It is proper Netiquette for the caller to call back if disconnected. Do call back if disconnected when you placed the call.
Published on May 16, 2015 | 0:31 Seconds | Science and Technology
VoIP calls drop if an internet connection is lost. An intermittent connection can cause a caller to hang up on someone accidentally. If the caller and the recipient both call each other back the calls go to voice mail.
Published on May 10, 2013 | 1:07 Minutes | Science and Technology
The person who made the call is supposed to call back if disconnected because they initiated the call. The person who received the call is supposed to wait for the caller to return the call.
The caller is to call back if disconnected because the connection was initiated by them.