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Decoder does not work using "Importing from Hex Dump"

I have imported TN3270 packet from tk4. I selected TELNET decoder but wireshark cannot recognizes it as TN3270. Only data field appears.

000000 f5 42 11 40 40 1d 60 c8 85 99 83 a4 93 85 a2 40
000010 e5 85 99 a2 89 96 95 40 40 7a 11 40 d4 1d e8 f4
000020 4b f0 f0 11 c1 50 1d 60 c8 96 a2 a3 40 95 81 94
000030 85 40 40 40 40 40 40 40 40 40 7a 11 c1 e4 1d e8
000040 c4 c5 e2 d2 e3 d6 d7 60 f9 c6 d5 f0 f1 c2 e2 11
000050 c2 60 1d 60 c8 96 a2 a3 40 d6 e2 40 40 40 40 40
000060 40 40 40 40 40 40 7a 11 c2 f4 1d e8 e6 89 95 84
000070 96 a6 a2 60 f6 4b f2 4b f9 f2 f0 f0 40 40 d7 99
000080 96 86 85 a2 a2 89 96 95 81 93 40 f6 f4 60 82 89
000090 a3 11 c3 f0 1d 60 c8 96 a2 a3 40 c1 99 83 88 89
0000a0 a3 85 83 a3 a4 99 85 40 7a 11 c4 c4 1d e8 c9 95
0000b0 a3 85 93 4d d9 5d 40 a7 f6 f4 11 c5 40 1d 60 d7
0000c0 99 96 83 85 a2 a2 96 99 a2 40 40 40 40 40 40 40
0000d0 40 7a 11 c5 d4 1d e8 d3 d7 7e f8 6b 40 c3 96 99
0000e0 85 a2 7e f4 6b 40 c3 d7 e4 a2 7e f1 11 c6 50 1d
0000f0 60 d3 d7 c1 d9 40 d5 81 94 85 40 40 40 40 40 40
000100 40 40 40 7a 11 c6 e4 1d e8 c8 c5 d9 c3 e4 d3 c5
000110 e2 11 c7 60 1d 60 c4 85 a5 89 83 85 40 95 a4 94
000120 82 85 99 40 40 40 40 40 7a 11 c7 f4 1d e8 f0 7a
000130 f0 f0 c3 f1 11 c8 f0 1d 60 e2 a4 82 83 88 81 95
000140 95 85 93 40 40 40 40 40 40 40 40 7a 11 c9 c4 1d
000150 e8 f0 f0 f0 c3 11 c8 f0 1d 60 40 40 40 40 40 40
000160 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40
000170 40 40 40 40 40 5c 5c 5c 5c 5c 5c 5c 5c 5c 5c 5c
000180 5c 40 40 40 5c 5c 5c 5c 40 40 5c 5c 5c 5c 5c 40
000190 40 40 40 40 40 40 40 40 40 6a 6a 11 4a 40 1d 60
0001a0 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40
0001b0 40 40 40 40 40 40 40 40 40 40 40 5c 5c 40 40 40
0001c0 5c 5c 40 40 40 5c 5c 40 40 40 40 5c 5c 40 40 40
0001d0 40 5c 5c 40 40 40 40 40 40 40 40 40 40 40 6a 6a
0001e0 6a 11 4b 50 1d 60 40 40 40 40 40 40 40 40 40 40
0001f0 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40
000200 40 5c 5c 40 40 40 5c 5c 40 40 40 5c 5c 40 40 40
000210 40 5c 5c 40 40 40 5c 5c 40 40 40 40 40 40 40 40
000220 40 40 40 6a 6a 6a 6a 11 4c 60 1d 60 40 40 40 40
000230 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40
000240 40 40 40 40 40 40 40 40 40 40 40 40 5c 5c 40 40
000250 40 40 40 40 40 40 40 5c 5c 40 40 5c 5c 40 40 40
000260 40 40 40 40 40 40 40 40 6a 6a 40 6a 6a 11 4d f0
000270 1d 60 40 40 40 40 40 40 40 40 6a 93 40 40 40 40
000280 40 40 6d 6b 6b 6b 60 60 60 6b 6b 6d 40 40 40 40
000290 40 40 5c 5c 40 40 40 40 40 40 40 40 40 5c 5c 40
