Abstract:
A telephone cable adapter is provided to distribute and translate the conductor pairs of a telephone cable to electrically connect and translate the color code to a noncorresponding multi-plug telephone set. The adapter has a plurality of male plugs adapted for connection to corresponding connectors of the telephone cable; and a plurality of female connectors, different in number from the male plugs, adapted for connection to corresponding plugs of the telephone set. The pins of the male plugs are electrically connected to sockets of the female connectors by conductors, such as wires or printed circuit pathways, to direct and translate conductor pairs of the cable to the connectors and color code of the telephone set.

Description:
FIELD OF THE INVENTION 
     The present invention relates to a telephone cable adapter for connecting a telephone set to a dissimilar telephone cable. 
     BACKGROUND OF THE INVENTION 
     Telephone cable adapters are old and well known. Telephone cable adapters are provided that divide conductors of a telephone cable into two branches for two telephones. Telephone cable-color code adapters are also provided that adapt and connect conductors of a telephone cable to conductors of another telephone cable or telephone set having the same number of conductor groups and connectors. It has not, however, been suggested that cable adapters could be provided to readily connect multi-connector telephone cables to non-corresponding multi-plug telephone sets. To the contrary, it has been the practice to wholly change the telephone cable system to utilize a new telephone set dissimilar from the old set. 
     In a telephone cable the conductors are paired and color coded to provide for wiring to the telephone system. Utilized are 10 different colors of wire insulation each with the same 10 colors as tracers on the insulation. The colors are blue (BL), orange (O), green (G), brown (BR), slate (S), white (W), red (R), black (BK), yellow (Y), and violet (V). This permits for 25 of pairs of conductors in the color code. These 25 pairs of typically terminated at sockets of a single female connector. In a telephone cable containing more than 25 pairs of conductors, the conductors are divided into groups typically of 20 or 25 pairs and terminated at more than one connector. Each group contains the same color code and has a colored string called a binder spiraled about the group. The colors of the binders of the differing groups of each cable follow the same color code as that of the conductor pairs. For example, a telephone cable of 75 pairs of conductors has blue (BL), orange (O), and green (G) binders. The same color code is used on the conductor pairs of the telephone cord, and the conductor pairs are terminated at pins of male plugs corresponding to the female connectors of the cable. In this way, the conductors of the cable can be readily connected by the service personnel to the proper terminals of the telephone set. 
     The problem is that different telephone sets correspond to different multi-group, multi-connector cables. For example, an 18-button telephone set is equipped with three 50-pin plugs and is used with a three-group, three-connector 75-pair telephone cable, while a 30-button Call-Director TM  telephone set is equipped with five 50-pin plugs and is used with a five-group, five-connector 100-pair telephone cable. Therefore, if a telephone system is up-graded from the 18-button telephone set to the larger 30-button telephone set, it has been common practice to replace the 75-pair cable with a 100-pair cable. Generally, the 75-pair cable is wasted. Moreover, the placing and routing of telephone cables between the relay equipment and the telephone is the major time and expense in installing a telephone service. The routing of the cable can be either by conduit, overhead, floor duct or exposed fastener. Thus, the changing of a telephone cable system can be a larger and more expensive project than installation of the original service. 
     The present invention overcomes this difficulty and disadvantage of telephone installation. It provides a telephone cable adapter that automatically directs, distributes and translates conductor pairs of a telephone cable to the plugs and color code of a dissimilar multi-plug telephone set. 
     SUMMARY OF THE INVENTION 
     A telephone adapter is provided which can readily electrically adapt and translate the color code of a telephone cable to a non-corresponding multi-plug telephone set. The adapter comprises a plurality of male plugs, and a plurality of female connectors different in number from the male plugs. 
     Each plug has a plurality of pairs of pins, preferably 25 in number, adapted for connection to pairs of sockets of a corresponding connector of a telephone cable. And each connector has a plurality of pairs of sockets, preferably 25 in number, adapted for connection to pairs of pins of a corresponding plug of a telephone set. 
