Abstract: When it is determined that a sample queue exceeds a first predefined level, samples being received from a IP switched network are modified such that samples are removed within the voiced region of the samples by removing whole pitch periods of samples. If the sample queue is below a second predefined number, additional samples are placed into the queue by analyzing voiced samples from the IP switched network and generating additional pitch periods of samples.

Abstract: A switching center for use in a communication network includes a pool of echo cancellation units for use in providing echo cancellation services to users associated with the switching center on an “as needed” basis. A communication connection being supported by the switching center is analyzed to determine whether intolerable reflections are being received from an associated trunk. If such reflections are detected, one of the echo cancellation units in the pool is assigned to the communication connection for use in reducing or eliminating the reflections. When the communication connection terminates, the echo cancellation unit is returned to the pool for subsequent use with another communication connection.

Abstract: A call center includes a message playback unit for playing back a prerecorded greeting during an outgoing call while a call classifier unit within the call center processes an audible signal received from a remote party location. A call processing unit places a call to a remote party location via a communication network to attempt to elicit a desired response from the remote party. The call classifier then processes an audible signal received from the remote party location to determine whether or not the call was answered by a live party. The prerecorded greeting is then played while the call classifier is simultaneously processing the audible signal. If the call classifier determines that the call was answered by a live party, the call processing unit completes a talk path between the remote party location and a local agent at the call center who handles the remainder of the call. The call processing unit will normally wait until the greeting has ended to complete the talk path.

Abstract: The subject invention is directed to a method and system for removing music or other unwanted noise from a conference call particularly when the music or other unwanted noise is not directly under the control of the telecommunication equipment the user is attached to and using. The method and system detects the unwanted sound, deactivates the sound source or disconnects from the line carrying the sound, monitors the disconnected line for voice energy, and reconnects the line when voice energy is detected. This capability provides the telecommunications equipment user with control over unwanted music sources being provided by equipment located either in the private or public networks.

Abstract: When an automatic call redirection operation is to be performed, a semantic process is used to determine semantic information being received back from the destination endpoint to which the call was directed. Advantageously, the semantic process will determine that the call has been redirected to a destination point which is no longer valid. Utilizing the semantic information received about the destination endpoint from a system to which the destination endpoint was connected, the semantic process extracts the new telephone number if it is present. This new telephone number is then utilized to update the database utilized by the automatic call redirection operation.

Abstract: When it is determined that a sample queue exceeds a first predefined level, samples being received from a IP switched network are modified such that samples are removed within the voiced region of the samples by removing whole pitch periods of samples. If the sample queue is below a second predefined number, additional samples are placed into the queue by analyzing voiced samples from the IP switched network and generating additional pitch periods of samples.

Abstract: Classifying a call to a called destination endpoint by a call classifier. The call classifier is responsive to information received from the called destination endpoint to perform the call classification.

Abstract: Classifying a call to a called destination endpoint by a call classifier. The call classifier is responsive to information received from the called destination endpoint to perform the call classification.

Abstract: Classifying a call to a called destination endpoint by a call classifier. The call classifier is responsive to information received from the called destination endpoint to perform the call classification.

Abstract: Classifying a call to a called destination endpoint by a call classifier. The call classifier is responsive to information received from the called destination endpoint to perform the call classification.

Abstract: A call center includes a recording/playback unit for recording audible signals received (during an outgoing call) from a remote party location, while a call classifier unit within the call center processes the audible signals. A call processing unit places a call to a remote party location via a communication network to attempt to elicit a desired response from the remote party. The call classifier then processes audible signals received from the remote party location to determine whether or not the call was answered by a live party. The audible signals are recorded by the recording/playback unit and are placed in a queue while the call classifier processes the audible signals. If the call classifier determines that the call was answered by a live party, the call processing unit completes a path between the recording/playback unit and a local agent at the call center, and the recorded audible signals from the remote party are played back to the agent in an accelerated fashion.

Abstract: In an asynchronous transfer mode (ATM) disassembler unit that is receiving ATM cells from an optical interface and converting data from these cells onto a constant bit rate (CBR) call, only a nominal predefined build out is defined for each optical interface. If an ATM cell is not received within the proper amount of time for the CBR call from the optical interface, the build out is automatically adjusted so that the build out is equal to the amount of delay that was experienced in receiving the next ATM cell for the call. Only the build out for the individual call that actually experienced the delay of the ATM cell is redefined. The other calls being handled by the optical interface are not effected by this automatic adjustment of the build out interval for the individual call. In addition, when an ATM cell is delayed for a particular call, the information that is transmitted for the call is the last PCM sample of the present ATM cell for that call.

Abstract: A silence-suppression scheme for a packet voice transmission system (FIG. 1) accurately regenerates the silence signals at the receiving end. The following discipline is implemented at the transmitting end (100): if speech is detected (200), transmit (204) a packet carrying the speech; if silence is detected (200) and the last-transmitted packet carried speech (202), transmit (204) a packet carrying the silence; if silence is detected (200) and the last-transmitted packet carried silence (202), transmit nothing. The following discipline is implemented at the receiving end (101): if a packet is received during a packet time interval (300), output (302) the contents of the packet; if a packet is not received during a packet time interval (300), output (306) again the contents of the last-received packet. Thus, while only one silence-carrying packet is transmitted, the receiver regenerates silence signals for the entire silence interval.

Abstract: In a distributed system, such as a PBX (FIG. 1), which uses a database for its operation, a master copy (22) of the database having a first format is stored at a central node (10) and cache copies (32) of database portions (24) but having a different format are stored at peripheral nodes (11-12). A change to the database is made to the master copy, is recorded in a change table (26) corresponding to the affected database portion, and is sent to affected peripheral nodes. At initialization, a boot copy (25) is made of each database portion by translating the database portion from the master database format to the cache copy format. Periodically thereafter, each boot copy is replaced with a new boot copy that reflects changes presently recorded in the corresponding change table. When the new boot copy is generated, the present change table contents are erased. When a peripheral node calls for a new cache copy (e.g.

Abstract: Administration of a communication system having a plurality of addressable communication ports is accomplished automatically, by the system itself. The system is initially provisioned only with unlinked terminal translations. Establishment of hardware translations and their linking to the terminal translations is accomplished by the system automatically, in response to initial calls from system users. Each one of these initial calls informs the system of the call-originating terminals's extension, and thereby specifies to the system the requisite information for linking the originating extension and terminal translation with the call's incoming port. Station moves are also accomplished automatically, through similar calls.

Abstract: The adjunct call processing arrangement of our invention eliminates the separation between hard-wired telephone switching system computer facilities and customer owned switchably connectable computer facilities. A general purpose communication interface is provided which connects the customer provided computer facilities to both the switching network and the hard-wired system processor of the telephone switching system via the standard telephone switching system port circuit. This general purpose communication interface enables a customer provided computer facility to provide additional call processing capability. In particular, the attendant services call processing subroutines and the directory assistance data base and software are provided on the computer facility. The telephone switching system routes all attendant-directed calls to a telephone station set associated with the computer and transmits call related data to the computer.