Page 1070 - 5G Basics - Core Network Aspects

2 Transport aspects

I.2.4 Wire types

NOTE – The high-frequency crosstalk environment is currently not properly specified. The crosstalk coupling functions,
including their dependence at high frequencies on length, frequency and number of disturbers, is for further study.

Table I.4 – Wire types

Short Type Reference
name

A26u 26 AWG twisted buried distribution cable (gel filled PIC)
A26j 26 AWG twisted loose jumper wire
A22b 22 AWG twisted buried drop wire with metal sleeve (BSW-2-22, has 2 pairs)
CAT3 24 AWG CAT-3
CAT5 24 AWG CAT-5 Clause I.2.4.1
B05a 0.5 mm 2-pair unshielded aerial Clause I.2.4.1
B05b 0.5 mm 2-pair unshielded aerial
B05du 0.5 mm 2-pair unshielded aerial Multipair unshielded underground
T05a Four-pair shielded indoor
T05b In-building cable: Multiquad shielded Clause I.2.4.1

T05h In-house cable: Two or more pairs of unshielded, untwisted wires Clause I.2.4.1
T05u Multiquad shielded underground Clause I.2.4.1
B08a One-pair unshielded aerial
B05cw Two or more pairs of unshielded untwisted wires. Common in premises cabling in
UK. Active connection uses 3 wires with capacitive coupling between two.

I.2.4.1 Cable model for wiring types B05a (CAD55), CAT5, T05u, T05b and T05h

The parameterized model for the wire types CAT5, T05u, T05b and T05h is defined in Table I.5. The
parameter values for these wire types are defined in Table I.6.

Table I.5 – Parameterized model for wire types B05a
(CAD55), CAT5, T05u, T05b and T05h

[Zs, Yp] = Model (Z0, ηVF, Rs0, qL, qH, qc, qx, qy, , fd)
  j  q  j / q    
2

2
2
Z ( j )  j  L  R  1  q  q  sqrt  q  q  2    2 s s y      



s
x
s0
s
s
x
s
   s  q / q  j / s q  y   
s
x
 j  2  /

Y ( j )  j  C   1 q c    1    j  C  q c

p0
p
p0
  d 
1
L s   c   Z 0  c0 = 3·10 [m/s]
8
VF
1 0 1
C p0   VF c  0  Z 0  0 = 4·10 [H/m].
-7
q  1
s
q 2 H q  L

2
2
s0
 s  q  s0  q   4  R   
H 
H
  0 
 d  2  f  d

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