When it comes to "link-attached terminal," there are several synonyms that might come in handy. A "terminal node controller (TNC)" is one such term used for link-attached terminals in radio communication. "Data terminal equipment (DTE)" and "data circuit-terminating equipment (DCE)" are other synonyms widely used in telecommunication industry. If we talk specifically about computer networks, "network interface card (NIC)" and "communication interface" can be alternate terms while "modem" can be used for dial-up connections. Another synonym for a link-attached terminal in the context of video and audio signal transmission is a "converter box." Depending on the usage and context, different synonyms for link-attached terminals can be used to convey the intended meaning.