Answer: telexing

AnswerCrossword Clue
TELEXINGE-Mailing predecessor
telexingteletypewriter used to send or receive on such a service
telexingto send (a message) by telex
telexingtwo-way teletypewriter service channeled through a public telecommunications system for instantaneous, direct communication between subscribers at remote locations
telexingTELEX, to send a message by a type of telegraphic system
telexingmessage transmitted by telex
telexingto send a message by telex to