Grandstream Networks HT818 Administration Manual page 3

Interfaces
Telephone
Eight (8) RJ11 FXS ports
Interfaces
Network Interface Two (2) 10/100/1000 Mbps Ethernet port (RJ45).
LED Indicators POWER, LAN, WAN, PHONE1, PHONE2, PHONE3, PHONE4, PHONE 5, PHONE 6, PHONE 7 and PHONE 8.
Factory Reset
Yes.
Button
Voice, Fax, Modem
Caller ID display or block, call waiting, flash, blind or attended transfer, forward, hold, do not disturb, 3-way
Telephony Features
conference.
G.711 with Annex I (PLC) and Annex II (VAD/CNG), G.723.1, G.729A/B, G.726, G722, iLBC, OPUS, dynamic
Voice Codecs
jitter buffer, advanced line echo cancellation.
Fax over IP T.38 compliant Group 3 Fax Relay up to 14.4kpbs and auto-switch to G.711 for Fax Pass-through.
Short/Long Haul
2 REN, up to 1km on 24AWG line
Ring Load
Caller ID Bellcore Type 1 & 2, ETSI, BT, NTT, and DTMF-based CID.
Disconnect
Busy Tone, Polarity Reversal/Wink, Loop Current.
Methods
Signaling
TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP, FTP/FTPS, SSH, STUN, SIP
Network Protocols
(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 Methods In-audio, RFC2833 and/or SIP INFO.
Provisioning and
HTTP, HTTPS, FTP, FTPS, SSH, TFTP, TR-069, secure and automated provisioning using TR069, syslog.
Control
Security
Media SRTP.
Control TLS/SIPS/HTTPS.
Management Syslog support, SSH, remote management using web browser.
Physical
Input: 100-240VAC, 50-60Hz
Universal Power
Supply
Output: 12V/1.5A.