Hehehe I used to design these things. If you want a quick solution that you have to pay for, give SCO/Caldera/Blue Sky a ring at North Sydney. They probably have something off the shelf.
If you want to do it yourself, you can use Stallion cards in a PC (use Google to find them), but you may have to do your own device driver. Another commercial one is Marconi; give them a ring and ask them about the stuff they got when they bought Scitec years ago. I'm sure there were some stand alone serial multiplexers in that lot. The DDS service used to be very cheap, much cheaper than the present dial up service. That's why your customer probably used it. The last time I worked on this sort of thing was at DEC for a customer who was using Telecom's DDS service (synchronous, X22 ==20 ports of X21), converted with racks of DSP cards with on board VAXen to HDLC packets for an IBM mainframe. OOoer. My job was the DSP multiplexer side hardware & software. It took us a couple of years... Cheers, Jill. -- Jill Rowling, System Administrator Eng. Systems Dept, Aristocrat Technologies Australia Level 2, 55 Mentmore Ave Rosebery NSW 2018 Phone: (02) 9697-4484 Fax: (02) 9663-1412 Email: [EMAIL PROTECTED] -----Original Message----- From: Richard Luckhurst [mailto:[EMAIL PROTECTED]] Sent: Tuesday, 15 October 2002 9:11 To: Slug Subject: [SLUG] Serial Multiplexing Hi List I have been asked to look into an interesting project for a client of mine. I have to use a Linux box at both sites the client operates. I have to have 6 serial ports available at the remote site. At the main site I have to recover the 6 serial ports so they can be plugged into a proprietary terminal server along with another 30 serial devices. I am intending to get the 2 Linux boxes connected with a simple dial up PPP link. I have found a number of suitable 8 port serial cards that will take care of the extra ports. Has anyone ever had any experience in multiplexing and then demultiplexing serial ports in this way? The main requirement is the devices at the remote end should see the terminal server at the main end as if there were no link. The serial devices only operate at 9600 and there is not a great deal of data involved. This system is replacing a very expensive and ancient multiplexer system that used a Telstra microlink for comms. With the end of microlinks and the crazy cost of Onramp, along with the ancient hardware being used, the client wants to update. Any thoughts or suggestions would be much appreciated. Regards Richard ____________________________________________________ Richard Luckhurst Manager / Engineer Sound Advice P.O. Box 104 Narrabri NSW 2390 Australia Ph / Fax +61 2 6792 6060 -- SLUG - Sydney Linux User's Group - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug ---------------------- CONFIDENTIALITY NOTICE ---------------------- This email is intended only to be read or used by the addressee. The information contained in this e-mail message may be confidential information. If you are not the intended recipient, any use, interference with, distribution, disclosure or copying of this material is unauthorised and prohibited. Confidentiality attached to this communication is not waived or lost by reason of the mistaken delivery to you. If you have received this message in error, please delete it and notify us by return e-mail or telephone Aristocrat Technologies Australia Pty Limited on +61 2 9413 6300. -- SLUG - Sydney Linux User's Group - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
