Process redirection to other SIP/ISDN/SS7/Sigtran/CAS endpoints

Applies to version(s): v2.8 and above

In this scenario, the incoming call is sent to a SIP redirect server, which returns a 3xx message and a new call is sent to any other networks, be it SIP, ISDN,SS7, SIGTRAN, CAS.

This is the call flow of such a scenario. A 302 Moved temporarily is returned from the SIP redirect server and new calls are made to different networks. The calls going to SS7 will need a called number prefix of 888, for ISDN 666 and for SIP 777.

Configure Routing Scripts	Configure NAP	Configure NAP Colums	Configure Routes
Configure Routing scripts Routing Scripts -> Import Script File File-> redirect_routing.rb ScriptType-> Customer Load on startup -> unchecked Routing Scripts -> Select Main Script At start of script: require 'redirect_routing' In the main class: include RedirectQuery before_filter :method => :redirect_query	Configure NAP NAP -> Create New NAP Name-> NAP_REDIRECT_SERVER_A Proxy address-> x.x.x.x (IP of SIP redirect server) You can add more SIP redirect server as needed NAP -> Create New NAP Name-> SIP_NAP_ANY Proxy address-> NONE This will allow calls to be redirected to any IPs using this SIP transport Server	In NAP Columns, set the following: NAP Columns -> Create New Nap Column Name -> server_type Type Attributes -> NORMAL|REDIRECT Default -> NORMAL Select REDIRECT for each NAP that is a SIP Redirect server and you can prioritize with group (lowest value is highest priority) and weight (to load balance)	When you Configure Routes, set the following: Routes -> Create New Static Route Name -> To_SIP_Endpoints NAP -> any Called -> /^(777)([0-9]*)$/ Remapped_NAP -> SIP_NAP_ANY Remapped Called -> /^(777)([0-9]*)$/\2/ Routes -> Create New Static Route Name -> To_SS7_Endpoints NAP -> any Called -> /^(888)([0-9]*)$/ Remapped_NAP -> SS7_NAP Remapped Called -> /^(888)([0-9]*)$/\2/ Routes -> Create New Static Route Name -> To_ISDN_Endpoints NAP -> any Called -> /^(666)([0-9]*)$/ Remapped_NAP -> ISDN_NAP Remapped Called -> /^(666)([0-9]*)$/\2/

These settings are set by default, but may be verified if some changes were made in the default configuration:

 SIP -> Header Parameters -> Use legacy redirection mode [unchecked] ( old naming convention was: Allow Recurse)
 Profiles -> Edit Reason Cause Mapping -> 302 Moved temporarily-> Route retry action -> Process Call Routing
 gateway -> use Script -> default_routing_script

Files used for routing scripts

Redirect to SIP, ISDN, SS7 file