For example, what about this: https://www.amazon.com/C019-Telephone-Network-Lineman-Connectors/dp/B01DIPY1T4/ref=sr_1_17_sspa?crid=2F759OTIEQCCM&keywords=butt+set+phone+tester&qid=1660692179&sprefix=Butt+set%2Caps%2C2120&sr=8-17-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEyVTk0SjZEMk1aNklWJmVuY3J5cHRlZElkPUEwOTYxMzk3MUdVRUFWRTBNNVc3MiZlbmNyeXB0ZWRBZElkPUEwMTkyMzI5MllRNUoyVEdKN05RWiZ3aWRnZXROYW1lPXNwX210ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=