     The pins of the male plugs are electrically connected by conductors, such as wires or printed circuit conductive pathway, to sockets of the female connectors. The conductors are thus arranged and connected between the plugs and connectors to direct, translate and distribute the conductor pairs of the telephone cable to the dissimilar plugs and color code of the telephone set. 
     Other details, objects and advantages of the invention will become apparent as the following description of the preferred embodiment and the presently preferred methods of practicing the same proceeds. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     In the accompanying drawings, the preferred embodiments of the invention and the presently preferred methods of practicing the invention are illustrated, in which: 
     FIG. 1 is a top view of a telephone cable adapter in accordance with the present invention; 
     FIG. 2 is a side elevational view of the telephone cable adapter shown in FIG. 1; 
     FIG. 3 is a top view of one of the connectors of the adapter shown in FIG. 1 with the dust cover removed; 
     FIG. 4 is a top view of one of the plugs of the adapter shown in FIG. 1 with the dust cover removed; and 
     FIGS. 5A-5C are circuit schematics illustrating the connections within the telephone adapter shown in FIG. 1. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     An embodiment of the invention is shown which is utilized particularly to adapt a three-group, three-connector, 75-pair telephone cable for connection to a five-plug, 30-button Call-Director TM  telephone. The adapter involves utilization of three male plugs each having 25 pairs of pins, and five female connectors each having at least 20 and preferably 25 pairs of sockets. This embodiment is a particularly useful form of the invention; the invention may, however, be otherwise variously embodied and used. 
     Referring specifically to FIGS. 1 and 2, telephone cable adapter 10 is comprised of five female connectors 11 and three male plugs 12. Connectors 11 and plugs 12 are arranged in spaced parallel relation as shown on FIG. 1, and fastened to mounting plate 13 of acrylic plastic or other suitable rigid electrically insulating material. Connectors 11 and plugs 12 are fastened to mounting plate 13 by open rivets 14, adhesive or any other suitable means, and screws 15 are threaded through openings in plate 13 and rivets 14 at the edges of the plate to provide for fastening of connectors of the cable and plugs of the telephone cord to the adapter. 
     Through mounting plate 13 are openings (not shown) to provide for electrical connection of connectors 11 with plugs 12 as hereinafter described. The assembly also preferably includes housing 16, most desirably fastened to mounting plate 13 by an adhesive, to enclose and support the electrical connections between connectors 11 and plugs 12. 
     Referring to FIG. 3, each female connector 11 preferably has two spaced apart rows of sockets 17 in 25 pairs. Each pair of sockets 17 is adapted for connection to pairs of pins of a corresponding male plug of a telephone set cord, and are color coded suitable for that correspondence. 
     Referring to FIG. 4, each male plug 12 has two spaced apart rows of pins 18 in 25 pairs. Each pair of pins 18 is adapted for connection to a corresponding pair of sockets of a connector of a telephone cable and is color coded suitable for that correspondence. 
     Each pin 18 of each male plug 12 is electrically connected to a socket 17 of a female connector 11 by suitable wires or other electrical conductor such as printed circuit conductive pathway. The conductor pairs of the telephone cable are thus directed and translated to the conductor pairs of a telephone set having a different number of plugs and color code of the conductors of the cord from the connectors and color code of conductors in the telephone cable. 
