The core rulebook says how noise influences matrix actions that have a dicepool but not about actions that do not use a dicepool. E.g. when I want to make a call how much noise is necessary to block the call? Would noise from distance be taken into consideration especially with a long distance call?
Page 421 in my PDF of the Corebook:
If there is a Noise Rating from a situation that is greater than the item’s Device Rating, not including distance, the item temporarily loses its wireless functionality (see Noise, p. 230)
So yeah, your super-cheap R1 Commlink loses connection if you're just 5 meters into the bush, while an R6 Commlink holds steady two-and-a-half stories underground.