Grandstream HandyTone 488 Analog Adapter
Ports: 1 LAN + 1 WAN + 1 FXS + 1 FXO
Supported Protocols: SIP
Product Description
The Grandstream HandyTone-488 (ATA-488) received the Best of Show award at the 2005 Internet Telephony Conference & Expo in Miami for its open standards and high sound quality. The ATA-488 has one FXS port, one FXS port and two Ethernet (RJ45) ports which allow you to connect an analog telephone or fax machine and a PC to an Ethernet network. The ATA-488 has a built in router, NAT, DHCP (client and server) and supports gateway and DMZ port forwarding. The ATA-488 can be configured through a web interface, an built-in IVR or can be can be configured via a central configuration file which eases mass installations. The HandyTone-488 uses powerful Digital Signal Processing (DSP), advanced adaptive jitter control and packet loss concealment technology to achieve the highest sound quality. the ATA-488 reduces the cost of deploying your Voice over IP network by simplifying the installation process and protecting your investment in analog equipment.
Product Features
Supports SIP 2.0(RFC 3261), TCP/UDP/IP, RTP/RTCP, HTTP, ICMP, ARP/RARP, DNS, DHCP (both client and server), NTP, PPPoE, STUN, TFTP, etc.
Includes a built in router, NAT, Gateway and DMZ port forwarding capable
Supports call origination and termination to/from PSTN (via FXO port)
Supports call origination and termination to/from PSTN (via FXO port)
Uses digital signal processing (DSP) to ensure highest audio quality; advanced adaptive jitter control and packet loss concealment technology
Support various vocoders including G.711 (a-law and u-law), G.723.1 (5.3K/6.3K), G.726 (40K/32K/24K/16K),
as well as G.728, G.729A/B, and iLBC.
Support Caller ID/Name display or block, Hold, Call Waiting/Flash, Call Transfer, Call Forward, in-band and out-of-band DTMF, Dial Plans, etc.
3-way conference calling capable
Support fax pass through and T.38 (pending)
Supports VAD (Voice Activity Detection), Silence Suppression, Line Echo Cancellation (G.168), CNG (Comfort Noise Generation),
and AGC (Automatic Gain Control)
Support standard encryption and authentication (DIGEST using MD5 and MD5-sess)
Supports Layer 2 protocols (802.1Q VLAN, 802.1p) and Layer 3 QoS features such as ToS, DiffServ & MPLS
Supports automated NAT traversal (not necessary to manually configure Firewall/NAT)
Device configuration via Web browser, built-in IVR, or central configuration file through TFTP or HTTP
Firmware upgrades via TFTP or HTTP with encrypted configuration files.
Compact and lightweight design (wallet size), perfect companion for road warriors
