I looked at the Installation Manual for the product line. The total footage for Line #1 must be less than 600' and every phone needs to have the same line designated as #1.

Looking at the manual has me wondering if the jack is, somehow, mis-wired. But, after hours, if needed, try unplugging all of the other extensions and see if the suspect one can dial out. If so, add one extension at a time and re-test.


I Love FEATURE 00