I am on site. The DXD function went to a loud clicking (user failed to tell me this).

Replaced processor. Am unable to raise CO dial tone with a "9". During testing, powered down system and when powered up had lost it's memory. Apparently the "new" procesor has a faulty memory support battery! This from a usually reputable supplier.

Any ideas of why "9" gives a busy tone? Two COL. Auto line selection is set to intercom and does give intyercom dial tone. Line three input a "Ring the system when the front door is opened" system from long ago. "Lines installed" program is set to 2. Access and restrictions have been checked. System is not set in hybrid mode.

Thanks for any help.

JE

Thanks for your help,

JE