Our office use telephone NEC DTU-16D-1A. There are 6 users and since 2 days one of the user's line keeps blinking. We disconnect the telephone but still the same. Can someone help?

SOURCE: Will Not go to voice mail

Jennifer209, if you press FEATURE + the button VM is pre-programmed on what does it display? It should show the extension number pilot to VM. If you call it directly, what happens? If you get no answer calling it directly, your VM may be down.

Kaait, is it getting into the VM that's the problem, or doing things inside the mailbox that is the problem?

SOURCE: dtu 16d

did you get the email?

SOURCE: NEC DTU-8D-1A TELEPHONE

Press Feature 1 That will turn the mic off, or on.

SOURCE: nec eletra elite dtu 16d-2 telephone

Feature button
Then "26"

SOURCE: Programming speed dial numbers into NEC DTU-32D-1A phone

hit feature key,hit a line key,dial 9 plus the number,hit feature