On 8/8/19 2:21 PM, Dave McGuire via vcf-midatlantic wrote:
On 8/8/19 10:42 AM, Neil Cherry via vcf-midatlantic wrote:
Yup, lots of DS0 (and sub divided DS0s) and T1s. Not so many T3s as those we too expensive.
Long before those were common for this type of use, there was a big crop of leased-line subrate modems that bore the Dataphone moniker, from 9600 baud down to 1200, and possibly below that. These were for four-wire leased lines.
Yes switched56 service and T1 DSUs. I used to use Paradyne 740 muxes to break those out. I can't recall what the previous company name of the 740 was. I also recall the Baby Bells delivering a special current loop line for AP News service (I think it was dry). Those were fun, 28.8 baud. :-) I don't recall anything like a DSU involved but that may not have been hear the equipment I was working with (5 bit code as I recall but it was newpaper code not Baudot). Now I work with 100GE and I hear they're working on 400GE. Progress marches on ... -- Linux Home Automation Neil Cherry ncherry@linuxha.com http://www.linuxha.com/ Main site http://linuxha.blogspot.com/ My HA Blog Author of: Linux Smart Homes For Dummies