Have don't this numerous times and for some reason on this Mitel 200 LW 19 with loop start trunks and analog trunks with ATT when they transfer me to their reservation 800 number it won't recognize my DTMF digits. If the property calls the this number directly it works fine so only with 2 trunks talking together is when it won't work. ATT is sayting it is nothing on their end and that answer and disconnect supervision is turned on. Not sure what else to do at this point. Anyone run into this or have any advice? I have compaired programming with another site that it works fine but this site isn't ATT.