backbone connections

[Shmuel]

Hello all, again.

Backbone, in Spanish?
Sample sentences, taken from a Compliance Table:

"The backbone connections between the Base Stations and the C2 should be further defined by XXXX"

"IP connection to backbone"​

Espina dorsal / eje troncal / eje central ?

Any other better suggestion?
TIA.

 

[VENOM69]

is "Espalda"

 

[Lnx]

red troncal, esqueleto de red, columna vertebral, comunicación central, espina dorsal

 

[Shmuel]

Muchas Gracias!!