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PoE(IEEE 802
58v DC Nom
Compatible with version 5 and above
Robust construction for exceptional reliability
The Siemens optiPoint 500 Advance Phone is only compatible with Siemens Telephone systems
Yealink SIP-T28P Enterprise IP Telephone Category_Best4Systems/Headsets/Wired Headsets/Free Wipe - Headsets PoE(IEEE 802Network Features SIP 2. 0(RFC3261) protocol, NAT traversal: STUN mode IP assignment: DHCP Static IP PPPoE Auto provision: firmware, configuration, ringtone, phonebook etc. QoS: IEEE 802. 1p q tagging (VLAN), Layer 3 ToS In band DTMF, Out band DTMF and SIP INFO DTMF Proxy mode and peer to peer SIP link mode Standard encryption and authentication(MD5 and MD5 sess) Phone Features Support up to 6 SIP accounts, Hotline, Emergency call Call hold, Call
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