HK1095200B - Local area network cabling arrangement with randomized variation - Google Patents

Description

Local area network connection device with random variation

Technical Field

The invention relates to a cable connecting medium using a plurality of twisted wires. More particularly, the present invention relates to a twisting method of twisted pairs constituting a cabling medium, which enables relatively high bit rate transmission and reduces the probability of transmission errors due to external and internal crosstalk.

Background

As the use of computers in homes and offices has grown tremendously, there is a need for a cabling medium that can be used to connect peripheral devices to a computer and to connect multiple computers and peripheral devices to a common network. Computers and peripheral devices today operate at ever increasing data transfer rates. Thus, there is a continuing need to develop cabling media that can operate substantially error-free at higher bit rates and meet a variety of advanced operating performance standards, such as reducing alien crosstalk in high cable density applications.

U.S. patent 5,952,607, which is incorporated herein by reference, discloses a typical stranding method used in conventional twisted pair cables. Fig. 1 shows four pairs of wires (a first pair a, a second pair B, a third pair C and a fourth pair D) housed in a common sleeve, constituting a first common cable E. In fig. 1, the jacket is partially removed at the end of the cable and twisted pairs A, B, C, D are separated so that the twisting process is clearly visible. Fig. 1 also shows a second common cable J that is separate from the first common cable E but has the same structure as the first common cable E. The second common cable J also comprises four pairs of wires (fifth pair F, sixth pair G, seventh pair H and eighth pair I) housed in a common sleeve.

Each pair of wires A, B, C, D has a fixed twist spacing a, b, c, d, respectively. Since the first and second common cables E and J are identical in structure, each twisted pair F, G, H, I also has the same fixed twist spacing a, b, c, d, respectively. Each twist interval a, b, c, d is different from the twist intervals of the other twisted pairs. As is well known in the art, this configuration helps to reduce crosstalk between twisted pairs within the first common cable E. In addition, as is generally known in the art, each twisted pair has a unique fixed twist interval that is slightly greater than or less than 0.500. The following table summarizes the twist intervals of the first through eighth twisted pairs A, B, C, D, F, G, H, I:

twisted pair numbering	Lay length	Minimum strand length	Maximum strand length
				A/F	0.440	0.430	0.450
B/G	0.410	0.400	0.420
				C/H	0.596	0.580	0.610
D/I	0.670	0.650	0.690

Cable connection media having the above-described stranding mechanism, such as that disclosed in U.S. patent 5,952,607, have been commercially successful. However, as the demand for faster data transmission speeds continues to increase, it is clear that the background art cabling media has drawbacks. That is, the prior art cabling media exhibit unacceptable levels of near-end external crosstalk (ANEXT) at higher data transmission rates. Fig. 2-5 illustrate ANEXT for twisted pair A, B, C, D of a cable connection medium in accordance with the background art.

To measure ANEXT of twisted pair, industry standard detection techniques using a Vector Network Analyzer (VNA) are employed. Briefly, to obtain the data of FIG. 2, the output of VNA is connected to twisted pair F of cable J, while the input of VNA is connected to twisted pair A of cable E. The VNA is used to scan over the frequency band from 0.500MHz to 1000MHz and obtain the ratio of the signal strength detected on twisted pair a to the signal strength applied to twisted pair F. This is ANEXT that twisted pair F in cable J contributes to twisted pair a in cable E. The contributions of twisted pairs G, H and I in cable J to twisted pair a in cable E are obtained in the same manner. The sum of the power contributed by twisted pair F, G, H in cable J and J to twisted pair a in cable E is ANEXT contributed by all twisted pairs in cable J to twisted pair a in cable E and is shown in fig. 2 on a logarithmic scale as trace t 1.

To obtain the traces t2-t4 in the graphs of fig. 3-5, the above process is repeated for the second, third and fourth twisted pairs B, C, D in cable E. The graphs of fig. 2-5 represent ANEXT for frequencies between 0.500MHz and 1000 MHz. The reference line REF depicted by the function 44.3-15 log (f/100) dB, where f is in MHz, is included in fig. 2-5 and is used as a reference on which acceptable ANEXT performance can be obtained. These tests are typically used to verify the suitability of cabling media, when used as cabling media, to be better than minimum standards and quality, such as CAT 5, CAT 5e and/or CAT 6. As can be seen in fig. 2-5, ANEXT of the background art cabling media becomes unacceptable because it intersects the reference line F at higher frequencies between 10MHz-200 MHz.

