
HT502 User’s Manual 7
GLOBALINX®HT502 DTA
TABLE 3: HT502 TECHNICAL SPECIFICATIONS
Telephone Interfaces 2 FXS ports, 2 SIP accounts
Network Interface Two (2) 10M/100 Mbps, RJ-45
LED Indicators Power, WAN, LAN, PHONE1 and PHONE2
Reset Button Factory Reset button
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 and AAL2 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.723.1A, G.726(ADPCM), G.729A/B/E, iLBC, G.726
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
DHCP Server/Client Yes, NAT Router or Switched Mode
Telnet Server Yes
Fax over IP Compatible Yes
QoS Diffserve, TOS, 802.1 P/Q VLAN tagging
IP Transport RTP/RTCP
DTMF Method Flexible DTMF transmission method, user interface of In-audio,
RFC2833, and/or SIP Info
IP Signaling SIP (RFC 3261)
Provisioning TFTP, HTTP, HTTPS
Control TLS/SIPS , SIP over TCP/TLS
Management Syslog support, HTTPS and telnet, remote management using
Web browser, Support Layer 2 (802.1Q, VLAN, 802.1p) and Layer
3 QoS (Tos, DiffSery, MPLS), Auto/manual provisioning system
Dial Plan Yes
UPnP Yes
Power Output: 12VDC / Input: 100–240 VAC/50-60 Hz
Environmental Operational: 32o–104oF or 0o–40oC
Storage: 10o–130o F / Humidity: 10–90% Non-condensing
Dimensions (H x W x D) 115mm (L) x 75mm (W) x 27mm (H)
Short and long haul REN3: Up to150 ft on 24 AWG line
Call Handling Features Caller ID display or block, Call waiting caller ID, Call
waiting/flash, Call transfer, hold, forward, mute, 3-way confer-
encing, message waiting, Do-Not-Disturb (DND), call-return service
Caller ID Bellcore Type 1 & 2, ETSI, BT, NTT, and DTMF-based CID
Polarity Reversal / Wink Yes
EMC EN55022/EN55024 and FCC part15 Class B
Safety UL