G.SHDSL.bis Bridge/Router



The Planet new SHDSL family member, GRT-501, is the G.SHDSL.bis router that complies with ITU-T G.991.2 standard and provides affordable, flexible, and efficient Internet access solution for SOHO and Small Medium Business environment. The GRT-501 supports business-class and multi-range from 192kbps to 5.7Mbps (2-wire) symmetric data rates and also can be connected as the LAN-to-LAN network connection in the distance up to 6.7km (4.2 miles) by using existing telephone copper wires.
The Planet GRT-501 is integrated with high-end Bridging / Routing capabilities, advanced functions of DMZ, Virtual Server, and VPN pass-through. Because the network environment grows rapidly, Virtual LAN has become more and more important feature in internetworking industry. The GRT-501 supports IEEE 802.1Q VLAN over ATM network.

With the built-in Simple Network Management Protocol (SNMP) and web-based management, the GRT-501 offers an easy-to-use platform-independent management and configuration facility. The GRT-501 also provides Command-Line Interface, it can be accessed via Telnet and the console port. The network administrators can manage the device by proper ways. 
Ordering Information
GRT-501 G.SHDSL.bis Bridge / Router ( 1 x RJ-45, 1 x RJ-11 )


G.SHDSL.bis Bridge Router 
Ethernet Distance extension
The GRT-501 is excellent for Ethernet to extend distance over existing telephone wires. With just one pair of AWG-26 copper wire, it is easy to connect two Ethernet networks far away (maximum 6.7km / 4.2miles). 

ISP Solution
G.SHDSL.bis is the best solution to quickly provide cost-effective, high speed network service to SME and SOHO users which need high-speed symmetrical Internet connections. By utilizing the existing telephony infrastructure, network installation is simple and straightforward. With up to 5.7Mbps full duplex speed, IP telephony, website hosting and various broadband applications can be easily provided. 
Ordering Information
GRT-501 G.SHDSL.bis Bridge / Router ( 1 x RJ-45, 1 x RJ-11 )

Key Features

• High Speed Symmetric Data Transmission
 The GRT-501 supports the latest G.SHDSL.bis technology and provides the higher 
 symmetric data rate up to 5.7 Mbps on 2 wires

• CO and CPE side Support
 Provides the back-to-back connection

• IEEE 802.1Q VLAN Support
 The GRT-501 supports the IEEE 802.1Q Tagged VLAN, and it offers significant 
 benefit in terms with efficient usage of bandwidth, flexibility performance and 

• Bridge and Router Mode
 The GRT-501 supports two connection modes. Currently, it comes pre-configured 
 with routing mode. Please note that routing mode and bridging mode cannot be used 

• Virtual Server
 This feature allows Internet users to access Internet servers on local LAN. The 
 required setup is quick and easy

• VPN Pass through Support
 PCs with VPN (Virtual Private Networking) software using PPTP, L2TP and IPSec are 
 transparently supported - no configuration is required

• DMZ Support
 The GRT-501 can translate public IP addresses to private IP address for allowing 
 unrestricted 2-way communication with Servers or individual users on the Internet. 
 This provides the most flexibility to run programs which could be incompatible in 
 NAT environment

• RIPv1 / v2 Routing
 It supports RIPv1 / v2 routing protocol for routing capability

• Simple Network Management Protocol (SNMP)
 It is an easy way to remotely manage the router via SNMPv1 / v2

• Fully ATM protocol stack implementation over G.SHDSL.bis

• PPPoA and PPPoE support user authentication with PAP / CHAP / MS-CHAP
Ordering Information
GRT-501 G.SHDSL.bis Bridge / Router ( 1 x RJ-45, 1 x RJ-11 )


Product G.SHDSL.bis Bridge Router
Standard Compliant with ITU-T G.991.2 Standard Annex A / B 
Compliant with G.SHDSL.bis Annex A / B / F / G 
TC-PAM Line Code 
Symmetric data transmission speed up to 5.7 Mbps on 2-wire 
Multi-range from 192kbps to 5.7Mbps
Protocol RFC 1577 - Classical IP over ATM (RFC 1577)
RFC 2364 - PPP over ATM
RFC 1483 / 2684 - Ethernet over ATM
RFC 2516 - PPP over Ethernet (fixed and dynamic IP)
RFC 2364 - PPP over ATM (fixed and dynamic IP)
AAL and ATM Support Supports up to 8PVCs 
ATM Forum UNI 3.1 / 4.0 PVC 
Supports OAM F4 / F5 AIS / RDI and loopback 
VC multiplexing and SNAP / LLC 
Integrated ATM QoS support (UBR,CBR,VBR-rt, and VBR-nrt) 
LAN Port 1 x 10Base-T / 100Base-TX ( Auto-Negotiation, Auto MDI / MDI-X)
Console 1 x RS-232 (DB9)
Button 1 x Reset Button
LED Indicators PWR, WAN LNK / ACT, LAN 10M/100M, ALM
Protocol IEEE 802.1D transparent learning bridge
Supports IP / TCP / UDP / ARP / ICMP / IGMP protocols
IP routing with static routing and RIPv1 / RIPv2
IP multicast and IGMP proxy
Network address translation (NAT / PAT)
DMZ host / Multi-DMZ / Multi-NAT function
Virtual Server (RFC1631)
DNS relay and caching
DHCP server, client and relay
Security Built-in NAT Firewall
PPP over PAP (RFC1334)
PPP over CHAP (RFC1994)
Password protection for system management
VPN VPN (PPTP / L2TP / IPSec) pass-through
Management Web-based configuration
Command-line Interpreter (CLI) via Console
Command-line Interpreter (CLI) via Telnet
Upgrades Software via web-browser / TFTP server
SNMPv1 and v2
Environment Specification
Dimension (W x D x H) 145 x 188 x 33 mm
Power 9V DC, 1A
Temperature Humidity Operating: 0~45 Degree C, 0~90% (non-condensing), 
Storage: -10~70 Degree C, 0~95% (non-condensing)
Emission FCC, CE

Ordering Information
GRT-501 G.SHDSL.bis Bridge / Router ( 1 x RJ-45, 1 x RJ-11 )



Date Version Description Download
2007-11-24 1.0 GRT-501


Date Version Description Download
2011-07-22 4.20 1. Fixed Auto Fall Back at 4wire link up mode, speed only 5.7Mbps.
2. Supports EFM mode (based on chipset).
2010-04-23 4.05 Upgrade ATM chipset and pin to pin compatibility
2008-09-12 4.04 Improve the DSP Driver from 153.005 to 157.002
2007-11-21 4.02 Release Version: 4.02

User's Manual

Date Version Description Download
2007-11-21   GRT-501 G.SHDSL.bis Bridge Router User's Manual

EC Declaration

Date Version Description Download
2008-01-25   EC Declaration
Ordering Information
GRT-501 G.SHDSL.bis Bridge / Router ( 1 x RJ-45, 1 x RJ-11 )