User's Manual

FIRMWARE VERSION 1.0.0.5 HT802 USER MANUAL Page 11 of 46
HT802 FEATRUES
The HT802 is a full feature voice and fax-over IP device that offers a high-level of integration including a
10M/100Mbps network port and one FXS telephone port, market-leading sound quality, rich functionalities,
and a compact and lightweight design. The VoIP network signaling protocol supported is SIP. The HT802
is fully compatible with SIP industry standard and can interoperate with many other SIP compliant devices
and software on the market. Moreover, it supports comprehensive voice codecs including G.711 (a/µ-law),
G.723.1, G.726-32, G.729 and iLBC.
SOFTWARE FEATURES OVERVIEW
 Supports Voice Codecs:
 G.711 (a/µ-law), G.723.1, G.726-32, G.729 and iLBC.
 T.38 Fax
 Comprehensive Dial Plan support for Outgoing calls.
 G.168 Echo Cancellation
 Voice Activation Detection (VAD), Comfort Noise Generation (CNG), and Packet Loss
Concealment (PLC)
 Supports PSTN/PBX analog telephone sets
TABLE 3: HT802 SOFTWARE FEATURES
Telephone Interfaces
2 FXS ports
SIP Provisioning
2 Sip Accounts
Number of
Concurrent Calls
2 Concurrent Calls
Voice over Packet
Capabilities
Voice Activity Detection (VAD) with CNG (comfort noise generation) and PLC (packet loss
concealment), Dynamic Jitter Buffer, Modem detection & auto-switch to G.711, Packetized
Voice Protocol Unit (supports RTP/RTCP protocol), G.168 compliant Echo Cancellation,
LEC (line echo cancellation) with NLP, Asymmetric RTP stream
Voice Compression
G.711 + Annex I (PLC), Annex II (VAD/CNG format) encoder and decoder, G.723.1, G.726-
32(ADPCM), G.729, iLBC, G.726-32 provides proprietary VAD, CNG, and signal power
estimation, Voice Play Out unit (reordering, fixed and adaptive jitter buffer, clock
synchronization), AGC (automatic gain control), Status output, Decoder controlling via voice
packet header