Systems and methods performed by an IP telephony system allow a user to request that his IP telephony device be set into a conference calling mode for an indefinite period of time. When the user's IP telephony device is in the conference calling mode, all parties that attempt to call the user's IP telephony device are added to a conference bridge tied to the user's IP telephony device. All incoming calls are treated in this fashion until the user cancels the conference calling mode and returns to a normal calling mode.

Provided is a method, a system, an apparatus, and/or a non-transitory computer readable medium for providing a ringback tone and a ringtone using a Voice over Internet Protocol (VoIP) call service. A call method may provide sound sources directly edited by users as a ringtone or a ringback tone in a VoIP call service.

A system and method for processing a plurality of channels, for example audio channels, in parallel is provided. For example, a plurality of telephony channels are processed in order to detect and respond to call progress tones. The channels may be processed according to a common transform algorithm. Advantageously, a massively parallel architecture is employed, in which operations on many channels are synchronized, to achieve a high efficiency parallel processing environment. The parallel processor may be situated on a data bus, separate from a main general-purpose processor, or integrated with the processor in a common board or integrated device. All, or a portion of a speech processing algorithm may also be performed in a massively parallel manner.

Apparatus and methods concerning call routing are disclosed. As an example, one apparatus includes an interface circuit configured to route calls, as data communications, between a cellular network or PSTN and a plurality of communication devices on an IP network. In response to receiving a first call notification from one of a plurality of mobile devices, a processing circuit of the apparatus caches the call notification for a period of time in a first database. A first call notification indicates a source number and a destination number. In response to a first incoming call via the cellular or PSTN network from the source number included in the cached call notification, the processing circuit redirects the call to the destination number indicated in the call notification via the cellular or PSTN network.

A system and method for processing a plurality of channels, for example audio channels, in parallel is provided. For example, a plurality of telephony channels are processed in order to detect and respond to call progress tones. The channels may be processed according to a common transform algorithm. Advantageously, a massively parallel architecture is employed, in which operations on many channels are synchronized, to achieve a high efficiency parallel processing environment. The parallel processor may be situated on a data bus, separate from a main general purpose processor, or integrated with the processor in a common board or integrated device. All, or a portion of a speech processing algorithm may also be performed in a massively parallel manner.

Provided is a method, a system, an apparatus, and/or a non-transitory computer readable medium for providing a ringback tone and a ringtone using a Voice over Internet Protocol (VoIP) call service. A call method may provide sound sources directly edited by users as a ringtone or a ringback tone in a VoIP call service.

An exemplary VoIP service provides call participants cues to indicate that an enhanced service is being employed. When calling, the standard dial tone may be replaced with a distinctive dial tone or sound that indicates to the call participant that enhanced service is active (e.g., a service active sound). In some embodiments, the person called by the VoIP user hears a viral sound that indicates that an enhanced telephone service is being used. Furthermore, communication audio cues may be provided during the communication to provide further information to the call participants.

A method, a device and a storage medium for processing a communication service in a circuit switch domain are provided. The method may include: judging, when a communication service being currently processed by a communication terminal is a voice call service or a short message service in a circuit switch domain, whether a switching condition for switching the communication service onto a real-time communication tool in a packet switch domain of the communication terminal is met; if it is met, switching the communication service onto the real-time communication tool in the packet switch domain of the communication terminal.

A telephone call to a remote party may encounter a number of abnormal conditions, which prevents the call from being offered to the remote party's interface. These conditions may be indicated to the calling party using call progress information conveyed as out-of-band information, in the form of signaling elements and/or as in-band information, in the form of audio information. The audio information may include a special information tone and/or an intercept announcement. The call handler originating the outbound call may provide the audio information to a speech analytics component that analyzes the audio information. The analyzed audio information may be reconciled with the out-of-band information. Various rules can be applied to ascertain how to disposition the call in instances where the in-band and out-of-information are inconsistent. Once reconciled, accurate call disposition information can be recorded in the call record for that call.

Systems and methods performed by an IP telephony system allow a user to request that his IP telephony device be set into a conference calling mode for an indefinite period of time. When the user's IP telephony device is in the conference calling mode, all parties that attempt to call the user's IP telephony device are added to a conference bridge tied to the user's IP telephony device. All incoming calls are treated in this fashion until the user cancels the conference calling mode and returns to a normal calling mode.