pre_text: Sales by Category In addition to the above reporting segments, we also report revenue for the following three categories – (1) Access & Aggregation, (2) Subscriber Solutions & Experience and (3) Traditional & Other Products. The following tables disaggregates our revenue by major source for the years ended December 31, 2019, 2018 and 2017: (1) Subscriber Solutions & Experience was formerly reported as Customer Devices. With the increasing focus on enhancing the customer experience for both our business and consumer broadband customers and the addition of SmartRG during the fourth quarter of 2018, Subscriber Solutions & Experience more accurately represents this revenue category.
table: 2019
table: (In thousands) Network Solutions Services & Support Total
table: Access & Aggregation $289,980 $58,894 $348,874
table: Subscriber Solutions & Experience (1) 144,651 8,269 152,920
table: Traditional & Other Products 20,595 7,672 28,267
table: Total $455,226 $74,835 $530,061
question: Analyse this data from a financial earnings document. What is the difference in the total revenue from Access & Aggregation and Traditional & Other Products?