You may be able to do a manual receive and see if that works. With a
telephone connected to your modem call the mailbox. When the mailbox
begins to transmit the "whistle" go into the receive menu and select
receive Fax Now.
Here is the information on the fax mailbox service that we support:
Fax Mailbox/Broadcast - Technical Support (416)443-4390
Fax Mailbox/Broadcast - General Inquiries (800)670-8777
Fax Mailbox/Broadcast - Sign Up and Billing (800)792-0329