Have you tried security oriented distro Operator.iso by ussysadmin.org? It is based on knoppix and debian. Also it is one of the best network testing and pen testers tool?
Grandstream GS-HT802 2 Port Analog Telephone Adapter VoIP Phone & Device, Black
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Polycom VVX 411 IP VOIP POE Gigabit Telephone [L/N] BUSINESS OFFICE RECEPTION
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MagicJack - HOME VoIP Telephone Adapter 12 Months of Service - Black New Sealed
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Grandstream HT801 Single-Port Analog Telephone Adapter
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Yealink SIP-T54W 16-Line Color Display Business VoIP Phone /w Built-in Bluetooth
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Cisco CP-7945G VOIP Phone With Stand & Handset Business IP Phone 7945
$3.00
Yealink SIP-T54W 16-Line Color Display Business VoIP Phone /w Built-in Bluetooth
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Cisco 7962 Series CP-7962G Unified VoIP IP Business Phone
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