Telecommunication Services cover other communication offerings such as fax, telex, messaging gateways and similar services that run over telecom infrastructure but do not fall into a narrow category like fixed line or mobile.
SAC 998419 is used when the main work relates to other telecommunication services including fax and related communication It is meant for telecom assignments where the provider is responsible for connectivity, capacity, uptime and agreed service levels.
In practical terms, plans under this SAC often include areas like fax services, business communication services. Using SAC 998419 in such cases keeps the service description and GST classification aligned with how the connection is actually used.