I have a customer with a Merlin Legend R7. The problem is dialing 1 particular fax number. I can dial the number from an MLX set but when I dial it from an analog set I get a message saying my call cannot go through. CBeyond is saying that I am sending out 3.1K on the analogs and "voice" on the digital sets. They are saying the other carrier for the fax machine is rejecting the 3.1K. Any ideas on how to get the analog to send out something other than 3.1K?