Chat line
Chat line is a services allowing for people to communicate with one another by telephone call. However, more recent chat lines are similar to CB radio in which a number of people both listen and speak together. See also
 Instant messaging
 Online chat
 Chat room
 Beep line
 Party line (telephony)
 Synchronous conferencing
 Videotelephony

References

Calling features
Local loop
Smartphones
Technology in society