snaking thru brick

[EDIT: Wiring diagram to connect PAP2 to RC2a and E20B doorphone can be found HERE this diagram is the same exact method as to how to wire the door phone shown in the images on this page as well]

This is part of one of the larger jobs already posted on this site.

The customer wanted the door bell installed on the front of the brick, I tried to talk them into putting the door bell in the doorway which would have made the job easier, but they insisted in a specific location for the door phone. Unfortunately the location where they wanted the door phone installed was directly on the other side of a support column of which I did not have a long enough bit to get thru (and potentially there was steel behind the masonry)

The customer suggested that I channel out the concrete between the bricks to run the wires, but I felt that would have left the job sloppy, and would have actually been more work than to come up with this solution.  About 2 feet to the right of where the door phone was to be installed the wall was thin enough do drill thru the masonry, So I had to channel thru the concrete to get the wire to where it needed to be.

Drilled hole across brick towards where wire exits for channel. 

3x Cat 5 wires (for 3 door phones) run thru channel behind brick.

Hole on right is where wire enters building, to left is where wire exist thru channel behind brick.

Another angle of the channel for door phone wiring. 

I do not have an image of the door phone installed. If I pass by this location again, I will take an image of the installed door phone and add it to this post.

EDIT Here it is, finally. The door bell mounted by the front door.