AT&T AUDIX Networking 585-300-903 - Manual (Page 232)

B-2 Sales Engineering Notes
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UPGRADES, SOFTWARE, AND VINTAGES
It is a Marketing responsibility to verify that correct software exists in both the Private Branch Exchange
(PBX) and the AUDIX system and that correct vintages of circuit packs exist in the AUDIX system to
accommodate any added features. For example, a Distributed Communications System (DCS) environment
with more than five PBXs in the cluster will require checking if the TN533 SCPI is the correct vintage. Use
the
maintenance : system : vintage form documented in the appropriate AUDIX forms
reference manual to determine required minimum vintages.