I have a Nortel, Ameritech, Meridian M7324 Model telephone that has 24 keys with 4 outside lines and two of the 4 are stuck with the message "Line In Use". Yesterday I tried to "Link", "Transfer" a call and two of the telephone lines are stuck. I cannot get a dial tone on either line. I left the telephone unplugged overnight thinking that would dislodge or cancel the link/transfer but it did not work.
Please help me.
Please help me.