Want this question answered?
When metals (like the copper in the telephone wires) gets exposed to heat, they expand (thermal expansion) and when the get cooled they shrink. This directly implies that cables are longer in summer when it is hot. So telephone wires are longer in the summer.
The warmest/highest temperature something can get, or the warmest/highest temperature something can stand.
I'll take that as "How are telephone wires connected?" but it's still unclear what you want to know. Telephone wires are connected just as any other wires are connected. By screw connections, by soldering, by crimping.
Hawaii.
Atlantic
Equator.
The equator
Northern Hemisphere
Still around body temperature, I would think.
July is the warmest month on Mount Everest and the average temperature for the summit is -19 Celsius.
June, July and August are normally the warmest months
The answer is 15 degrees