I installed Dell Classic Phone Tools software. It found the modem etc. Installed successfully..but when I try to send a fax, it won’t go through? It’s not getting a dial tone per message. But I know the number is correct as I called it from my phone. What am I missing?

I have BVRP Classic Phone Tools, for years now I have been able to fax from my PC with no problem. Recently it has began acting strange… I used to scan multiple pages thru my all-in-one & choose the option "Fax using PC Modem" & when I was done scaning all the pages desired it would automatically roll over to my fax software, but it stopped doing that & I had to go in an scan all my documents to a folder then fax each on individually as an attachment rather than all together as on fax. I was going to do that this evening (fax 1 cover sheet, then 7 pages one-by-one) but when I went to fax the cover sheet & 1st page of all the faxes I got an error message "COMMUNICATIONS PORT UNAVAILABLE" Now I know this is refering to the modem in my computer, but everything is hooked up the exact way it has always been & when I troubleshoot everything says "device working properly" What could be wrong? When I try to query the modem it says there is a program using it & to close it before continuing,
but I don’t know what program could be tieing up the modem since the only on that uses it is my fax software & that will not even establish a connection. How can I find out what program is using the modem… Could it be blocking the fax machine from useing the modem & faxing? HELP PLEASE!!!
I figured it out. It was a cell phone cable I had plugged in the USB interupting the communication.
Still need help with he scanned pages not automatically rolling over to fax software.