Question on a feature in the Monitor Program

[mikedphones]

I have a larger Magix R4 site and am trying to determine who has line 850 on their phone. Using SMDR ON I can call it, and see the abandoned call, but no extension number related. I recall that in Monitor you can pull up the trunk and then see where it's assigned across the board. I haven't done it in years, my recollection may be off, but can someone give me a refresher? Thanks