User's Guide

P a g e | 13
HT81x User Guide
HT81X Technical Specifications
The following table resumes all the technical specifications including the protocols/standards supported,
voice codecs, telephony features, languages and upgrade/provisioning settings for the HT81X.
Table 2: HT81X Technical Specifications
Interfaces
Telephone Interfaces
Two (2) RJ11 FXS ports for HT812.
Four (4) RJ11 FXS ports for HT814.
Eight (8) RJ11 FXS ports for HT818
Network Interface
Two (2) 10/100/1000 Mbps Ethernet port (RJ45).
LED Indicators
POWER, LAN, WAN, PHONE1 and PHONE2 for HT812.
POWER, LAN, WAN, PHONE1, PHONE2, PHONE3 and PHONE4 for
HT814.
POWER, LAN, WAN, PHONE1, PHONE2, PHONE3, PHONE4, PHONE 5,
PHONE 6, PHONE 7 and PHONE 8 for HT818.
Factory Reset Button
Yes.
Voice, Fax, Modem
Telephony Features
Caller ID display or block, call waiting, flash, blind or attended transfer,
forward, hold, do not disturb, 3-way conference.
Voice Codecs
G.711 with Annex I (PLC) and Annex II (VAD/CNG), G.723.1, G.729A/B,
G.726, iLBC, OPUS, dynamic 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 Ring
Load
- 3 REN, up to 1km on 24AWG line for HT812.
- 2 REN, up to 1km on 24AWG line for HT814 and HT818.
Caller ID
Bellcore Type 1 & 2, ETSI, BT, NTT, and DTMF-based CID.
Disconnect Methods
Busy Tone, Polarity Reversal/Wink, Loop Current.
Signaling
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 Methods
In-audio, RFC2833 and/or SIP INFO.
Provisioning and
Control
HTTP, HTTPS, SSH, TFTP, TR-069, secure and automated provisioning
using TR069, syslog.
Security
Media
SRTP.
Control
TLS/SIPS/HTTPS.
Management
Syslog support, SSH, remote management using web browser.