     Referring to FIGS. 5A-5C the direction and translation of the conductors is shown. Each telephone line (or button) of the telephone set requires five conductors to completely activated and control the line: Ring R and Tip T that provide the talk path, Lead A that controls the &#34;A&#34; relay, and Lamp L and Lamp Ground LG that energize and control the lamp associated with the particular button and line. And the hold button requires only conductor A 1  ground, and the ringer requires only two conductors R and B to operate. The specific direction and translation of said conductor pairs is described in tabular form in Table I below: 
     
                                           TABLE I__________________________________________________________________________RELAY EQUIP.   75-PAIR TELEPHONE CABLE                                ADAPTER__________________________________________________________________________Ref. No. Lead  Binder              Wire                  Tracer                      Connector                            Socket                                Pin Plug                                        Wire                                            Tracer                                                Connector                                                      Socketof WireLine    Designation          Color              Color                  Color                      No.   No. No. No. Color                                            Color                                                No.   No.__________________________________________________________________________20   1   R     BL  BL  W   1     1   1   1   BL  W   1     121   1   T     BL  W   BL  1     26  26  1   W   BL  1     2622   1   A     BL  W   O   1     27  27  1   W   O   1     2723   1   L     BL  G   W   1     3   3   1   G   W   1     324   1   LG    BL  W   G   1     28  28  1   W   G   1     2825   2   R     BL  BR  W   1     4   4   1   BR  W   1     426   2   T     BL  W   BR  1     29  29  1   W   BR  1     2927   2   A     BL  W   S   1     30  30  1   W   S   1     3028   2   L     BL  BL  R   1     6   6   1   BL  R   1     629   2   LG    BL  R   BL  1     31  31  1   R   BL  1     3130   3   R     BL  O   R   1     7   7   1   O   R   1     731   3   T     BL  R   O   1     32  32  1   R   O   1     3232   3   A     BL  R   G   1     33  33  1   R   G   1     3333   3   L     BL  BR  R   1     9   9   1   BR  R   1     934   3   LG    BL  R   BR  1     34  34  1   R   BR  1     3435   4   R     BL  S   R   1     10  10  1   S   R   1     1036   4   T     BL  R   S   1     35  35  1   R   S   1     3537   4   A     BL  BK  BL  1     36  36  1   BK  BL  1     3638   4   L     BL  O   BK  1     12  12  1   O   BK  1     1239   4   LG    BL  BK  O   1     37  37  1   BK  O   1     3740   5   R     BL  G   BK  1     13  13  1   G   BK  1     1341   5   T     BL  BK  G   1     38  38  1   BK  G   1     3842   5   A     BL  BK  BR  1     39  39  1   BK  BR  1     3943   5   L     BL  S   BK  1     15  15  1   S   BK  1     1544   5   LG    BL  BK  S   1     40  40  1   BK  S   1     4045   6   R     BL  BL  Y   1     16  16  1   BL  Y   2     146   6   T     BL  Y   BL  1     41  41  1   Y   BL  2     2647   6   A     BL  BR  BK  1     14  14  1   BR  BK  2     2748   6   L     BL  G   Y   1     18  18  1   G   Y   2     349   6   LG    BL  Y   G   1     43  43  1   Y   G   2     2850   7   R     BL  BR  Y   1     19  19  1   BR  Y   2     451   7   T     BL  Y   BR  1     44  44  1   Y   BR  2     2952   7   A     BL  BL  BK  1     11  11  1   BL  BK  2     3053   7   L     BL  BL  V   1     21  21  1   BL  V   2     654   7   LG    BL  V   BL  1     46  46  1   V   BL  2     3155   8   K     BL  O   V   1     22  22  1   O   V   2     756   8   T     BL  V   O   1     47  47  1   V   O   2     3257   8   A     BL  G   R   1     8   8   1   G   R   2     3358   8   L     BL  BR  V   1     24  24  1   BR  V   2     959   8   LG    BL  V   BR  1     49  49  1   V   BR  2     3460   9   R     BL  S   V   1     25  25  1   S   V   2     1061   9   T     BL  V   S   1     50  50  1   V   S   2     3562   9   A     BL  S   W   1     5   5   1   S   W   2     3663   9   