The reference line REF in fig. 2-5 is also used to show the improvement in ANEXT performance of the present invention compared to the background art. The reference line REF is logarithmic, however, exhibits linearity when plotted on a logarithmic scale and can be described by the function 44.3-15 log (f/100) dB. The same reference line REF will be given in the performance graph characterizing the invention and will provide a criterion against which the performance results of the background art can be compared with those of the invention.

Disclosure of Invention

It is an object of the present invention to provide a cabling media having improved internal and alien crosstalk performance compared to existing cabling media.

In particular, it is an object of the present invention to provide a method of varying twist length and strand length to produce a cabling media employing a plurality of twisted pairs, wherein varying the twist length and/or strand length is effected for all four twisted pairs along each of the twisted pairs included to reduce the magnitude of internal and external crosstalk of the cabling media.

These and other objects are achieved by a cabling media comprising a plurality of twisted pairs housed within a jacket. Each twisted pair has a respective twist length, which is defined as the distance that the wires of the twisted pair twist about each other one complete revolution. According to such embodiments, the twist length of the twisted pairs is varied along a portion or the entire length of the cabling media. In one embodiment, the cabling media includes four twisted pairs, each twisted pair having its own twist length that varies along the length of the cabling media. The cabling media can be designed to meet the requirements of CAT 5, CAT 5e or CAT 6 cabling and demonstrates low alien and internal crosstalk characteristics even at data bit rates of 10 Gbit/sec.

In accordance with the present invention, a cabling media suitable for data transmission with relatively low crosstalk includes a plurality of pairs of metal conductors, each pair including two strands of plastic insulated metal conductors twisted together. The twist characteristics are set by parameters such as twist length and core strand length/setting. For example, the twist lengths of one or more twisted pairs may be purposefully varied within a set range along the length of the cabling media. In addition, the core strand length/arrangement can be varied in a targeted manner along the length of the cabling media within the set range. These twist lengths and core strand lengths/setting parameters are specifically selected to achieve performance that significantly improves the alien crosstalk encountered with existing Unshielded Twisted Pair (UTP) cables.

According to a particular embodiment of the invention, a cable comprises four twisted pairs of conductors each insulated from the other as its transmission medium, each insulated conductor comprising a metal conductor and an insulating sheath surrounding the metal conductor. Twisting each pair of wires together exhibits the features specifically set forth herein and encasing the plurality of transmission media in a sheath system, which in the simplest embodiment may be a single sleeve made of a plastic material. The use of a particular twisting method for the wire pairs results in improved performance criteria for the resulting cable. In addition, the cables of the present invention are relatively easy to connect and relatively easy to manufacture and install.

Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. It should be understood, however, that the detailed description and the specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.

Drawings

The present invention will become more fully understood from the detailed description given herein below, which is given by way of example only, and thus is not limitative of the present invention, and the accompanying drawings in which:

FIG. 1 is a perspective view of two ends of two identical but separate cabling media with the jacket removed, showing four twisted pairs, in accordance with the background art;

FIG. 2 is a graph illustrating ANEXT performance of twisted pair A in cable E of FIG. 1 due to twisted pairs F, G, H and I in cable J;

FIG. 3 is a graph illustrating ANEXT performance of twisted pair B in cable E of FIG. 1 due to twisted pairs F, G, H and I in cable J;

FIG. 4 is a graph illustrating ANEXT performance of twisted pair C in cable E of FIG. 1 due to twisted pairs F, G, H and I in cable J;

FIG. 5 is a graph illustrating ANEXT performance of twisted pair D in cable E of FIG. 1 due to twisted pairs F, G, H and I in cable J;

FIG. 6 is a perspective view of two ends of two identical but separate cabling media with the jacket removed, showing four twisted pairs in each cabling media, in accordance with the present invention;

FIG. 7 is a graph illustrating ANEXT performance of twisted pair 3 of cable 1 of FIG. 6 due to twisted pairs 51, 53, 55 and 57 of cable 44;

FIG. 8 is a graph illustrating ANEXT performance of twisted pair 5 of cable 1 of FIG. 6 due to twisted pairs 51, 53, 55 and 57 of cable 44;

