The ATLAS 550 is an Integrated Access Device designed to improve and lower the costs of voice/data, video, and Internet communications for enterprise businesses and network service providers. With the ATLAS 550, many WAN functions have now been merged and combined into a small, economical, modular platform that will replace a rack of traditional single function access devices. With the ATLAS 550, traditional multiplexed and packet networks are easier to deploy and manage while providing more bandwidth efficiency out of existing or new communications links. The ATLAS 550 provides a new level of communications flexibility by offering many of the features previously found in larger central office, PBX, or router equipment. The ATLAS 550 chassis includes a high-speed multi-protocol backplane and six modular expansion slots: two network interface slots and four user interfaces slots. A wide range of hot-swappable, industry-standard modules are also available to effectively converge your telecommunications and your existing network systems, such as routers, PBX, key systems, video conferencing equipment, remote access servers, LANS, faxes, and telephones. The ATLAS 550 will typically reside at a customer site and perform the functions found in multi-port multiplexers, channel banks, 1/0 cross connect switches, Frame Relay access devices/concentrators/switches, IP routers, and ISDN switches. It also includes an integral voice switchboard and dial plan for dynamically and intelligently switching voice and data calls based on the telephone number dialed. ATLAS 550 supports multiple network technologies including T1/ FT1 DSX-1, ISDN, FXS, FXO, V.35 and 10/100 Base T Ethernet and is designed to be used for more cost-effective T1, ISDN or Frame Relay networks. With the modularity of ATLAS 550, users can now support up to 10 FT1s and run traditional switched or multiplexed voice/data.
(note this is a guest post by Tenox) In previous posts from ASV series I have explained why I got hooked on Atari System V UNIX and what I had to do to get a decent resolution out of Atari TT. Having built the VGA monitor adapter, the next challenge was to replace the internal SCSI hard disk with a flash storage of some sort. I really don’t like spinning hard disks and especial the old ones. I have mentioned that there are two surviving ASV disk images. The better one was made out of a rather large old, loud and obnoxious Maxtor. I’m definitely not having this monstrosity inside of my beloved Atari! Maxtor LXT340 SY So how can you replace an old SCSI hard disk with a modern flash device? There actually are several different ways. If you have the money you can go industrial route, which is a SCSI disk replacement for various machinery and embedded systems produced by Reactive Data. You can buy one of these for a little over 00 USD. The good part is that they substitute a specific real hard disk model and are exceptionally good in quality of emulation. However, spending a lot of money on my TT and Tenox VGA already, this really wasn’t an option without getting a divorce. Another approach is to use SCSI to IDE bridge combined with IDE to CF adapter or possibly SCSI to SATA bridge and SATA SSD disk. These are widely used by Atari / Amiga / Mac 68k community. The most popular bridge come from a company called Acard. I actually had one of these at hand, AEC-7220 U which I used for TOS/ GEM work. acard front Did it work? As you can guess – of course it didn’t! The initial boot loader errors out unable to read disk capacity. Atari SYS V failed to boot Atari ST/ TT, somewhat similarly to 68k Macs require a hard disk driver, present on the hard disk itself. There are several 3rd party implementations, some of them, like HDDRIVER maintained up to present date. Unfortunately these.
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