L     BL  G   V   1     23  23  1   G   V   2     1264   9   LG    BL  V   G   1     48  48  1   V   G   2     3765       A1    BL  O   W   1     2   2   1   O   W   1     266       spare BL  O   Y   1     17  17  1   O   Y   1     1767       spare BL  Y   O   1     42  42  1   Y   O   1     4268       R     BL  S   Y   1     20  20  1   S   Y   1     2069       B     BL  Y   S   1     45  45  1   Y   S   1     4570   10  R     O   BL  W   2     1   1   2   BL  W   2     1371   10  T     O   W   BL  2     26  26  2   W   BL  2     3872   10  A     O   W   O   2     27  27  2   W   O   2     3973   10  L     O   G   W   2     3   3   2   G   W   2     1574   10  LG    O   W   G   2     28  28  2   W   G   2     4075   11  R     O   BR  W   2     4   4   2   BR  W   2     1676   11  T     O   W   BR  2     29  29  2   W   BR  2     4177   11  A     O   W   S   2     30  30  2   W   S   2     4278   11  L     O   BL  R   2     6   6   2   BL  R   2     1879   11  LG    O   R   BL  2     31  31  2   R   BL  2     4380   12  R     O   O   R   2     7   7   2   O   R   3     181   12  T     O   R   O   2     32  32  2   R   O   3     2682   12  A     O   R   G   2     33  33  2   R   G   3     2783   12  L     O   BR  R   2     9   9   2   BR  R   3     384   12  LG    O   R   BR  2     34  34  2   R   BR  3     2885   13  R     O   S   R   2     10  10  2   S   R   3     486   13  T     O   R   S   2     35  35  2   R   S   3     2987   13  A     O   BK  BL  2     36  36  2   BK  BL  3     3088   13  L     O   O   BK  2     12  12  2   O   BK  3     689   13  LG    O   BK  O   2     37  37  2   BK  O   3     3190   14  R     O   G   BK  2     13  13  2   G   BK  3     791   14  T     O   BK  G   2     38  38  2   BK  G   3     3292   14  A     O   BK  BR  2     39  39  2   BK  BR  3     3393   14  L     O   S   BK  2     15  15  2   S   BK  3     994   14  LG    O   BK  S   2     40  40  2   BK  S   3     3495   15  R     O   BL  Y   2     16  16  2   BL  Y   3     1096   15  T     O   Y   BL  2     41  41  2   Y   BL  3     3597   15  A     O   BR  BK  2     14  14  2   BR  BK  3     3698   15  L     O   G   Y   2     18  18  2   G   Y   3     1299   15  LG    O   Y   G   2     43  43  2   Y   G   3     37100  16  K     O   BR  Y   2     19  19  2   BR  Y   3     13101  16  T     O   Y   BR  2     44  44  2   Y   BR  3     38102  16  A     O   BL  BK  2     11  11  2   BL  BK  3     39103  16  L     O   BL  V   2     21  21  2   BL  V   3     15104  16  LG    O   V   BL  2     46  46  2   V   BL  3     40105  17  R     O   O   V   2     22  22  2   O   V   3     16106  17  T     O   V   O   2     47  47  2   V   O   3     41107  17  A     O   G   R   2     8   8   2   G   R   3     42108  17  L     O   BR  V   2     24  24  2   BR  V   3     18109  17  LG    O   V   BR  2     49  49  2   V   BR  3     43110  18  R     O   S   V   2     25  25  2   S   V   4     1111  18  T     O   V   S   2     50  50  2   V   S   4     26112  18  A     O   S   W   2     5   5   2   S   W   4     27113  18  L     O   G   V   2     23  23  2   G   V   4     3114  18  LG    O   V   G   2     48  48  2   V   G   4     28115  19  R     O   S   Y   2     20  20  2   S   Y   4     4116  19  T     O   Y   S   2     45  45  2   Y   S   4     29117  19  A     O   O   W   2     2   2   2   O   W   4     30118  19  L     O   O   Y   2     17  17  2   O   Y   4     6119  19  LG    O   Y   O   2     42  42  2   Y   O   4     31120  20  R     G   BL  W   3     1   1   3   BL  W   4     7121  20  T     G   W   BL  3     26  26  3   W   BL  4     32122  20  A     G   W   O   3     27  27  3   W   O   4     33123  20  L     G   G   W   3     3   3   3   G   W   4     9124  20  LG    G   W   G   3     28  28  3   W   G   4     34125  21  R     G   BR  W   3     4   4   3   BR  W   4     10126  21  T     G   W   BR  3     29  29  3   W   BR  4     35127  21  A     G   W   S   3     30  30  3   W   S   4     36128  21  L     G   BL  R   3     6   6   3   BL  R   4     12129  21  LG    G   R   BL  3     31  31  3   R   BL  4     37130  22  R     G   O   R   3     7   7   3   O   R   4     13131  22  T     G   R   O   3     32  32  3   R   O   4     38132  22  A     G   R   G   3     33  33  3   