It is good practice to check on the health and capactiy of your phone system. Ideally you should regularly check to see how many of your T1 channels are in use. On a typical T1 PRI, you have 23 voice channels available for calls. To view the number of channels in use….
status trunk 1
(Substitute the above trunk-group number as appropriate.)
An example would look like:
TRUNK GROUP STATUS
Member Port Service State Mtce Connected Ports
Busy
0001/001 002V301 in-service/idle no
0001/002 002V302 in-service/idle no
0001/003 002V303 in-service/idle no
0001/004 002V304 in-service/idle no
0001/005 002V305 in-service/idle no
0001/006 002V306 in-service/idle no
0001/007 002V307 in-service/idle no
0001/008 002V308 in-service/idle no
0001/009 002V309 in-service/idle no
0001/010 002V310 in-service/idle no
0001/011 002V311 in-service/idle no
0001/012 002V312 in-service/idle no
0001/013 002V313 in-service/idle no
0001/014 002V314 in-service/idle no
The “Service State” of “in-service/idle” means that the line is working, but not in use. Overall the messages should be self-explanatory.