naptr_called_replacement.rb:
<pre> $domain = "IPAddress/FQDN" 
</pre>
   Query examples;
   8.6.8.0.4.7.2.0.3.5.0.9.e164.arpa, e164.arpa is the domain
   8.6.8.0.4.7.2.0.3.5.0.9.e164.arpa.net, e164.arpa.net is the domain
   8.6.8.0.4.7.2.0.3.5.0.9.telcobridges.com, telcobridges.com is the domain
   8.6.8.0.4.7.2.0.3.5.0.9.187.202.34.12, 187.202.34.12 is the domain

3. In the answer check the Service and update the script. Service can be returned in the following  and other formats;
  Service: E2U+SIP, Service: E2U+sip, Service: SIP+E2U, Service: sip+E2U and others
<pre>if a.service == "sip+E2U" || a.service == "SIP+E2U" ==> Change it here
</pre>

4. In the answer, ENUM server can return "." or "@" or any other character in the regex after the number;
 if it is "."
 params[:call][:called] = tb_naptr_query("#{naptr_called}.#{$domain}", params)
 
 if it is "@"
 params[:call][:called] = tb_naptr_query("#{naptr_called}@#{$domain}", params)