R   G   4     39133  22  L     G   BR  R   3     9   9   3   BR  R   4     15134  22  LG    G   R   BR  3     34  34  3   R   BR  4     40135  23  R     G   S   R   3     10  10  3   S   R   4     16136  23  T     G   R   S   3     35  35  3   R   S   4     41137  23  A     G   BK  BL  3     36  36  3   BK  BL  4     42138  23  L     G   O   BK  3     12  12  3   O   BK  4     18139  23  LG    G   BK  O   3     37  37  3   BK  O   4     43140  24  R     G   G   BK  3     13  13  3   G   BK  5     1141  24  T     G   BK  G   3     38  38  3   BK  G   5     26142  24  A     G   BK  BR  3     39  39  3   BK  BR  5     27143  24  L     G   S   BK  3     15  15  3   S   BK  5     3144  24  LG    G   BK  S   3     40  40  3   BK  S   5     28145  25  R     G   BL  Y   3     16  16  3   BL  Y   5     4146  25  T     G   Y   BL  3     41  41  3   Y   BL  5     29147  25  A     G   BR  BK  3     14  14  3   BR  BK  5     30148  25  L     G   G   Y   3     18  18  3   G   Y   5     6149  25  LG    G   Y   G   3     43  43  3   Y   G   5     31150  26  R     G   BR  Y   3     19  19  3   BR  Y   5     7151  26  T     G   Y   BR  3     44  44  3   Y   BR  5     32152  26  A     G   BL  BK  3     11  11  3   BL  BK  5     33153  26  L     G   BL  V   3     21  21  3   BL  V   5     9154  26  LG    G   V   BL  3     46  46  3   V   BL  5     34155  27  R     G   O   V   3     22  22  3   O   V   5     10156  27  T     G   V   O   3     47  47  3   V   O   5     35157  27  A     G   G   R   3     8   8   3   G   R   5     36158  27  L     G   BR  V   3     24  24  3   BR  V   5     12159  27  LG    G   V   BR  3     49  49  3   V   BR  5     37160  28  R     G   S   V   3     25  25  3   S   V   5     13161  28  T     G   V   S   3     50  50  3   V   S   5     38162  28  A     G   S   W   3     5   5   3   S   W   5     39163  28  L     G   G   V   3     23  23  3   G   V   5     15164  28  LG    G   V   G   3     48  48  3   V   G   5     40165  29  R     G   A   Y   3     20  20  3   S   Y   5     16166  29  T     G   Y   S   3     45  45  3   Y   S   5     41167  29  A     G   O   W   3     2   2   3   O   W   5     42168  29  L     G   O   Y   3     17  17  3   O   Y   5     18169  29  LG    G   Y   O   3     42  42  3   Y   O   5     43__________________________________________________________________________RELAY EQUIP.   30-BUTTON TELEPHONE SET__________________________________________________________________________          Mounting Cord                 Designation__________________________________________________________________________Ref. No. Lead  Pin   Plug  Wire  Tracer                                  Binder                                        Leadof WireLine    Designation          No.   No.   Color Color Color Designation                                              Module                                                    Button__________________________________________________________________________20   1   R     1     1     BL    W     BL    R     1     121   1   T     26    1     W     BL    BL    T     1     122   1   A     27    1     W     O     BL    A     1     123   1   L     3     1     G     W     BL    L     1     124   1   LG    28    1     W     G     BL    LG    1     125   2   R     4     1     BR    W     BL    R     1     226   2   T     29    1     W     BR    BL    T     1     227   2   A     30    1     W     S     BL    A     1     228   2   L     6     1     BL    R     BL    L     1     229   2   LG    31    1     R     BL    BL    LG    1     230   3   R     7     1     O     R     BL    R     1     331   3   T     32    1     R     O     BL    T     1     332   3   A     33    1     R     G     BL    A     1     333   3   L     9     1     BR    R     BL    L     1     334 3 LG  34    1     R     BR    BL    LG    1     335   4   R     10    1     S     R     BL    R     1     436   4   T     35    1     R     S     BL    T     1     437   4   A     36    1     BK    BL    BL    A     1     438   4   L     12    1     O     BK    BL    L     1     439   4   LG    37    1     BK    O     BL    LG    1     440   5   R     13    1     G     BK    BL    R     1     541   5   T     38    1     BK    G     BL    T     1     