FIG. 9 is a graph illustrating ANEXT performance of twisted pair 7 of cable 1 of FIG. 6 due to twisted pairs 51, 53, 55 and 57 of cable 44;

FIG. 10 is a graph illustrating ANEXT performance of twisted pair 9 of cable 1 of FIG. 6 due to twisted pairs 51, 53, 55 and 57 of cable 44;

FIG. 11 is a perspective view of the central portion of the cable connection medium of FIG. 6 with the sleeve removed, showing the core strand twist spacing;

fig. 12 is a graph showing ANEXT performance of the first twisted pair 3 when the twisted pairs maintain respective constant twist lengths and the core strand length/setting is purposefully varied along the length of the cabling media;

fig. 13 is a graph showing ANEXT performance of the second twisted pair 5 when the twisted pairs maintain respective constant twist lengths and the core strand length/setting is purposefully varied along the length of the cabling media;

fig. 14 is a graph showing ANEXT performance of the third twisted pair 7 when the twisted pairs maintain respective constant twist lengths and the core strand length/setting is purposefully varied along the length of the cabling media by d 2;

fig. 15 is a graph showing ANEXT performance of the fourth twisted pair 9 when the twisted pairs maintain respective constant twist lengths and the core strand length/setting is purposefully varied along the length of the cabling media by d 2;

fig. 16 is a graph showing ANEXT performance of the first twisted pair 3 when the twist length of the twisted pairs is purposefully varied and the core strand length/setting is purposefully varied along the length of the cabling media d 2;

fig. 17 is a graph showing ANEXT performance of the second twisted pair 5 when the twist lengths of the twisted pairs are purposefully varied and the core strand length/setting is purposefully varied along the length of the cabling media d 2;

fig. 18 is a graph showing ANEXT performance of the third twisted pair 7 when the twist lengths of the twisted pairs are purposefully varied and the core strand length/setting is purposefully varied along the length of the cabling media d 2; and

the graph shown in fig. 19 shows ANEXT performance of the fourth twisted pair 9 when the twist lengths of the twisted pairs are purposefully varied and the core strand length/setting is purposefully varied along the length of the cabling media d 2.

Detailed Description

Fig. 6 shows two ends of two identical but separate cabling media according to the invention. The end of the first cable 1 has the jacket 2 removed showing a plurality of twisted pairs and the end of the second cable 44 has the jacket 43 removed showing a plurality of twisted pairs as well. Specifically, the embodiment of fig. 1 shows a first cable 1 having a first twisted pair 3, a second twisted pair 5, a third twisted pair 7 and a fourth twisted pair 9. Similarly, second cable 44 includes a fifth twisted pair 51, a sixth twisted pair 53, a seventh twisted pair 55, and an eighth twisted pair 57.

Each twisted pair contains two wires. Specifically, the first twisted pair 3 includes a first conductive wire 11 and a second conductive wire 13. The second twisted pair 5 comprises a third conductor 15 and a fourth conductor 17. The third twisted pair 7 comprises a fifth conductor 19 and a sixth conductor 21. The fourth twisted pair 9 comprises a seventh conductor 23 and an eighth conductor 25. The fifth twisted pair 51 includes a ninth conductor 27 and a tenth conductor 29. The sixth twisted pair 53 includes an eleventh conductor 31 and a twelfth conductor 33. Seventh twisted pair 55 includes thirteenth conductor 35 and fourteenth conductor 37. The eighth twisted pair 57 includes a fifteenth wire 39 and a sixteenth wire 41.

The wires 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41 are each constituted by an insulating layer surrounding the inner wire. The outer insulation layer may be formed of a flexible plastic material having flame retardant and smoke suppressant properties. The internal leads may be formed of a metal such as copper, aluminum, or an alloy thereof. It is also contemplated that the insulating layer and the inner conductor may also be formed from other suitable materials.

As shown in fig. 6, each twisted pair is formed by continuously twisting two wires around each other. For the first twisted pair 3, the first and second conductors 11 and 13 are twisted completely 360 degrees around each other at a first interval w along the length of the first cable 1. The first spacing w is varied in a targeted manner d2 along the length of the first cable 1. For example, the first spacing w can be varied in a targeted and random manner within a first range of values along the length of the first cable 1. Alternatively, the first spacing w can also be varied in a targeted manner in an algorithm along the length of the first cable 1.

