The first 2 days in the company of a project encountered a line of the situation, to the end is the problem of the line order
Now it's time to popularize the downline, probably for old analog lines that haven't used IP or digital phones.
In general, the large log lines are 25 pairs of lines, matching the analog extension Board 24 ports, 25 No, the line sequence for
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But sometimes we bump into a 16-port analog extension board, and that's when you're paying attention.
such as the TN2215 16-Port Analog extension board, it uses the line sequence is
1,2,3,4,9,10,11,12,13,14,15,16,21,22,23,24
If you do this at the normal 24-mouth sequence, you'll end up with a problem.
By the way, TN2464 E1/T1 interface
TN2464,E1/T1 Interface Board
RX
+TX
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Avaya Line Order