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Asterisk is a software implementation of a private branch exchange (PBX). In conjunction with suitable telephony hardware interfaces and network applications, Asterisk is used to establish and control telephone calls between telecommunication endpoints such as customary telephone sets, destinations on the public switched telephone network (PSTN) and devices or services on voice over Internet ...
Activate call forwarding on busy *69 1169 Last-call return (incoming) *69 HFC *10# [7] [8] 1361 1363 [9] 1471 [10] *70 1170 Call waiting disable *71 1171 Usage sensitive three-way call *72 1172 Unconditional forward: All calls *73 1173 Call forward: Cancel *74 1174 Speed calling (8 numbers) *75 1175 Speed calling (30 numbers) *77 1177
The protocol does not actually carry any calls, but rather provides addressing information. Peers in a DUNDi cluster query other peers for a telephone number to which a call is requested by a user. The result of the query is a dial string for the Asterisk application Dial. The protocol was invented by Mark Spencer, the author of Asterisk.
In early cell phones, or feature phones, the letters on the keys are used for text entry tasks such as text messaging, entering names in the phone book, and browsing the web. To compensate for the smaller number of keys, phones used multi-tap and later predictive text processing to speed up the process.
Call again, a form of automatic ring back, allows a caller, on reaching a busy signal, to hang up, dial a special code, and be called back automatically when the called number is no longer busy, usually with a limit of 30 minutes. Call return allows a customer to dial a code that identifies the last incoming call. On some types of central ...
FreePBX is a web-based open-source graphical user interface (GUI) that manages Asterisk, a voice over IP (VoIP) and telephony server. [2]FreePBX is licensed under the GNU General Public License version 3, [3] with commercial modules available under their own licenses.
AST SpaceMobile made history in April 2023 by completing the first two-way phone call via space on an unmodified cell phone. This milestone was achieved using its low Earth orbit satellite, Blue ...
Inter-Asterisk eXchange (IAX) is a communications protocol native to the Asterisk private branch exchange (PBX) software, and is supported by a few other softswitches, PBX systems, and softphones. It is used for transporting voice over IP telephony sessions between servers and to terminal devices.