Camp-on busy signal

This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages) This article relies largely or entirely on a single source. Please help improve this article by introducing citations to additional sources. Find sources: "Camp-on busy signal" – news · newspapers · books · scholar · JSTOR (October 2025) (Learn how and when to remove this template message)

In telecommunications, the term camp-on busy signal has the following meanings:

• A signal that informs a busy telephone user that another call originator is waiting for a connection. Synonym: call waiting
• A teleprinter exchange facility signal that automatically causes a calling station to retry the call-receiver number after a given interval when the call-receiver teleprinter is occupied or the circuits are busy. Synonym: speed-up tone

0.00 (0 votes) Original source: https://en.wikipedia.org/wiki/Camp-on busy signal. Read more