Grandstream HT812/KZ

Telephony interfaces
Two (2) FXS ports

Network interfaces
Two (2) 10/100/1000Mbps RJ45 ports

LED indicators
POWER SUPPLY, LAN, WAN, PHONE1, PHONE2

Reset button to factory settings
Yes

Telephony functions
Number detection and number detection blocking, call waiting,
flash, blind or accompanied translation, redirection, hold, do not
disturb, 3-way conference

Speech encoders
G.711 with Appendix I (PLC) and Appendix II (VAD/CNG), G.722, G.723.1,
G.729A/B, G.726, iLBC, OPUS, dynamic jitter buffer, advanced
line echo compensation

Fax by IP
Fax relay of the third group of the standard T.38 with support
for data transfer rates up to 14.4 kbit/s and auto-switching in G 711 for fax transmission

Call distance for short-range/long-distance communication
3 REN, up to 1 km on 24AWG line

Caller ID
Bellcore Type 1 and 2, ETSI, BT, NTT, and DTMF-based CID

Network protocols
TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS, DHCP, NTP,
TFTP, SSH, STUN, SIP (RFC3261), SIP over TCP/TLS, SRTP*, TR-069

QoS
Layer 2 (802.1Q VLAN, SIP/RTP 802.1p) and Layer 3 (ToS, Diffserv, MPLS)

DTMF method
In-audio, RFC2833 and/or SIP INFO

Setup and management
HTTP, HTTPS, SSH, TFTP, TR-069, secure and automated configuration
using AES encryption, system log

Wednesday
SRTP*

Control
TLS/SIPS/HTTPS

Management
System log support, SSH, remote management
using a web browser

Universal power
supply Input: 100-240VAC, 50-60Hz Output: 12V/0.5A

Environmental characteristics
Working: 32º – 104ºF or 0º – 40ºC Storage: 14º – 140ºF or -10º – 60ºC
Humidity: 10 – 90% Non-condensing

Dimensions and weight
28.5 x 130 x 90 mm (H x W x D) Weight: 353.33g