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RG-5400 Subscriber router
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APPENDIX А. CALCULATION OF PHONE LINE LENGTH
Table —Electrical resistance/cable type relationship for 1km of DC subscriber cable lines at 20°С ambient
temperature.
Cable grade for subscriber
lines of local exchange
network
Core diameter,
mm
Electrical
resistance
of 1km circuit, Ω,
max.
Line length
(other phone
units), km
Line length
('Rus' phone
units), km
TPP, TPPep, TPPZ, TPPepZ,
TPPB,TPPepB, TPPZB, TPPBG,
TPPepBG, TPPBbShp,
TPPepBbShp, TPPZBbShp,
TPPZepBbShp, TPPt
0,32
458,0
3,537
1,528
0,40
296,0
5,473
2,365
0,50
192,0
8,438
3,646
0,64
116,0
13,966
6,034
0,70
96,0
16,875
7,292
TPV, TPZBG
0,32
458,0
3,537
1,528
0,40
296,0
5,473
2,365
0,50
192,0
8,438
3,646
0,64
116,0
13,966
6,034
0,70
96,0
16,875
7,292
TG, TB, TBG, TK
0,40
296,0
5,473
2,365
0,50
192,0
8,438
3,646
0,64
116,0
13,966
6,034
0,70
96,0
16,875
7,292
TStShp, TAShp
0,50
192,0
8,438
3,646
0,70
96,0
16,875
7,292
TSV
0,40
296,0
5,473
2,365
0,50
192,0
8,438
3,646
KSPZP
0,64
116,0
13,966
6,034
KSPP, KSPZP, KSPPB,
KSPZPB, KSPPt, KSPZPt,
KSPZPK
0,90
56,8
28,521
12,324