For the second twisted pair 5, the third conductor 15 and the fourth conductor 17 are twisted completely 360 degrees around each other at a second interval x along the length of the first cable 1. The second spacing x is varied in a targeted manner d2 along the length of the first cable 1. For example, the second spacing x can be varied in a targeted and random manner within a second value range along the length of the first cable 1. Alternatively, the second distance x can also be varied in a targeted manner in an algorithm along the length of the first cable 1.

For the third twisted pair 7, the fifth conductor 19 and the sixth conductor 21 are twisted completely 360 degrees around each other at a third interval y along the length of the first cable 1. The third spacing y is varied in a targeted manner along the length of the first cable 1. For example, the third spacing y can be varied in a targeted and random manner within a third value range along the length of the first cable 1. Alternatively, the third spacing y can also be varied in a targeted manner in an algorithm along the length of the first cable 1.

For the fourth twisted pair 9, the seventh and eighth conductors 23, 25 are twisted completely 360 degrees around each other at a fourth spacing z along the length of the first cable 1. The fourth spacing z is varied in a targeted manner along the length of the first cable 1. For example, the fourth spacing z can be varied in a targeted and random manner within a fourth range of values along the length of the first cable 1. Alternatively, the fourth spacing z can also be varied in an algorithm specifically along the length of the first cable 1.

The fifth to eighth twisted pairs 51, 53, 55 and 57 have twist intervals w, x, y and z which are likewise varied in a targeted manner, since the second cable 44 has the same structure as the first cable 1. It should be noted that the twist intervals w, x, y and z for the twisted pairs 51, 53, 55, 57 employed in the second cable 44 are obviously the same randomness as the twisted pairs 3, 5, 7, 9 of the first cable 1 due to the randomness of the twist intervals. Alternatively, if the twist of the twisted pairs is set by an algorithm, it is obviously not possible to arrange a length of the second cable 44 having twisted pairs 51, 53, 55, 57 next to a length of the first cable 1 having twisted pairs 3, 5, 7, 9 with the same twist pattern.

Each twisted pair 3, 5, 7, 9, 51, 53, 55, 57 has a respective first, second, third and fourth average value within a respective first, second, third and fourth range of values. According to one embodiment, each of the first, second, third and fourth mean values of the twist intervals w, x, y, z is unique. For example, in one of many embodiments, the first average value of the first twist interval w is about 0.44; a second average value of the second twist interval x is about 0.41; a third mean value of the third twist interval y is about 0.59; the fourth mean value of the fourth interval of twist z is about 0.67. In one of many embodiments, the first, second, third and fourth ranges of values for the first, second, third and fourth twist intervals extend +/-0.05 from the mean of the respective ranges as summarized in the following table:

twisted pair numbering	Average strand length	Lower limit of twist length	Upper limit of the lay length
				3/51	0.440	0.390	0.490
5/53	0.410	0.360	0.460
				7/55	0.596	0.546	0.646
9/57	0.670	0.620	0.720

By purposefully varying the twist intervals w, x, y, z along the length of the cabling media 1, 44, the internal near-end crosstalk (NEXT) and the external near-end crosstalk (ANEXT) can be reduced to acceptable levels even at high data bit transmission rates exceeding that of the first cable 1.

Fig. 7-10 show ANEXT for a first cable 1 having twist intervals w, x, y, z, which are within the ranges summarized in the table above. To obtain the data of fig. 7, the output of the VNA is connected to twisted pair 51 of second cable 44, while the input of the VNA is connected to twisted pair 3 of first cable 1. The VNA is used to scan the band from 0.500MHz to 1000MHz in frequency and obtain the ratio of the signal strength detected on twisted pair 3 of first cable 1 to the signal strength applied to twisted pair 51 of second cable 44. This is ANEXT that twisted pair 51 in second cable 44 contributes to twisted pair 3 in first cable 1. The contribution of twisted pairs 53, 55 and 57 in second cable 44 to twisted pair 3 in first cable 1 is derived in the same manner. The sum of the strength of the contributions of twisted pairs 51, 53, 55 and 57 in the second cable 44 to twisted pair 3 in the first cable 1 is ANEXT contributed by all twisted pairs in the second cable 44 to twisted pair 3 in the first cable 1 and is shown on a logarithmic scale in fig. 7 as trace 30. Repeating the above process for the second, third and fourth twisted pairs 5, 7, 9 in the first cable 1 results in ANEXT traces 32, 34, 36 for the second, third and fourth twisted pairs 5, 7, 9 respectively due to the contributions of the twisted pairs 51, 53, 55 and 57 in the second cable 44 respectively.

