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Nokia no longer provides support for this Product, it has been discontinued. Refer to the Nokia Maintenance Services End of Life Guideline
for additional information.
The Nokia 1AESS - 1A Electronic Switching System with Attached Processor (3B20 Duplex Computer). The AT&T/Lucent 1AESS local
Alerts and Notifications
In various systems, this product is listed as "1AESS". This product is in a Discontinued Availability state in the Nokia portfolio.