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Showing content with the highest reputation on 10/16/2017 in all areas

  1. 1 point
    Hey guys I'm pretty new to phones and scanning and found this weird thing and was wondering if any of you guys happen to know what this thing is: 601-748-4225 enter 5555# - it seems to be some kind of monitor with weird conversations.   Any idea?   --heartbreakr
  2. 0 points
    From what I heard several years ago, the later 4ESS switches that were installed in the mid to late 90s were of a newer generation than those from 1976 to the late 80s. And yes, some of these switches are 40 years old!! But as TP said, over time I bet most of the guts have been replaced (though I do wonder about the announcement machines - some of which are quite broken!). But I think to say relevant, AT&T like a lot of other telcos are going VoIP. I know Verizon basically runs it's old school POTS TDM network and a VoIP network in parallel with gateways to cross connect the two worlds as necessary. Yeah, AT&T has introduced DMS-250, 5ESS, etc. into the long distance network, but the venerable 4ESS is still the backbone. Just curious what their strategy is to play in a mixed TDM and IP environment moving forward.