The G501 is powerful, affordable, high quality and manageable IP telephony ATA/IAD for next generation network. Its compact size, excellent voice quality, packed feature functionality and best-in-class price-performance point enable consumers to maximize the power of IP voice and data connectivity.

The G501 is based on SIP V2 standard and compatibility with most service providers. It features 1 FXS telephone port, 1 PSTN lifeline port, dual 10M/100Mbps Ethernet ports, hardware wire-speed NAT router and a base stand for vertical positioning.

 . Built-in Hardware Wired Speed NAT Router
 . Real time FAX over IP via T.38 and T.30 FAX with G.711
 . VoIP/PSTN function selection switch
 . VPN Passthrough (PPTP, L2TP and IPSec)
 . Field proven compatibility and stability

I/O Interface
2 10/100Mbps Ethernet ports (2 RJ45, 1 WAN, 1 LAN)
1 FXS Port (1 RJ11)
1 PSTN life line Port (1 RJ11)
1 Switch button for VoIP/PSTN function options

Voice Codec
G.711 (A-Law, u-Law) with PAMS above 4.3
G.729A/AB with PAMS above 4.0
Adaptive Jitter Buffer Management
Voice Activity Detection
Comfort Noise Generation
Echo Cancellation

Application
Mac address cloning
SIP proxy redundancy
_dynamic via DNS SRV, A records
Direct IP to IP calling
NAT Traversal by STUN
DMZ and Super DMZ
Built-in Wired speed NAT Router
DHCP Server and Client
IP conflict detection
VPN Passthrough (PPTP,L2TP and IPSec)
VirtrualServer for Port Mapping
Speed Limit
QoS with Layer 2 (802.1Q VLAN, 802.1p) and Layer 3 (ToS, DiffServ)
ARP spoofing prevention

Management
Firmware Upgradeable
Web and IVR-driven Management Interface (TFTP, HTTP, HTTPS)
Local and Remote Syslog (RFC3164)
Auto Provisioning and SNMP V2
SNTP Time Synchronization
Multi User Level

Fax over IP
T.38 compliant Group 3 Fax Relay up to 14.4kpbs, T.30 Fax with G.711

Call Features
3-way conference, Music on hold, Call hold/forwarding/mute/transfer/waiting
Caller ID and CWCID, DTMF Relay- In-band, Out-band and SIP info
Hotline, Short Dial, Call Block, Dial Rule