Beehive terminals

I have a telephone of probably about that era; it's the same form-factor as a traditional rotary phone, but it has a 12-key keypad instead of a rotary dial. I took it apart, and the dial module has wire colours and component counts which fairly closely fit the "DIAL" portion of your schematic, allowing me to supply some relevant but otherwise missing information. I assume that the Xes (eg, at the "k u" and "w x" points) are NO switches and the single-line-cross (eg, "z y" and "e v") are NC switches - except that my phone has one NC switch too many and one NO switch too few to match the schematic. (One NO and one NC switch share a contact, making them effectively an SPDT switch; I can't tell whether it's break-before-make or make-before-break. Also, one of the other NC switches breaks well after the other NC switches.) Unfortunately it is assembled in such a way that I can't easily get to the etch side of the PCB without being destructive (the connections assembled to the button panel, and while it might be possible to work around this, I would need a thin (ca. 1mm thick) wrench or pair of pliers, to get to nuts that are between two layers). While I might be able to be destructive in a way that could be repaired, I don't think curiosity is worth risking breaking the one really good DTMF phone I have, so I can't trace my circuit to tell how well it matches your schematic. Also important, but not shown on your schematic, is that many of the inductors are wound on the same axis and thus are magnetically coupled together. There are two axes on which the inductors are wound; I conjecture that one is for vertical and one horizontal - ie, one high-tone and one low-tone - but where the inductors shown near the transistor fit into this I can only speculate about. I conjecture that one of each of the two inductors shown as being wired in series in each of the pairs near the transistor is wound on each axis, because I don't see any other reason for using two inductors in series like that. The devices which I'm matching up with the black diamonds with small white lines are small black plastic cylinders with rounded ends, in-line axial leads, maybe 4mm in diameter and 9mm long. There is a colour band, which is yellow on three of them and green on the other. Seeing one in isolation, I would take them for diodes or capacitors, but only tentatively. The three capacitors are one cermaic disc labeled .0051 and two yellow plastic cylinders, each labeled ".0442?F" and "?5%"; I conjecture the two are the ones in the keypad circuit and the one is the one near the transistor. This conjecture is reinforced by their physical placement, which has the cermaic disc next to the transistor and the yellow cylinders on the other side of the board. I find only two objects I recognize immediately as resistors; they are banded 5K1 10% (green-brown-red-silver) and 810 10% (grey-red-brown-silver). The object I am assuming is the third resistor is a two-terminal device which looks as though it might be uninsulated carbon-film; the unused side is marked "45R3J". Their positions do not lead to useful inferences as to which is which. The transistor is in a metal-can package (the size some 8mm in diameter and 7mm high); it is marked "12D" in three places around the top and "3-73*" where the * represents a small black diamond, or (if you prefer) square turned 45?, near the bottom. The inductor assemblies are marked "2597-AS" and "573" on one, "2597-AR" and "473" on the other. /~\ The ASCII der Mouse \ / Ribbon Campaign X Against HTML mouse at rodents.montreal.qc.ca / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B