Help!! Until my new Partner system arrives, I have no working phones...so I dug out an old Bell 620 panel and power supply to use in the mean time....I'm jsut having some trouble with the wiring. If you'll recall, there are 2 small 66 blocks, each divided into four quadrants (1 for each KTU)....in each quadrant, the rows are T R T R A A1 L LG RG RC. It makes sense...except for the fact that there are 2 sets of T/R rows...why is this? Is hte first row for the incoming line and the second for the connection to my keyset?