Unfinished

For small systems with less than 10 extensions, it's probably not worth installing and configuring the End Point Manager. If you have lots of extensions, read on.

Commercial (cheap and more capable) EPM:

http://schmoozecom.com/endpoint-manager.php

http://wiki.freepbx.org/display/FCM/EndPoint+Manager+Admin+User+Guide

Free OSS EPM:

Just install the OSS End Point Manager FreePBX module.

http://www.the159.com/endpointman/tut.html

http://www.freepbx.org/forum/general-help/help-provisioning-polycom-phones-with-endpoint-manager

See also dnsmasq

Enable the TFTP server function of DNSMasq:

vi /etc/dnsmasq.conf

# Enable dnsmasq's built-in TFTP server
enable-tftp

# Set the root directory for files availble via FTP.
tftp-root=/tftpboot

mkdir /tftpboot
chown -hR root:asterisk /tftpboot/
chmod g+w /tftpboot/

service dnsmasq restart

Connectivity → OSS End Point Manager Advanced Settings

1. Go to the configuration page and install firmware for the brand/model of phones you have.
2. Go to the advanced settings and enter the server ip address and set it to HTTP - update globals.
3. Go to device list and scan for your phones.
4. Add the phones and configure the extensions (lines) they will be using.
5. You will also need to enable option66 on your dhcp server so the phones get the config on boot.