mishenyka,
sorry about the delay, we were away all weekend.
The CPU boards in this switch are EXS-CPU-1202 boards, assembly number 68-2126-03 rev E16.
Many folks who are using these switches have upgraded the CPUs to third- or fourth-generation boards from Cantata, which came along with dedicated VoIP interface boards and new software to bring an EXS-2000 up to a CSP-2090.
;begin rambling
A brief and incomplete history, if anyone is interested: Lucent payed a small fortune to purchase Excel, at the time [turn of the century], it was the cutting edge of programmable switches and could be mated with existing 4ESS and 5ESS installations to provide all manner of "next-gen" services. Then they decided that they really didn't want to be in the CO switch business any more, and dumped Excel like a hot potato. Excel then merged with a struggling Brooktrout Technologies to form Cantata. Cantata took the existing EXS system [which also had excellent DSP options], and turned it into the CSP, or Converged Services Platform, a pricey TDM/VoIP gateway for small CO's, CLECs, etc.
Cantata hung around for a while until they were purchased by Dialogic. Dialogic kept the line alive for a while, and eventually retired it. I think it was just the cost that made these switches undesirable - NEBS 3 equipment costs real money compared to plastic throwaways.
Jim
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Speaking from a secure undisclosed location.
