We have an 509 rev7 with an 308 on a 2 slot carrier all phone 18D seriesII.
When we dial an phone number the display only will blank out for a second after I dial four or five number. It like if it hic cup then I would have dial it again before it work. It does it like maybe every 2-3 call we make. It does on all telephone and CO line only on ext 18-26 . It Doesn't happen on ext 10-17 work fine. Any Idea what causing the problem....TIA
When we dial an phone number the display only will blank out for a second after I dial four or five number. It like if it hic cup then I would have dial it again before it work. It does it like maybe every 2-3 call we make. It does on all telephone and CO line only on ext 18-26 . It Doesn't happen on ext 10-17 work fine. Any Idea what causing the problem....TIA