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Dialing *70 can prevent the call from completing when the phone line does not have the call waiting feature active. Leave this option unchecked if you are no longer able to connect. 3. Check or uncheck, “I have to dial this number to reach an outside line” depending on your telephone line. Normally, this should not be selected.
In telecommunications, an automatic callback is a computer telephony calling feature that permits a user, when encountering a busy condition or other condition where the called individual is unavailable, to instruct the system to retain the called number and to establish the call when there is an available line or when the called number is no longer busy.
An otherwise unspecified busy signal indicates that the called number is occupied: The called number is talking with another caller on the phone; The number is calling out; Someone else has called the number or is calling the number at the same time; The other line was left off-hook; It is otherwise unavailable
Continuous redial, busy number redial, or repeat dial [1] is a vertical service code (calling feature) that allows callers to automatically redial a busy telephone number until a connection is made. It was introduced in 1992 as Repeat Dialing, [ 1 ] and is activated by dialing a combination of special characters and numbers after hanging up ...
A third number call or third party call is an operator assisted telephone call that can be billed to the party other than the calling and called party. The operator calls the third number for the party to accept the charges before the call can proceed. Time and charges was a service that could be requested of an operator before a call began ...
Calling party control (CPC), or forward disconnect, is a telecommunication signal sent from a central office to the telephone subscriber's equipment to indicate that the calling party has hung up. This indicates that answering machines should stop recording, notifies conference call bridges that a participant has left or removes an abandoned ...
In many cases, when calling from abroad, busy, reorder and other call failure tones may be played by the local switch. Modern signalling protocols like SS7 send this information digitally; thus only a ringback tone or announcement generated by a distant switch in a foreign network will ever be heard by callers from other countries or networks.
Call trace (Malicious caller identification) *60 1160 Call blocking *61 1161 Priority call *62 1162 Selective call waiting *63 1163 Selective call forwarding *65 1165 Calling number delivery activation *66 1166 Continuous redial *67 1167 Calling number delivery blocking 1831 #31# [4] [5] 141 #31# [6] *68 1168 Activate call forwarding on busy ...