.. _arch-PBR:

Architecture 
-------------

:ref:`phone-based-registration-feature-reference`

The VOSS-4-UC Phone Based Registration Add-on is implemented as a 
`Cisco Unified IP Phone Services Application <https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cuipph/all_models/xsi/9-1-1/CUIP_BK_P82B3B16_00_phones-services-application-development-notes/CUIP_BK_P82B3B16_00_phones-services-application-development-notes_chapter_01001.html>`_.

This operates a web service on the VOSS-4-UC platform that is installed on all
unified nodes in a VOSS-4-UC Cluster as follows:


|PBR-Network.png|

Figure 1: Phone Based Registration Network Connectivity


.. |PBR-Network.png| image:: /src/images/PBR-Network.png