Product lookup  

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 Read More...

Technical Documentation

Alerts and Notifications

Product Downloads

Troubleshooting Information


In various systems, this product is listed as "1AESS". This product is in a Discontinued Availability state in the Nokia portfolio.

Emergency support

Priority/outages


Related sites