Until the IRS staff returns to work and clears the fax cues the number will continue to ring busy. You can try every couple of days or mail in the forms ... either way expect things to take a long time to process. Some IRS personnel have gone back to work but the IRS says they will be working on the backlog of unfinished work that was left on the table prior to the furlough ... opening new mail and getting new faxes are not on the list to do right now.