The graphs of fig. 7-10 represent ANEXT for frequencies between 0.500MHz and 1000 MHz. Included in fig. 7-10 is a baseline 38 represented by a function 44.3-15 log (f/100) dB, where f is in MHz and is used as a reference upon which acceptable ANEXT performance can be obtained. Reference line 38 is also provided on the graphs of fig. 7-10, as compared to reference line F of fig. 2-5. As can be seen in fig. 7-10, ANEXT of the cabling media of the present invention exhibits a positive margin above the acceptable ANEXT size for accurate data transmission at the detected plurality of data transmission speeds. The reduction in crosstalk is relatively significant compared to the corresponding performance characteristics of the prior art cabling media shown in fig. 2-5.

The breakthrough of the invention is that it was found that by purposefully varying or adjusting the twist intervals w, x, y, z, the interference signal coupling between adjacent cables can be made random. In other words, it is assumed that the first signal is transmitted along one twisted pair from one end of the cable to the other, and that this twisted pair has a randomized or at least varying twist pattern. An adjacent second signal traveling along another twisted pair (within the same cable or within a different cable) is highly unlikely to travel any significant distance along the same or similar twist pattern as the first signal. Since two adjacent signals propagate within adjacent twisted pairs having different variable twist patterns, various interference couplings between the two adjacent twisted pair patterns may be greatly reduced.

It should be noted that the interference reduction effect of varying the twist pattern of the twisted pair can be combined with the tight twist spacing disclosed in the applicant's co-pending application entitled "TIGHTLY TWISTED WIRE PAIR ARRANGEMENT forceliner MEDIA" incorporated by reference above. In this case, the interference reduction effect of the present invention is enhanced even more. For example, the first, second, third and fourth mean values of the first, second, third and fourth twist intervals w, x, y, z may be set to 0.44, 0.32, 0.41 and 0.35, respectively.

The present invention determines at least one set of ranges for the variable twist intervals w, x, y, z, greatly improves external NEXT performance while maintaining the cable within standardized cable specifications and enables an overall economical and efficient manufacture of the cable connection medium. In the embodiment given above, the twist length of each of the four twisted pairs is purposefully varied by about +/-0.05 from the average of the twist lengths of the respective twisted pairs. Thus, each twist length is set to purposefully vary by about +/- (7 to 12)%, from the average of the twist length. It should be understood that this is only one embodiment of the invention. A greater or lesser number of twisted pairs (such as two twisted pairs, 25 twisted pairs, or 100 twisted pairs) may be included in the cable 1 within the scope of the present invention. In addition, the average value of the twist lengths of the twisted pairs may be set higher or lower. Additionally, the targeted variation in twist length may be set higher or lower (e.g., +/-0.15, +/-0.25, +/-0.5, even +/-1.0, or alternatively, the ratio of the targeted variation in twist length to the average twist length may be set to various ratios, such as 20%, 50%, or even 75%).

To date, it is believed that the twisted pairs 3, 5, 7, 9 inside the sleeve 2 must be fully shielded to achieve the desired reduction in external NEXT at higher data rate frequencies. Fully shielding the twisted pairs 3, 5, 7, 8 will result in an expensive cabling medium and will result in complex connections and installations. With the present invention, the casing 2 does not have to include a shield to reduce external NEXT. Thus, the cabling media of the present invention represents a significant improvement by producing cabling media with acceptable external NEXT response at a lower cost than previous designs.

Fig. 11 is a perspective view of a central portion of the first cable 1 of fig. 6, with the jacket 2 removed. Fig. 11 reveals that the first, second, third and fourth twisted pairs 3, 5, 7, 9 are twisted continuously around each other along the length of the first cable 1. The first, second, third and fourth twisted pairs 3, 5, 7, 9 are twisted about each other through 360 degrees in the length direction of the first cable 1 in accordance with a purposefully varied core strand length spacing v. According to a preferred embodiment, the core strand length spacing v has an average value of about 4.4 hours and is from 1.4 hours to 7.4 hours along the length of the cabling media. The change in core strand length may also be random or may change according to an algorithm.

