local (tele)communication platform

https://paginas.fe.up.pt/~acbrito/laudon/ch6/chpt6-2fulltext...
Telecommunications platforms are typically provided by telecommunications/telephone services companies that offer voice and data connectivity, wide area networking, and Internet access.

Poss.option: network
https://www.nfon.com/en/get-started/cloud-telephony/lexicon/...
Typical examples of telecommunication networks are the telephone landline network, the mobile network, cable TV networks or the internet.