Siemens HiPath HG1500

The HiPath HG1500 transforms the HiPath 3000 series into a communication server in the LAN. HiPath HG1500 permits the direct connection of Ethernet LANs (10/100 Mbit/s) to the HiPath 3000 series . This makes voice, fax, and data communication possible via the ISDN network from any PC networked via the LAN.

HiPath HG1500 includes an H.323 gateway which supports Voice-over-IP. The HiPath 3000 series form the interface to the company's Ethernet LAN, allowing communication solutions and applications with multi-station capability to be implemented with the HiPath 3000 series.

Gateway Functions
Depending on the required bandwidth, HiPath HG1500 makes flexible use of the ISDN lines and LCR intelligence of the HiPath system for voice, fax, and data communication. No external routers, no additional servers or ISDN PC cards are required for LAN PCs because the router functionality, firewall functions, and security are already integrated in HiPath HG1500. It can be incorporated in a standardised network management system with SNMP, i.e. administration, alarm, and performance management in a central management platform.

LAN-LAN coupling
Through LAN-LAN coupling, Ethernet LANs at different locations are linked into a single corporate network using ISDN dialup lines. This makes it possible for outside locations to access central files or files at other locations, meeting the requirement for interactively combining workflows in organisational units at different locations.

Remote LAN access
By linking PCs that are installed outside the corporate LAN, an authorised group of people can be allowed to access central DP applications and information sources from an external location. This means home workers can access the same LAN services as users of PCs connected to the corporate LAN (data, e-mail, PC programs).

Access control
Access control (firewall) prevents unauthorised persons from accessing the corporate LAN. The firewall mechanisms are:

• ISDN call number checking
• Automatic callback without setting up an ISDN toll call
• Checking the IP or IPX addressing
• MAC firewall (checking the MAC/IP address combination in the internal LAN)
• Port filtering - Enabling and disabling services according to IP addresses