How many different ways can we cause trouble in the 5XB?

Note: we are all out of cards and mailing supplies, so we can’t fill any more orders. Thanks to those who donated! Now I have a lot of work to do ;) Many viewers suggested different ways to drop trouble cards, so we tried some of them! 00:27 - Hookswitch flashing "11" 02:32 - Hookswitch flashing inconsistently 06:16 - Holding MRL down in the originating register 11:48 - High impedance at 20hz on a subscriber line 16:16 - Dialing ABCD or the AUTOVON priority digits 16:39 - Dialing a code for which there is no translation/route 21:19 - Messed up MF tones