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SIP and the Internet
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4. Cisco IP Phone 7960/40 Administrator Guide for SIP, Version 3.0 - Product Overview (Version 3.0) [Cisco SIP IP Phone Software] - Cisco
Yealink SIP-T33G IP Phone 4 VoIP Accounts 2.4-Inch Color Display Dual-Port Gigabit Ethernet 802.3af PoE
Fanvil Enterprise IP Phone with 20 SIP Lines Dual Gigabit Port PoE Integrated