The effect of twisting the twisted pairs 3, 5, 7, 9 around each other is to further reduce the external NEXT and improve the mechanical bending properties of the cable. As understood in the art, the alien NEXT represents the crosstalk induced between one twisted pair of a first cable connection medium (e.g., the first cable 1) and another twisted pair of a "different" cable connection medium (e.g., the second cable 44). Alien crosstalk becomes troublesome when multiple cabling media extend a large distance along a common path. For example, multiple cabling media are often run through a common conduit in a building.

By means of the invention, the core strand length spacing v is varied in a targeted manner in the direction of the length of the cable connection medium. The external NEXT is further reduced by varying the core strand length spacing v along the length of the cabling media, as will be explained below with reference to fig. 12-15.

The graphs shown in fig. 12-15 illustrate ANEXT performance of twisted pairs 3, 5, 7 and 9 in cable 1 of the present invention in which the twist lengths of twisted pairs 3, 5, 7, 9 are not purposefully varied, but the core strand lengths are purposefully varied between 1.4 and 7.4. In other words, as in the background art, the twisted pairs 3, 5, 7, 9 have fixed twist lengths of 0.440, 0.410, 0.596, and 0.670, respectively. However, in the related art, the core strand length is fixed to 4.4 in the longitudinal direction of the cable connection medium. By means of the invention, the length of the core strand is changed in a targeted manner in the length direction of the cable connection medium.

The ANEXT performance of the cable 1 constructed as described above should be compared with the performance of the cable of the background art shown in fig. 2 to 5. Specifically, traces t1 ', t 2', t3 'and t 4', which characterize twisted pairs 3, 5, 7 and 9, respectively, show a significant improvement in the reduction of ANEXT as compared to traces t1, t2, t3 and t4 of background art twisted pairs A, B, C and D, respectively. The significant improvement in ANEXT reduction is due to the targeted change in core strand length by the present invention.

The graphs shown in fig. 16-19 illustrate ANEXT performance of twisted pairs 3, 5, 7 and 9 in cable 1 of the present invention when the twist lengths of twisted pairs 3, 5, 7, 9 are varied in a targeted manner and the core strand lengths are varied in a targeted manner between 1.4 and 7.4. In other words, twisted pairs 3, 5, 7, 9 have twist lengths that vary purposefully with averages 0.440, 0.410, 0.596, and 0.670, as described in connection with fig. 7-10. In addition, the core strand length is set to vary in a targeted manner between 1.4 and 7.4.

The reduction in ANEXT of the cable 1 constructed as described above can be seen in the traces t1 ', t 2', t3 ', and t 4'. The traces t1 ", t 2", t3 "and t 4" should be compared with traces t1, t2, t3 and t4, which are characteristic of the background art cable E. It can be seen that the very significant improvement in the reduction of ANEXT is attributable to the combination of the two aspects of the invention. Specifically, ANEXT can be greatly reduced when the benefits of varying the length of the core strand along the length of the cabling media are combined with varying the twist length of the twisted pairs along the cabling media.

As described above, the cable connection medium constructed in accordance with the present invention exhibits a high level of resistance to external NEXT, becoming a cable connection medium having a faster data transmission rate and a reduced possibility of data transmission errors. It will be obvious that the same may be varied in many ways in accordance with the invention described. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.

Claims (38)

1. A cabling media, comprising:

a first twisted pair comprising first and second conductors, each conductor surrounded by an insulator, wherein the first and second conductors are twisted continuously around each other along the length of the cabling media, and wherein the first and second conductors are twisted 360 degrees around each other at varying first intervals along the length of the cabling media;

a second twisted pair comprising third and fourth conductors, each conductor surrounded by insulation, wherein the third and fourth conductors are twisted continuously around each other along the length of the cabling media and the third and fourth conductors are twisted fully 360 degrees around each other at varying second intervals along the length of the cabling media;

a third twisted pair comprising fifth and sixth conductors each surrounded by insulation, wherein the fifth and sixth conductors are twisted continuously around each other along the length of the cabling media, and the fifth and sixth conductors are twisted 360 degrees completely around each other at varying third intervals along the length of the cabling media;

