Instruction manual

CVX Switch Backward Compatibility
296-1011-220 Rel. 4.1, Doc. Rev. 07.02 1-3
Upgrading to Release 4.1
CVX Switch Backward Compatibility
All CVX system software for the system control card (SCC), digital access card
(DAC), and modem access card (MAC) is backward compatible with existing
CVX switch hardware. Each respective firmware image automatically detects the
hardware and its revision, and enables only the functionality supported by the
installed hardware.
SCC-II Warning
Warning:
DO NOT USE any CVX switch software release prior to 3.6 or damage to
the SCC-II will result. DO NOT COPY pre-3.6 versions of CVX switch
software to any flash card installed in an SCC-II. If a CVX switch boot is
attempted, the CVX switch will become nonfunctional until the corrupt
SCC-II is removed and forwarded to Nortel Networks for reprogramming
and returned to the customer site. The 3.6 software supplied with the
SCC-II is required for normal operation.