0002a0 5c 5c 40 40 40 40 40 40 40 40 40 40 40 6a 6a 40
0002b0 40 6a 6a 11 4f 40 1d 60 40 e9 e9 e9 a9 a9 40 61
0002c0 6b 7d 4b 60 7d 79 7d 40 40 40 40 60 4b 40 40 5e
0002d0 60 5e 5e 6b 40 40 40 40 5c 5c 40 40 40 40 40 40
0002e0 40 40 40 5c 5c 5c 5c 40 40 40 40 40 40 40 40 40
0002f0 40 40 6a 6a 40 40 40 6a 6a 11 50 50 1d 60 40 40
000300 40 40 40 40 6a 6b f4 60 40 40 5d 40 5d 60 6b 6d
000310 4b 40 6b 4d 40 4d 40 40 7d 7d 60 7d 40 40 5c 5c
000320 40 40 40 40 40 40 40 40 40 5c 5c 5c 5c 5c 40 40
000330 40 40 40 40 40 40 40 6a 6a 40 40 40 40 6a 6a 11
000340 d1 60 1d 60 40 40 40 40 40 7d 60 60 60 7d 7d 4d
000350 6d 61 60 60 7d 40 40 79 60 7d 5d 6d 5d 40 40 40
000360 40 40 40 40 5c 5c 40 40 40 40 40 40 40 40 40 5c
000370 5c 40 40 5c 5c 40 40 40 40 40 40 40 6a 6a 40 40
000380 40 40 40 6a 6a 40 40 40 40 6a 6a 6a 6a 6a 6a 6a
000390 6a 6a 6a 11 d2 f0 1d 60 40 40 40 40 40 40 40 40
0003a0 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40
0003b0 40 40 40 40 40 40 40 40 5c 5c 40 40 40 40 40 40
0003c0 40 40 40 5c 5c 40 40 40 5c 5c 40 40 40 40 40 40
0003d0 6a 6a 6a 6a 6a 6a 6a 6a 6a 6a 6a 40 40 e4 97 84
0003e0 81 a3 85 40 f0 f8 11 d4 40 1d 60 40 40 40 40 40
0003f0 40 40 e3 88 85 40 d4 e5 e2 40 f3 4b f8 91 40 40
000400 40 40 40 40 40 40 40 40 40 40 40 5c 5c 40 40 40
000410 40 40 40 40 40 40 5c 5c 40 40 40 40 5c 5c 40 40
000420 40 40 40 40 40 40 40 40 40 40 6a 6a 11 d5 50 1d
000430 60 40 40 40 40 40 e3 a4 99 4d 95 5d 92 85 a8 40
000440 e2 a8 a2 a3 85 94 40 40 40 40 40 40 40 40 40 40
000450 40 5c 5c 40 40 40 40 40 40 40 40 40 5c 5c 40 40
000460 40 40 40 5c 5c 40 40 40 40 40 40 40 40 40 40 40
000470 6a 6a 11 d6 60 1d 60 40 40 40 40 40 40 40 40 40
000480 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40
000490 40 40 40 40 40 5c 5c 5c 5c 5c 5c 40 40 40 40 40
0004a0 40 5c 5c 5c 5c 40 40 40 40 40 5c 5c 5c 40 40 40
0004b0 40 40 40 40 6a 6a 6a 6a 6a 6a 11 d7 f0 1d 60 11
0004c0 d9 40 1d 60 40 40 40 40 40 40 40 40 40 40 40 40
0004d0 e3 d2 f3 40 83 99 85 81 a3 85 84 40 82 a8 40 e5
0004e0 96 93 92 85 99 40 c2 81 95 84 92 85 40 40 40 40
0004f0 40 40 40 a5 82 81 95 84 92 85 7c 82 a2 97 60 87
000500 94 82 88 4b 83 96 94 11 5a 50 1d 60 40 40 40 40
000510 40 40 40 40 40 40 40 40 e3 d2 f4 60 40 a4 97 84
000520 81 a3 85 40 82 a8 40 d1 a4 85 99 87 85 95 40 e6
000530 89 95 92 85 93 94 81 95 95 40 40 a6 89 95 92 85
000540 93 94 81 95 95 7c 89 84 4b 85 a3 88 a9 4b 83 88
000550 11 5b 60 1d 60 40 40 40 40 40 40 40 40 40 40 40
000560 40 40 40 40 40 40 40 40 40 40 a2 85 85 40 e3 d2
000570 f4 60 4b c3 d9 c5 c4 c9 e3 e2 40 86 96 99 40 83
000580 96 94 97 93 85 a3 85 40 83 99 85 84 89 a3 a2 ff
000590 ef
000591