a fourth twisted pair comprising seventh and eighth conductors each surrounded by insulation, wherein the seventh and eighth conductors are twisted continuously around each other along the length of the cabling media, and the seventh and eighth conductors are twisted 360 degrees completely around each other at a varying fourth interval along the length of the cabling media; wherein the content of the first and second substances,

the length of the first interval varies within a first range of values, the length of the second interval varies within a second range of values, the length of the third interval varies within a third range of values, and the length of the fourth interval varies within a fourth range of values;

the first range of values has a first average value, the second range of values has a second average value, the third range of values has a third average value, and the fourth range of values has a fourth average value; and is

The first average value is different from the second average value;

the first, second, third and fourth twisted pairs are twisted continuously about one another along the length of the cabling media, and the first, second, third and fourth twisted pairs are twisted 360 degrees about one another at varying fifth intervals along the length of the cabling media, and the length of the fifth intervals varies within a fifth range of values.

2. The cabling media according to claim 1, wherein the first range of values is different from the second, third and fourth ranges of values.

3. The cabling media according to claim 2, wherein the second range of values is different from the third and fourth ranges of values.

4. The cabling media according to claim 3, wherein the third range of values is different from the fourth range of values.

5. The cabling media according to claim 1, wherein the first average value is approximately 0.44 hours.

6. The cabling media of claim 5, wherein the second average value is approximately 0.41 hours.

7. The cabling media according to claim 6, wherein the third average value is approximately 0.59.

8. The cabling media of claim 7, wherein the fourth average is approximately 0.67 hours.

9. The cabling media according to claim 1, wherein the first range of values varies within +/-0.05 of a first mean of the first range of values.

10. The cabling media of claim 9, wherein the second range of values varies within +/-0.05 of a second mean of the second range of values; the third range of values varies within +/-0.05 from a third mean of the third range of values; the fourth range of values varies within +/-0.05 of a fourth mean of the fourth range of values.

11. The cabling media according to claim 1, wherein the first range of values is between 0.39 hours and 0.49 hours.

12. The cabling media of claim 11, wherein the second range of values is between 0.36 hours and 0.46 hours; said third range of values is between 0.54 hours and 0.64 hours; the fourth numerical range is between 0.62 hours and 0.72 hours.

13. The cabling media according to claim 1, wherein the fifth range of values has a fifth average value that is 4.4 hours.

14. The cabling media according to claim 1, wherein the fifth range of values varies within +/-3.0 of a fifth mean value that the fifth range of values has.

15. The cabling media according to claim 1, wherein the fifth range of values is between 1.4 hours and 7.4 hours.

16. The cabling media according to claim 1, wherein the first, second, third and fourth twisted pairs do not include respective shielding layers that shield them from one another.

17. The cabling media of claim 1, further comprising:

a jacket surrounding the first, second, third and fourth twisted pairs.

18. The cabling media of claim 17, wherein the first through eighth conductors are metal conductors including copper and are 24 AWG.

19. The cabling media of claim 1, wherein the cabling media meets the specifications of CAT 5, CAT 5e or CAT 6 cabling.

20. A method of manufacturing a cabling media comprising the steps of:

providing first and second wires, each wire surrounded by an insulator;

continuously twisting the first and second wires around each other to form a first twisted pair of a length, wherein the first and second wires are fully twisted 360 degrees around each other at varying first intervals along the length of the first twisted pair;

providing third and fourth wires, each wire being surrounded by a respective insulator;

continuously twisting the third and fourth conductors about each other to form a second twisted pair of a length, wherein the third and fourth conductors are fully twisted 360 degrees about each other at a varying second spacing along the length of the second twisted pair;

providing fifth and sixth wires, each wire being surrounded by an insulator;

continuously twisting the fifth and sixth conductors about each other to form a third twisted pair of a length, wherein the fifth and sixth conductors are fully twisted 360 degrees about each other at a varying third spacing along the length of the third twisted pair;

providing seventh and eighth conductors, each conductor surrounded by an insulator;

continuously twisting the seventh and eighth conductors about each other to form a fourth twisted pair of a length, wherein the seventh and eighth conductors are fully twisted 360 degrees about each other at a varying fourth interval along the length of the fourth twisted pair; the length of the first interval varies within a first range of values, the length of the second interval varies within a second range of values, the length of the third interval varies within a third range of values, and the length of the fourth interval varies within a fourth range of values; the first range of values has a first average value, the second range of values has a second average value, the third range of values has a third average value, and the fourth range of values has a fourth average value; and the first average value is different from the second average value; and

the first, second, third and fourth twisted pairs are twisted continuously about each other along the length of the cabling media, and the first, second, third and fourth twisted pairs are twisted 360 degrees about each other at varying fifth intervals along the length of the cabling media, and the length of the fifth intervals varies over a fifth range of values.

