I have a 8x24 connected to MICS via cisco 1750 through trunk ports. The MICS works fine, however, the 8x24 when set to auto-answer it answers but gives no dial tone, this happens both on auto-answer w/ or w/out DISA. When the 8x24 anwsers it is just silence and you cannot dial any extention. I did change the ext. pattern to 3.. rather than 2..