[asterisk-users] check channels

[Felipe Figueiredo]

Hi guys,
is there a way to see how many channels of an specific tecnology are being
used?
Like, i have a zap card, e1 (30 channels), and there are 10 channels being
used at this moment. When the E1 reaches 15 busy channels I need to receive
a call or something like this, telling me that 15 of 30 channels are busy.
How can I do this?

Thanks!
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