human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: DSL Type, Provider, Resale, Down (up to kbit/s), Up (up to kbit/s)
###Question: What is download bandwith where the provider is deutsche telekom ag?
gpt
SELECT MAX Down (up to kbit/s) FROM table WHERE Provider = Deutsche Telekom AG