[asterisk-users] I found an excellent guide: Configure Asterisk VoIP IP PBX SIP Server with Cisco IP Phones

[Doug Lytle]

>>> Also, you will need a TFTP server working on your Asterisk box

My suggestion would be to get a refurbished Polycom VVX 301 phone (With power brick if no POE is avaiable) for around $27 US.

Doug