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Cisco CP-8851NR-K9= IP Phone 8851 - VoIP phoneBrand: CiscoType: AccessoriesSpecifications: Main Features: Multiple VoIP protocol support, integrated Ethernet switch
VoIP: Yes
VoIP Protocols: SIP, RTCP, RTP, SRTP, SDP
Voice Codecs: G.722, G.729a, G.711u, G.711a, iLBC, iSAC
Lines Supported: 5 lines
Quality of Service: IEEE 802.1Q (VLAN), IEEE 802.1p
IP Address Assignment: DHCP, static
Security: IEEE 802.1X, TLS
Power Over Ethernet (PoE) Support: Yes
Network Protocols: IP, TFTP, UDP, Cisco Discovery Protocol (CDP), HTTP, DNS, HTTPS, SRTP, Link Layer Discovery Protocol - Media Endpoint Discovery (LLDP-MED), RTCP, RTP
Network Ports Qty: 2 x Ethernet 10Base-T / 100Base-TX / 1000Base-T
Compatible Software: Cisco Unified Communications Manager 8.5.1 or later, Cisco Hosted Collaboration Solution, Cisco Unified Communications Manager Express 10.0 or later
Network Features: Class 3 PoE
Connec...Model #: CP-8851NR-K9=
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SMALL BUSINESS IP PHONE 3 SIPBrand: GrandstreamType: Office ProductsProtocols: SIP RFC3261, TCP / IP / UDP, RTP / RTCP, HTTP / HTTPS, ARP / RARP, ICMP, DNS (A record, SRV, NAPTR), DHCP, PPPoE, SSH, TFTP, NTP, STUN, SIMPLE, LLDP-MED, LDAP, TR-069, 802.1x, TLS, SRTPSecurity: User and administrator level access control, MD5 and MD5-sess based authentication, 256-bit AES encrypted configuration file, TLS, SRTP, HTTPS, 802.1x media access controlModel #: GXP1630
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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