Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Will the fax modem allow phone calls when connected for fax?
Document: Worked as expected. My Hewlett-Packard Compaq PC running Windows 7 installed this modem with no issues. I have owned it for 6 months now, the best part about this product, it faxes and it also helps me monitor those annoying Robo calls. As mean as it may sound, I now have my fax machine returning calls repeatedly to those annoying numbers.
This works flawlessly. Attached to computer and phone jack, Win 7 installed drivers and way I went. Configuring Windows Fax was the most difficult part of this. Works great
This device came with an installation CD, but I did not need it. I connected it directly to my Windows 7 PC and it was detected and configured. I just set up the fax software and voila, I was sending faxes. Out of the box and complete set up only 10 minutes.
When I got a new laptop, it didn't come with a phone modem jack. Thankfully, someone thought to make this little wonder. Plug and play with Windows 7 and easy to toss in a bag if you travel.
Bought this and it was working just fine, then had problems with phone line (NOT the product's fault). I was told by AT&T that it must be my modem (it wasn't). ATT&T technician came out and found that their office/call center should have had the problem fixed on their end and that he shouldn't have had to come out.
For some reason one day I got knock off while online... Now I can only connect at 19kbps.I call phone company, ISP,  no problems. I thought maybe the modem quit working..So I order Two of these. An extra one so I would have a backup...This item did not work for me.
I bought this modem to simply enable  my PC to dial phone numbers for me at work. Works like a charm. I did, however, have a problem installing it. As advertised, it uses a standard Windows driver. What I found was that my PC seemed to treat USB ports differently. On one port it couldn't recognize the device and download a driver, on another, it could. Definitely chalking that up to the PC rather than the Modem.
This modem is JUST FINE. Also, self-installed on Windows 7 laptop without having to load the CD. I had arranged to return it, but will keep it now as a backup (yes I bought a new, different modem, thinking that that was the problem, but that one didn't work either because of the phone line problem). I appreciate the vendor's willingness to let me return it. Obviously standing by their product. Went through 3 weeks of grief getting AT&T to step up.
I finally found &#34;instructions&#34; on the disk but they were totally obsolete and appeared to apply to Windows XP. I then connected the modem on a Windows 7 (64) computer, and while it recognized the modem and TRIED to load a driver from the disk, every attempt came bag with a hash-tag mismatch. Since the manufacturer is not identified ANYWHERE on the package I could not contact anyone to get a correct driver.
OK, so far I'm able to send a fax, but have not yet sucessfully configured my system to receive faxes. Am conviced that the Fax Data Modem operates OK.
Answer: yes but it will interrupt the fax transmission. I'm not sure how you are using the modem. It connects to the computer and then the wall. The fax and/or phone are connected via a splitter from the wall jack. But regardless it will disconnect when a  fax or a call comes in.