Document Format Files
| Seq | Description | Document | Type | Size |
|---|---|---|---|---|
| 1 | 20-F | d873656d20f.htm | 20-F | 353097 |
| 2 | EX-4.4 | d873656dex44.htm | EX-4.4 | 49703 |
| 3 | EX-4.5 | d873656dex45.htm | EX-4.5 | 51677 |
| 4 | EX-4.6 | d873656dex46.htm | EX-4.6 | 51176 |
| 5 | EX-4.7 | d873656dex47.htm | EX-4.7 | 49666 |
| 6 | EX-4.8 | d873656dex48.htm | EX-4.8 | 49832 |
| 7 | EX-4.9 | d873656dex49.htm | EX-4.9 | 50275 |
| 8 | EX-4.10 | d873656dex410.htm | EX-4.10 | 50609 |
| 9 | EX-4.11 | d873656dex411.htm | EX-4.11 | 48828 |
| 10 | EX-4.12 | d873656dex412.htm | EX-4.12 | 47478 |
| 11 | EX-4.13 | d873656dex413.htm | EX-4.13 | 54711 |
| 12 | EX-4.14 | d873656dex414.htm | EX-4.14 | 202597 |
| 13 | EX-4.15 | d873656dex415.htm | EX-4.15 | 218287 |
| 14 | EX-12.1 | d873656dex121.htm | EX-12.1 | 10541 |
| 15 | EX-12.2 | d873656dex122.htm | EX-12.2 | 10661 |
| 16 | EX-13.1 | d873656dex131.htm | EX-13.1 | 6463 |
| 17 | EX-15.1 | d873656dex151.htm | EX-15.1 | 7122 |
| 18 | EX-15.2 | d873656dex152.htm | EX-15.2 | 6597568 |
| 19 | EX-15.3 | d873656dex153.htm | EX-15.3 | 1332 |
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| 232 | GRAPHIC | g873656rachelcanhamsig.jpg | GRAPHIC | 3708 |
| Complete submission text file | 0001193125-20-147926.txt | 52392794 |
Data Files
| Seq | Description | Document | Type | Size |
|---|---|---|---|---|
| 20 | XBRL INSTANCE DOCUMENT | bt-20200331.xml | EX-101.INS | 11250242 |
| 21 | XBRL TAXONOMY EXTENSION SCHEMA | bt-20200331.xsd | EX-101.SCH | 274285 |
| 22 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE | bt-20200331_cal.xml | EX-101.CAL | 300131 |
| 23 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE | bt-20200331_def.xml | EX-101.DEF | 1203179 |
| 24 | XBRL TAXONOMY EXTENSION LABEL LINKBASE | bt-20200331_lab.xml | EX-101.LAB | 2334102 |
| 25 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE | bt-20200331_pre.xml | EX-101.PRE | 1582005 |
IRS No.: 133235162 | Fiscal Year End: 0331
Type: 20-F | Act: 34 | File No.: 001-08819 | Film No.: 20899963
SIC: 4813 Telephone Communications (No Radiotelephone)
