General Knoppix support for those who've read the FAQ at the Wiki
Grandstream GS-HT802 2 Port Analog Telephone Adapter VoIP Phone & Device, Black
$32.00
Polycom VVX 411 IP VOIP POE Gigabit Telephone [L/N] BUSINESS OFFICE RECEPTION
$24.00
Grandstream GXP1615 Business HD IP VoIP Phone Small/Medium 1 Sip Account Device
$25.00
Cisco CP-7841 4-Line VoIP Phone
$62.99
Cisco CP-7945G VOIP Phone With Stand & Handset Business IP Phone 7945
$3.00
Lightly Used Cisco 8811 Series VoIP phone Factory Reset great condition
$19.95
Cisco/Linksys SPA2102 VoIP Phone Adapter Router 2FXS (Unlocked)
$16.99
Grandstream GS-HT802 2 Port Analog Telephone Adapter VoIP Phone Device
$17.50
Grandstream GS-HT802 2 Port Analog Telephone Adapter VoIP Phone & Device
$28.99
Grandstream GS-HT802 2 Port Analog Telephone Adapter VoIP Phone & Device, Black
$29.99