Best British Telecom IP Phones with SIP VoIP Signaling Protocol
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$30.00 Est. at AmazonPositives: Protocol: TFTP,DHCP,ICMP, Codec: G.728,G.711,G.723.1,G.722,G.168 (Echo Cancellation),G.729AB, Networking Connectivity: 2 x RJ 45 - 10/100 Base-TX (Ethernet), QoS: ToS,DiffSer
