Last updated Nov 4 22:53
%%%%%%%%%% Descriptions start at remote reader and move to host %%%%%%%%%
===================== Modular Service cords =====================
MMJ to RJ12 service connector cord. (by signal)
wire   id     MMJ     RJ12
w/gre  gnd    1       1 (X)
w/blu  T-     2       2 (yellow)
blu/w  T+     3       3 (green)
ora/w  R+     4       4 (red)
w/ora  R-     5       5 (black)
gre/w  unused 6       6 (Z)

RJ45 (568B) to RJ12 service connector cord. (by pin number)
wire   pin     RJ45         RJ12
w/ora  1       R- (black)   gnd (X)
ora/w  2       R+ (red)     T- (yellow)
w/gre  3       nop (Z)      T+ (green)
blu/w  4       T+ (green)   R+ (red)
w/blu  5       T- (yellow)  R- (black)
gre/w  6       gnd (X)      nop (Z)
brn/w  7       unused       -
w/brn  8       unused       -

RJ45 (568B) to RJ12 service connector cord. (by signal)
wire   id     RJ45    RJ12
gre/w  gnd    6       1 (X)
w/blu  T-     5       2 (green)
blu/w  T+     4       3 (yellow)
ora/w  R+     2       4 (black)
w/ora  R-     1       5 (red)
w/gre  unused 3       6 (Z)
brn/w  unused 7       -
w/brn  unused 8       -

=================== Modular Jacks =========================
MMJ AT-35
w/gre  1  gnd
w/blu  2  T-
blu/w  3  T+
ora/w  4  R+
w/ora  5  R-
gre/w  6  gnd

RJ45 568B AT-55/Panduit
ora/w  1  R-
w/ora  2  R+
w/gre  3  gnd
w/blu  4  T-
blu/w  5  T+
gre/w  6  gnd
brn/w  7  unused
w/brn  8  unused

==================== From Converters to 485 BUS or Jacks ================
==================== 232 to 485 converters (485 side) ===================
COM/LCONV
1 (R-)  <-> w/ora
2 (R+)  <-> ora/w
3 (GND) <-> w/gre + gre/w
4 (T-)  <-> w/blu
5 (T+)  <-> blu/w

IC108A|IC109A-R3
TxA  T- w/blu
TxB  T+ blu/w
RxA  R- w/ora
RxB  R+ ora/w
no ground

IC1476A-F
TDA(-) T- w/blu
TDB(+) T+ blu/w
RDA(-) R- w/ora
RDB(+) R+ ora/w

================== Between Line Driver and Converter ===================
==================  232 to 485 converters (232 side) ==================
L/D to Converter (IC108A,IC109A-R3,Com/Lcomv)
DB25   <--->   DB25
2              2
3              3
7              7

L/D to Converter (IC1476A-F)
DB25   <--->   DB25
2              3
3              2
7              7

=========================== HOST Auxillary cabinet =====================
L/D to Patch Panel (USOC Panel)
L/D Screw Terminals   <--->   RJ11
r+  white/orange              1
r-  orange/white              4
t+  white/blue                3
t-  blue/white                2
g   not connected

RJ45 to DB25 adaptor (straight)
RJ45   <--->   DB25
tx 3          tx 2
rx 6          rx 3
g 5            g 7

Splitter (COM/LSPLIT) to L/D
RJ12   <--->   RJ45   <--->   DB25
1 bu           5              7
2 ye
3 gr tx        6              3
4 re rx        3              2
5 bl
6 wh
* wires swapped at RJ45 end

====================== Host Only ========================
N/P I/O Panel to (Host Server Port|Line Driver w/adaptor)
RJ12   <--->   RJ45
1 g            4 t-
2 g            5 r-|g
3 rx           3 t+
4 tx           6 r+
5 g            2
6 g            1

HP MUX serial ports
10    8
1     X    ring ind
2     1    request to send
3     2    data terminal ready
4     3    receive data
5     4    signal ground
6     5    transmit data
7     6    signal ground
8     7    carrier detect
9     8    clear to send
10    X    data set ready

NP/IO Panel RJ-12 sockets (RS232)
1 gnd
2 gnd
3 receive
4 transmit
5 gnd
6 gnd

==================== XYPLEX USE ONLY ====================

Remote Port to Splitter (Splitter phone)
RJ45   <--->   RJ12
1 bu           1
2 ye           2
3 gr tx        3
4 bl -         5
5 wh -         6
6 re rx        4
7 --           -
8 --           -
* wires swapped at RJ45 end

Xyplex 1620 port pinout
1 cts/ring
2 dtr
3 xmt
4 xmtgnd
5 rcvgnd
6 rcv
7 dsr/dcd
8 rts

======================== vt220 terminal ==================
DEC MMJ vt series terminal
1 dtr
2 xmt     tx
3 xmtgnd  g
4 rcvgnd  g
5 rcv     rx
6 dsr