I have NS700 ver 9
KX-DT680 phones
On the DT680, I have buttons for each of my CO trunks
for sake of simplicity, they are CO1 to CO4
If I pick up handset, it select a trunk that available and I dial my number, work fine...
But if I want to dial from a specific trunk, ie: CO4, I press CO4, and...
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