Are there any tricks to getting Robbed Bit Channel Associated Signaling (CAS) working properly with FS (legacy 1.06 nor latest git seem to show desired results) and Sangoma boards.  I am using model A102, REV 1.1.  DTMF does not seem to be recognized in the call stream so IVR does not respond.  SIP calls work fine.

Brian C. Edgar, Jr.