Product Overview; Key Features - Grandstream Networks HT-488 User Manual

P
RODUCT OVERVIEW
HT488 is a next generation dual-port SIP IAD for Internet data, voice, and fax. It has rich features and
had the added functionality of a bridge that enables you to make remote calls over the internet.
K F
EY EATURES
Ethernet
DHCP
Ports
2 RJ45 Server/
(LAN/WAN) Client
T 2: HT488 T
ABLE ECHNICAL
Lines/SIP Accounts
Protocol Support
Feature Keys
LAN/WAN Interface
Device Management
DHCP Server/Client
Audio Features
Call Handling Features
Network and
Provisioning
Fax over IP
Security
Physical Design
Grandstream Networks, Inc.
FXS PSTN Pass
Port – through
1 Yes
S
PECIFICATIONS
2 lines / 2 SIP accounts
SIP 2.0 (RFC 3261), TCP/UDP/IP, RTP/RTCP, HTTP, ARP/RARP, ICMP, DNS, DHCP,
NTP, TFTP, PPPoE protocols
1 button
RJ-45 10 Mbps
Web interface or via secure (AES encrypted) central configuration file for mass
deployment
Support device configuration via built-in IVR, Web browser or central configuration file
through TFTP or HTTP
Support Layer 2 (802.1Q, VLAN, 802.1p) and Layer 3 QoS (ToS, DiffServ, MPLS)
Auto/manual provisioning system
NAT-friendly remote software upgrade (via TFTP/HTTP) for deployed devices including
behind firewall/NAT
Syslog support
Yes
Advanced Digital Signal Processing (DSP)
Dynamic negotiation of codec and voice payload length
Support for G.723,1 (5.3K/6.3K), G.729A, G.711 µ/A, G.726, and iLBC codecs
In-band and out-of-band DTMF ((in audio, RFC2833, SIP INFO)
Silence Suppression, VAD (voice activity detection), CNG (comfort noise generation),
ANG (automatic gain control)
Adaptive jitter buffer control
Packet delay & loss concealment
Support volume amplification
Support configurable Call Progress Tones
Caller ID display or block, Call waiting caller ID, Call waiting/flash, Call transfer, hold,
forward, mute, 3-way conferencing
Manual or dynamic host configuration protocol (DHCP) network setup; RTP and NAT
support traversal via STUN
T.38 compliant Group 3 Fax Relay up to 14.4kpbs and auto-switch to G.711 for Fax
Pass-through (pending), Fax Datapump V.17, V.19, V.27ter, V.29 for T.38 fax relay
DIGEST authentication and encryption using MD5 and MD5-sess
Stylish and compact design; small universal power supply, ideal for travel
HT488 User Manual
Firmware 1.0.3.64
Voice Mail
Voice Codec
Indicator
iLBC, G.723,
Yes G.711, G.729,
G.726, T.38
Remote
Configuration
TFTP/HTTP
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Last Updated: 4/2007