Table:
text: GSM frequency bands
Frequency bands
GSM frequency bands
System_ Band Uplink_MHz Downlink_MHz Channel_number
T-GSM-380 380 380.2–389.8 390.2–399.8 dynamic
T-GSM-410 410 410.2–419.8 420.2–429.8 dynamic
GSM-450 450 450.6–457.6 460.6–467.6 259–293
GSM-480 480 479.0–486.0 489.0–496.0 306–340
GSM-710 710 698.2–716.2 728.2–746.2 dynamic
GSM-750 750 747.2–762.2 777.2–792.2 438–511
T-GSM-810 810 806.2–821.2 851.2–866.2 dynamic
GSM-850 850 824.2–849.2 869.2–894.2 128–251
P-GSM-900 900 890.0–915.0 935.0–960.0 1–124
E-GSM-900 900 880.0–915.0 925.0–960.0 975–1023, 0-124
R-GSM-900 900 876.0–915.0 921.0–960.0 955–1023, 0-124
T-GSM-900 900 870.4–876.0 915.4–921.0 dynamic^
DCS-1800 1800 1,710.2–1,784.8 1,805.2–1,879.8 512–885
PCS-1900 1900 1,850.2–1,909.8 1,930.2–1,989.8 512–810

Question: Which band is the highest for GSM frequency bands and has a system of GSM-450?