21. The method of claim 20, wherein the first range of values is different from the second, third, and fourth ranges of values.

22. The method of claim 21, wherein the second range of values is different from the third and fourth ranges of values, and the third range of values is different from the fourth range of values.

23. The method of claim 20, wherein the first average is 0.44.

24. The method of claim 23, wherein the second average value is 0.41, the third average value is 0.59, and the fourth average value is 0.67.

25. The method of claim 20, wherein the first range of values varies within +/-0.05 of a first mean of the first range of values.

26. The method of claim 25, wherein the second range of values varies within +/-0.05 of a second mean of the second range of values, the third range of values varies within +/-0.05 of a third mean of the third range of values, and the fourth range of values varies within +/-0.05 of a fourth mean of the fourth range of values.

27. The method of claim 20, wherein the first range of values is between 0.39 hours and 0.49 hours.

28. The method of claim 27, wherein the second range of values is between 0.36 hours and 0.46 hours, the third range of values is between 0.54 hours and 0.64 hours, and the fourth range of values is between 0.62 hours and 0.72 hours.

29. The method of claim 20, wherein the fifth range of values has a fifth average value of 4.4.

30. The method of claim 20, wherein the fifth range of values varies within +/-3.0 from a fifth mean of the fifth range of values.

31. The method of claim 20, wherein the fifth range of values is between 1.4 hours and 7.4 hours.

32. A cabling media, comprising:

a plurality of conductor pairs, each of said conductor pairs comprising two metallic conductors each surrounded by an insulator and twisted together in a twisting process along substantially the entire length of the cable medium; comprising a first twisted pair having a twist length varying at least +/-0.01 about a first average value along the length of the cabling media, a second twisted pair having a twist length varying at least +/-0.01 about a second average value along the length of the cabling media, a third twisted pair having a twist length varying at least +/-0.01 about a third average value along the length of the cabling media, and a fourth twisted pair having a twist length varying at least +/-0.01 about a fourth average value along the length of the cabling media;

a sleeve encapsulating the plurality of wire pairs, wherein the first average value is different from the second average value;

the multi-strand wire pairs are twisted together to form a core and the multi-strand wire pairs are twisted about each other a full 360 degrees at varying twist lengths along the length of the cabling media.

33. The cabling media of claim 32, wherein the twist length of the core varies by at least +/-0.01 along the length of the cabling media.

34. The cabling media of claim 32, wherein the cabling media meets the specifications of CAT 5, CAT 5e or CAT 6 cabling.

35. A cabling media, comprising:

a first twisted pair comprising first and second conductors, each conductor surrounded by an insulator, wherein the first and second conductors are twisted continuously around each other along the length of the cabling media, and the first and second conductors are twisted continuously 360 degrees around each other at varying first intervals along the length of the cabling media; and

a second twisted pair comprising third and fourth conductors, each conductor surrounded by insulation, wherein the third and fourth conductors are continuously twisted around each other along the length of the cabling media and the third and fourth conductors are continuously twisted 360 degrees around each other at varying second intervals along the length of the cabling media; the first and second twisted pairs are continuously twisted about each other along the length of the cabling media, and the first and second twisted pairs are fully twisted about each other 360 degrees at varying core strand intervals along the length of the cabling media, and the length of the core strand intervals varies over a range of core strand interval values.

36. The cabling media of claim 35, wherein the core strand spacing value range has a core strand average value of 4.4.

37. The cabling media of claim 35, wherein the core strand spacing ranges in value within +/-3.0 hours from a core strand average over the range of core strand spacing values.

38. The cabling media of claim 35, wherein the core strand spacing value ranges between 1.4 hours and 7.4 hours.