$ fq -d asn1_ber dv tc38.ber
     |00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|.{}: tc38.ber (asn1_ber) 0x0-0xf.7 (16)
0x000|23                                             |#               |  class: "universal" (0) 0x0-0x0.1 (0.2)
0x000|23                                             |#               |  form: "constructed" (1) 0x0.2-0x0.2 (0.1)
0x000|23                                             |#               |  tag: "bit_string" (0x3) 0x0.3-0x0.7 (0.5)
0x000|   80                                          | .              |  length: "indefinite" (0) 0x1-0x1.7 (1)
     |                                               |                |  constructed[0:2]: 0x2-0xd.7 (12)
     |                                               |                |    [0]{}: object 0x2-0x6.7 (5)
0x000|      03                                       |  .             |      class: "universal" (0) 0x2-0x2.1 (0.2)
0x000|      03                                       |  .             |      form: "primitive" (0) 0x2.2-0x2.2 (0.1)
0x000|      03                                       |  .             |      tag: "bit_string" (0x3) 0x2.3-0x2.7 (0.5)
0x000|         03                                    |   .            |      length: 3 0x3-0x3.7 (1)
0x000|            00                                 |    .           |      unused_bits_count: 0 0x4-0x4.7 (1)
0x000|               0a 3b                           |     .;         |      value: raw bits 0x5-0x6.7 (2)
     |                                               |                |    [1]{}: object 0x7-0xd.7 (7)
0x000|                     03                        |       .        |      class: "universal" (0) 0x7-0x7.1 (0.2)
0x000|                     03                        |       .        |      form: "primitive" (0) 0x7.2-0x7.2 (0.1)
0x000|                     03                        |       .        |      tag: "bit_string" (0x3) 0x7.3-0x7.7 (0.5)
0x000|                        05                     |        .       |      length: 5 0x8-0x8.7 (1)
0x000|                           04                  |         .      |      unused_bits_count: 4 0x9-0x9.7 (1)
0x000|                              5f 29 1c d0      |          _)..  |      value: raw bits 0xa-0xd.3 (3.4)
0x000|                                       d0      |             .  |      unused_bits: raw bits 0xd.4-0xd.7 (0.4)
0x000|                                          00 00|              ..|  end_marker: 0 0xe-0xf.7 (2)
     |00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|
  0x0|0a 3b 5f 29 1c d0|                             |.;_)..|         |  value: raw bits 0x0-0x5.3 (5.4)