Product Overview
The HT502 is a full feature voice and fax-over IP device that offers a high-level of integration including dual
10M/100Mbps network ports with integrated router, NAT, DHCP server, dual port FXS telephone gateway,
market-leading sound quality, rich functionalities, and a compact and lightweight design. The VoIP network
signaling protocol supported is SIP. The HT502 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 (16/24/32/40 bit rates), AAL2 (all
G.726), G.729A/B/E and iLBC.
Software Features Overview
2 FXS ports
Two RJ-45 ports (switched or routed)
2 SIP accounts & profiles
Supports Voice Codecs:
o G711(a/µ, Annex I & II), G723.1A, G726 (ADPCM with 16/24/32/40 bit rates), G729 A/B/E,
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 or analog trunks
Table 4: HT502 Technical specifications
1 RJ45 for LAN, 10/100 Base-TX, Full Duplex
1 RJ45 for WAN,10/100Base-TX, Full Duplex
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