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Yealink SIP-T28P Executive IP Phone w/POEBrand: YealinkType: Wired VoIPSecurity: HTTPS (server/client)
SRTP (RFC3711)
Transport Layer Security (TLS)
VLAN (802.1 pq), QoS
Digest authentication using MD5/MD5-sess
Secure configuration file via AES encryption
Phone lock for personal privacy protection
Admin/user configuration modePorts: 1xRJ9 (4P4C) handset port, 1xRJ9 (4P4C) headset port, 2xRJ45 10/100M Ethernet ports, 1xRJ12 (6P6C) expansion module portModel #: YEA-SIP-T28P
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snom SNO-821-BK 821 VoIP Phone - BlackBrand: snomType: TelephoneSecurity: HTTPS (server/client)
Transport Layer Security (TLS)
SRTP (RFC 3711), SIPS, RTCP, VLAN (IEEE 802.1X)
LLDP-MEDPorts: 2 x IEEE 802.3/1 Gigabit Switch
USB Type AModel #: SNO-821-BK
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Yealink SIP- T31P Entry-level IP Phone with 2 Lines & HD voiceBrand: YealinkPart Number: SIP-T31PType: VoIP PhonesSecurity: NETWORK AND SECURITY
SIP v1 (RFC2543), v2 (RFC3261)
Call server redundancy supported
NAT traversal: STUN mode
Proxy mode and peer-to-peer SIP link mode
IP assignment: static/DHCP
HTTP/HTTPS web server
Time and date synchronization using SNTP
UDP/TCP/DNS-SRV (RFC 3263)
QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP
SRTP for voice
Transport Layer Security (TLS 1.3)
HTTPS certificate manager
AES encryption for configuration file (AES256)
Digest authentication
OpenVPN, IEEE802.1X, L2TP VPN
IPv6
LLDP/CDP/DHCP VLAN
ICE
WPA2/WPA3
Secure boot
GARP (Generic Attribute Registration Protocol)Model #: SIP-T31P
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