542   5   A     39    1     BK    BR    BL    A     1     543   5   L     15    1     S     BK    BL    L     1     544   5   LG    40    1     BK    S     BL    LG    1     545   6   R     1     2     BL    W     O     R     2     146   6   T     26    2     W     BL    O     T     2     147   6   A     27    2     W     O     O     A     2     148   6   L     3     2     G     W     O     L     2     149   6   LG    28    2     W     G     O     LG    2     150   7   R     4     2     BR    W     O     R     2     251   7   T     29    2     W     BR    O     T     2     252   7   A     30    2     W     S     O     A     2     253   7   L     6     2     BL    R     O     L     2     254   7   LG    31    2     R     BL    O     LG    2     255   8   K     7     2     O     R     O     R     2     356   8   T     32    2     R     O     O     T     2     357   8   A     33    2     R     L     O     A     2     358   8   L     9     2     BR    R     O     L     2     359   8   LG    34    2     R     BR    O     LG    2     360   9   R     10    2     S     R     O     R     2     461   9   T     35    2     R     S     O     T     2     462   9   A     36    2     BK    BL    O     A     2     463   9   L     12    2     O     BK    O     L     2     464   9   LG    37    2     BK    O     O     LG    2     465       A1    2     1     O     W     BL    A1    1     Hold66       spare 17    1     O     Y     BL    spare 167       spare 42    1 Y   O     BL    spare 168       R     20    1     S     Y     BL    R     1     Ring69       B     45    1     Y     S     BL    B     1     Ring70   10  R     13    2     G     BK    O     R     2     571   10  T     38    2     BK    G     O     T     2     572   10  A     39    2     BK    BR    O     A     2     573   10  L     15    2     S     BK    O     L     2     574   10  LG    40    2     BK    A     O     LG    2     575   11  R     16    2     BL    Y     O     R     2     676   11  T     41    2     Y     BL    O     T     2     677   11  A     42    2     Y     O     O     A     2     678   11  L     18    2     G     Y     O     L     2     679   11  LG    43    2     Y     G     O     LG    2     680   12  R     1     3     BL    W     G     R     3     181   12  T     26    3     W     BL    G     T     3     182   12  A     27    3     W     O     G     A     3     183   12  L     3     3     G     W     G     L     3     184   12  LG    28    3     W     G     G     LG    3     185   13  R     4     3     BR    W     G     R     3     286   13  T     29    3     W     BR    G     T     3     287   13  A     30    3     W     S     G     A     3     288   13  L     6     3     BL    R     G     L     3     289   13  LG    31    3     R     BL    G     LG    3     290   14  R     7     3     O     R     G     R     3     391   14  T     32    3     R     O     G     T     3     392   14  A     33    3     R     G     G     A     3     393   14  L     9     3     BR    R     G     L     3     394   14  LG    34    3     R     BR    G     LG    3     395   15  R     10    3     S     R     G     R     3     496   15  T     35    3     R     S     G     T     3     497   15  A     36    3     BK    BL    G     A     3     498   15  L     12    3     O     BK    G     L     3     499   15  LG    37    3     BK    O     G     LG    3     4100  16  K     13    3     G     BK    G     R     3     5101  16  T     38    3     BK    G     G     T     3     5102  16  A     39    3     BK    BR    G     A     3     5103  16  L     15    3     S     BK    G     L     3     5104  16  LG    40    3     BK    S     G     LG    3     5105  17  R     16    3     BL    Y     G     R     3     6106  17  T     41    3     Y     BL    G     T     3     6107  17  A     42    3     Y     O     G     A     3     6108  17  L     18    3     G     Y     G     L     3     6109  17  LG    43    3     Y     G     G     LG    3     6110  18  R     1     4     BL    W     BR    R     4     1111  18  T     26    4     W     BL    BR    T     4     1112  18  A     27    4     W     O     BR    A     4     1113  18  L     3     4     G     W     BR    L     4     1114  18  LG    28    4     W     G     BR    LG    4     1115  19  