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1. Install your favorite flavor of Linux.  We currently suggest CentOS 6.8 or better.
2. Install apache with the mod_cache add-in.
3. Create a /etc/httpd/conf.d/noctel.conf file with the following contents:

   <IfModule mod_disk_cache.c>

    CacheRoot /var/www/cache/

    CacheEnable disk /

    CacheDirLevels 5

    CacheDirLength 3

    CacheMaxExpire 86400

    ProxyRequests On

    ProxyVia On

    ProxyPass /polycom http://noctel.com/polycom/

    ProxyPassReverse /polycom http://noctel.com/polycom/

   </IfModule>

   <VirtualHost *:80>

    DocumentRoot /var/www/html/

    ServerName noctel-local-cache

    ErrorLog logs/noctel-error_log

    CustomLog logs/noctel-access_log common

   </VirtualHost>

    

   
   

4. Start or reload your apache configuration.  This can typically be done by issuing the /etc/init.d/httpd restart or services httpd restart command.
5. Ensure your firewall / iptables is open for the phones to access port 80.
6. Configure your DNS server to answer to the IP of your web server for ONLY firmware.noctel.com.  You will need to create an A record for this.

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