GNTU 1520 (Enhanced Model of Scorpio 1520JR) is a high-speed G.SHDSL.bis router supports both ATM & EFM mode. Understanding the popular needs of both bandwidth and routing functions, GNTU 1520 is designed to provide the business customer a high performance standalone unit with rich of routing features via single/two pairs G.SHDSL.bis line. Strongly committed to friendly configuration, GNTU 1520 has the Web-based and GUI-based configuration features for configuring the unit in the easiest way ever. There is a Dying-gasp circuit which supports remote power failure detection and indication.
Model
- GNTU 1520-402/2W, 2-wire, 4 Ethernet ports
- GNTU 1520-404/4W, 4-wire, 4 Ethernet ports
- GNTU 1520-408/8W, 8-wire, 4 Ethernet ports
G.SHDSL.bis Link
- Downstream and upstream symmetrical data rates up to 60M in EFM with 4 pairs DSL line
- ITU G.991.2 Annex A ,B,F,G
- Line Code: TC-PAM 16/32/128
- EFM bonding and SHDSL M-pair mode for 1/2/4 pairs
- Fixed/ Auto rate negotiation : compliant G.994.1
- STU-C/STU-R mode selectable
- Impedance: 135 ohm
- Performance monitoring: (error seconds, severely error seconds, unavailability seconds)
- SNR /Attenuation Value calculation
ATM Specification
- ATM adaptation layer type 5 (AAL5)
- VC multiplexing and LLC encapsulation
- Multi-protocol over AAL5 (RFC 1483/2684 bridged and routed PDU)
- Classical IP over ATM (RFC 1577 with MTU = 1500)
- 1 PVCs
- ATM QoS CBR, UBR, VBR, VBR-rt support
- UNI 3.1/4.0 PVC
- I.610 OAM F5 loopback
Physical interfaces
- 4 ports RJ45 for 10/100Mbs Ethernet LAN connection
- 2 RJ-11 port for G.SHDSL.bis connection
- 1 console port for local configuration and management
PPP Support
- PPP (RFC 1661)
- PPP over AAL5 (RFC 2364)
- PPP over Ethernet (RFC 2516)
- User authentication with PAP/CHAP
Bridging
- IEEE 802.1D transparent learning bridge
- Up to 1K MAC learning addresses
Routing Capability
- Support IP/TCP/UDP/ARP/ICMP protocols
- IP routing with static routing and RIPv1/RIPv2 (RFC1058/2453)
- Network address translation (NAT/PAT) (RFC1631)
- DNS relay and caching (RFC1034/1035)
- DHCP server (RFC2131/2132)
- Support RIPv1 / RIPv2
- Support IP / MAC / DNS Filter
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