More Images

This specification defines an external DOCSIS-based HomeGateway product, HomeGater 1000, for high-speed Internet access applications.   The HomeGater 1000 is designed to operate on two-way cable plants.   By additional software enhancements, it allows this product to work on one-way cable plants inconjunction with a traditional analog modem as well.  The data transmission rate on the cable connection is asymmetric.  The downlink rate, from the cable headend to the modem, is up to 40 megabits per second; the uplink rate, from the cable to the headed, is up to 10 megabits per second.  Additional to the cable connection, this product also provides 4-port IEEE 802.3 10 base-T Ethernet (10 Mps) Hub and a USB port (12 Mbps) connections.

The cable modem functions as a bridging internetworking device to transmit and receive data between the cable interface and either Ethernet or USB interfaces.  The following diagram shows the cable CATV network configuration for the data application.

Features

Basic Features

• Function as a bridging internetworking device to provide data transmission service between the cable and Ethernet/USB interfaces.
• Generic filtering supports on the data link, network (IP/ICMP/IGMP), and transport (UDP/TCP) layers.
• Simple Network Management Protocol (SNMP) V1, standard MIBs and OLE Communications proprietary MIB support.
• 56/40 bit DES encryption/decryption support to the data traffic via the cable interface.
• RSA public/private key algorithm for the DES key exchange.
• DHCP client support via the cable interface.
• Time of Day protocol support for the software upgrade via the cable interface.
• Traffic shaping and data rate control to the data traffic over the cable interface.
• Seven LEDs display on the front panel to indicate the cable modem status.
• Y2K compliant.

Advance Features

The advance features will be implemented in later software releases.

• Spanning Tree Algorithm Protocol support.
• Function as a routing internetworking device to router data between the cable and Ethernet/USB interfaces.  Router Discovery Protocol will be supported.  Network Address Translation Protocol is an option.
• Quality of Service (QoS) and multiple service ID (application service flow) support with four upstream queues for delay-sensitive applications such as voice over IP.
• IGMP proxy support to reduce the upstream broadcast and multicast data traffic on the cable interface.
• Web-based (HTTP) management supports via both cable and Ethernet interface.
• SNMP V3 support.
• X.509 Directory Authentication service support for RAS public key retrieval.
• Work on one-way cable plants in conjunction with an analog modem.

Connectivity

• Cable interface, ITU J83A Annex A specification
  • Upstream: up to 10 megabit per second, 200-3200 KHz per channel.
  • Downstream: up to 40 megabit per second, 6 MHz per channel.
• Ethernet interface with 4 hub ports, 10 megabit per second - conforms to IEEE 802.3 10BASE-T specification.
• Universal Series Bus 12 megabit per second - conforms to USB 1.0 specification.

Performance

• Total bandwidth of up to 84 Mbps.
• Store-and-forward scheme to forward packets.
• Operates at maximum packet filtering and forwarding rate.
• Provides fram filtering and forwarding functions for each port, which are capable of filtering and forwarding of all Ethernet packets at a rate of 5000 packets per second.

Flexibility

• Automatic MAC address learning to build the routing information database.
• Automatic local traffic filtering.
• Transparent to high level protocols.
• Auto-scan various cable downstream frequency plans.

Reliability

• Filtering of erroneous frames (CRC error, fragment, and jabber).
• Report, log urgent events or issue trouble tickets via management Protocol.

• External
• Internal

MCNS-DOCSIS Home Gateway

MCNS-DOCSIS Internal Cable Modem

Y2K Compliance

With the approach of the new millenium, the Year 2000 problem becomes an increasingly important issue for companies which depend on information systems and related products to conduct their business.

products can be part of your Year 2000 solution, not part of the problem.  products are certified as Year 2000 compliant.  Our software will accurately address, present, produce, and calculate data involving dates beginning with January 1, 2000 and will not produce abnormally ending or incorrect results involving such dates as used in any forward or regression date based function.   Specifics details on Year 2000 compliance are defined in the software license agreement.

Product

wants to assure its customers of the Year 2000 compliance of its products.  The products listed below, and all versions of their corresponding software are deemed Year 2000 compliant.

• HomeGater 1000
• CableGater 1000