Question about NEC DTU 8-1 Corded Phone
After a recent power outage 4 out of our 5 phones no longer ring. How can I get all 5 phones to ring? As a non-profit we need to be able to fix this ourselves. Please help!
4 -12 for riging? MB for ringing is 4-01 day 4-02 night. Do it for all extensions. number all the way to the left when in program mode is the port number. check out ldtsnj.com
Posted on Jun 14, 2009
You will need to access system program mode to change ringing inmemory block 4-12
Posted on Mar 12, 2009
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Posted on Jan 02, 2017
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