> 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/sip-and-voip/redirection.md).

# Redirection

In release 2.8 and above, redirection contacts are obtained from the routing engine in the following format:

```
contacts = params[ :contacts ]
contacts = {
```

> index=>"3", list=>\[ {:called\_number=>"6660", :priority=>"1000", :is\_number\_ported=>"0", :sip\_uri=>"", :raw\_data=>"", :expiration=>"3600"}, {:called\_number=>"6661", :priority=>"1000", :is\_number\_ported=>"0", :sip\_uri=>"sip:6661\@192.168.215.127", :raw\_data=>"<sip:6661@192.168.215.127>", :expiration=>"3600"} {:called\_number=>"6662", :priority=>"1000", :is\_number\_ported=>"0", :sip\_uri=>"sip:6662\@192.168.215.128", :raw\_data=>"<sip:6662@192.168.215.128>", :expiration=>"3600"}, {:called\_number=>"6663", :priority=>"1000", :is\_number\_ported=>"0", :sip\_uri=>"sip:6663\@192.168.215.129", :raw\_data=>"<sip:6663@192.168.215.129>", :expiration=>"3600"}, {:called\_number=>"6664", :priority=>"1000", :is\_number\_ported=>"0", :sip\_uri=>"sip:6664\@192.168.215.150", :raw\_data=>"<sip:6664@192.168.215.150>", :expiration=>"3600"} ], source\_indexes=>"nil,0,0,0,2" }

* `params[:contacts][:list]` contains the contact log. Each contact within the list has the following fields:
  * `:called_number` - the called number
  * `:is_number_ported` - if the called number has been ported (for SIP: if the npdi parameter is present)
  * `:ported_number` - the called number that was ported (for SIP: the rn parameter value, if available)
  * `:sip_uri` - the SIP URI of the contact, without the contact-params section (without the expires and q contact parameters)
  * `:raw_data` - the raw data representing the contact in the signaling protocol. For SIP, this is the full SIP URI (including the expires and q contact parameters).
  * `:priority` - the priority of the contact \[0-1000]
  * `:expiration` - the expiration time in seconds of the contact
* `params[:contacts][:index]` contains the index of the contact that is currently being routed.
* `params[:contacts][:source_indexes]` contains a comma-separated list of indexes from `params[:contacts][:list]`. Each index represents the contact from which the contact in the list was obtained from.

To get more information, see:

* [SIP Redirection Contacts Parameters in a Call Flow](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/api/sip-redirection-script-contacts-parameters/README.md)

![BackToMain](https://docs.telcobridges.com/w/images/1/1e/BackToMain.png)


---

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