Release 5.0
The primary enhancements in Release 5.0 include:

● PARTNER® Endeavor 362EC Module can now be
  used in Release 5.0. The module will still function
  in the same manner, thus providing 3 analog CO
  lines, 6 ETR only station ports, and 2 full function
  ETR station ports with full tip/ring functionality.
● New 012E module that provides additional station
  capacity. The addition of this new module in the
  product line allows PARTNER ACS to now support 48
  ETR stations.
● Remote administration functionality enhancements
 

Release 4.0
The primary enhancements in Release 4.0 include:

● Connection to local area networks (LANs)/wide
  area networks (WANs)
● Corporate backbone, or multi-tenant hub, for
  sharing of data and voice over twisted-pair copper
  phone lines
● Business-ready symmetric digital subscriber line
  (SDSL) with "always-on" Internet connectivity and
  file uploads/downloads at up to 2 Mbps
● Voice over DSL (VoDSL) with the capacity of 16
  simultaneous phone conversations
● Standard Caller ID providing both caller's name
  and number

Release 3.0
The primary enhancements in Release 3.0 include:

● Remote Access PC card
● Unique line ringing
● Fax tone detection
● Call screening
● Direct extension dialing (DXD) transfer to
  calling group
● Enhanced programming procedures
● Record-a-call
● Remote administration and diagnostics
● Automatic Daylight Savings/Standard times
● Improved emergency numbers/forced account
  code information 

Release 2.0
The primary enhancements in Release 2.0 include:

Release 1.0
This was the first release of the PARTNER® Advanced Communications System.

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