R     4     4     BR    W     BR    R     4     2116  19  T     29    4     W     BR    BR    T     4     2117  19  A     30    4     W     S     BR    A     4     2118  19  L     6     4     BL    R     BR    L     4     2119  19  LG    31    4     R     BL    BR    LG    4     2120  20  R     7     4     O     R     BR    R     4     3121  20  T     32    4     R     O     BR    T     4     3122  20  A     33    4     R     G     BR    A     4     3123  20  L     9     4     BR    R     BR    L     4     3124  20  LG    34    4     R     BR    BR    LG    4     3125  21  R     10    4     S     R     BR    R     4     4126  21  T     35    4     R     S     BR    T     4     4127  21  A     36    4     BK    BL    BR    A     4     4128  21  L     12    4     O     BK    BR    L     4     4129  21  LG    37    4     BK    O     BR    LG    4     4130  22  R     13    4     G     BK    BR    R     4     5131  22  T     38    4     BK    G     BR    T     4     5132  22  A     39    4     BK    BR    BR    A     4     5133  22  L     15    4     S     BK    BR    L     4     5134  22  LG    40    4     BK    S     BR    LG    4     5135  23  R     16    4     BL    Y     BR    R     4     6136  23  T     41    4     Y     BL    BR    T     4     6137  23  A     42    4     Y     O     BR    A     4     6138  23  L     18    4     G     Y     BR    L     4     6139  23  LG    43    4     Y     G     BR    LG    4     6140  24  R     1     5     BL    W     S     R     5     1141  24  T     26    5     W     BL    S     T     5     1142  24  A     27    5     W     O     S     A     5     1143  24  L     3     5     G     W     S     L     5     1144  24  LG    28    5     W     G     S     LG    5     1145  25  R     4     5     BR    W     S     R     5     2146  25  T     29    5     W     BR    S     T     5     2147  25  A     30    5     W     S     S     A     5     2148  25  L     6     5     BL    R     S     L     5     2149  25  LG    31    5     R     BL    S     LG    5     2150  26  R     7     5     O     R     S     R     5     3151  26  T     32    5     R     O     S     T     5     3152  26  A     33    5     R     G     S     A     5     3153  26  L     9     5     BR    R     S     L     5     3154  26  LG    34    5     R     BR    S     LG    5     3155  27  R     10    5     S     R     S     R     5     4156  27  T     35    5     R     S     S     T     5     4157  27  A     36    5     BK    BL    S     A     5     4158  27  L     12    5     O     BK    S     L     5     4159  27  LG    37    5     BK    O     S     LG    5     4160  28  R     13    5     G     BK    S     R     5     5161  28  T     38    5     BK    G     S     T     5     5162  28  A     39    5     BK    BR    S     A     5     5163  28  L     15    5     S     BK    S     L     5     5164  28  LG    40    5     BK    S     S     LG    5     5165  29  R     16    5     BL    Y     S     R     5     6166  29  T     41    5     Y     BL    S     T     5     6167  29  A     42    5     Y     O     S     A     5     6168  29  L     18    5     G     Y     S     L     5     6169  29  LG    43    5     Y     G     S     LG    5     6__________________________________________________________________________ 
    
     From Table I, it is seen that a 30-button Call-Director TM  telephone set requires a total of 148 conductors to be completely operational, but these 148 conductors are arranged in a cord in five groups and equipped with five male plugs. On the other hand, the 75 pair telephone cable has 150 conductors arranged in three groups and equipped with three connectors. By utilizing an adapter of the present invention, the conductors from the telephone cable are directed to the proper positions in the five plugs of the telephone cord and translated to the color code of the conductors of the telephone cord. The 75 pair telephone cable accordingly can be utilized to operate the 30-button Call-Director TM  telephone set. 
     While the presently preferred embodiments of the invention have been shown and described with particularity, it is distinctly understood that the invention may be otherwise variously embodied and used within the scope of the following claims.