Jayesh Satghare: The dac value is how you are able to adjust your 13Mhz clock on your BOIA card on an Ultra site or a BCFA on a TalkFamily. Inorder to get this set correctly you must use a freq counter. This dac value will be different on everysite so don’t try and set all BTS’s to the same dac value. Once you have your freq counter dialed into exactly 13Mhz make sure you click on set as current and then save current permanently. This value will however drift a little to reallign itself with the frequency on your T-1. If it is drifting dramatiaclly check your bits clock in your BSC.