Figure 20: Digital Channels Status - Grandstream Networks UCM6510 How To Configure


Monitor digital channel status under web UI->Status->PBX Status.

Monitor data trunk status under web UI->PBX->Basic/Call Routes->Data Trunk page.
while the other end is not.
BLUE alarm: the port goes into BLUE alarm
when it receives all unframed 1s on all timeslots
from the remote switch. This is a special signal
to indicate that the remote switch is having
problem with its upstream connection.
Cannot start up

Figure 20: Digital Channels Status

Table 2: Digital Channel Status Indicators
Voice Channel
Not available
Connected and in talking status; or incorrect
configuration
Connected and in idle status
Connected and in ringing status
Data Channel
Always shows blue square
D Channel
Always shows grey with channel number in blue.
How to Configure T1 Trunk on UCM6510 Page 16 of 17