31results about "ISDN systems" patented technology

An adaptive telecommunications system for transporting communication traffic over a network comprising a means for transmitting communication traffic between a plurality of devices through a network, monitoring the communication traffic between the plurality of devices, and a adaptively changing the mode of operation either before and/or during a call, based on at least one of instantaneous network changes, connection type characteristics, and type of communication traffic. The devices attached to the network may consist of, for example, a fax machine, phone, mobile phone, public branch network exchange, a computer, or a switch. The traffic traveling across the system, voice, fax, or data, for example, may be compressed and/or restricted based on the type of traffic. The system may fully replace the existing PSTN circuits or may be used for overflow when the existing PSTN circuits are at near or full capacity.

In switching centers serving multiple local access providers, a problem arises in detecting cable failure and identifying the provider of the failed cable connected between the switching center and remote terminals. A test circuit installed in each cable port of the switching center detects failed cables; identifies the operator of the failed cable, and designates the cable end at which the failure occurs. The test circuit includes a signal detector and a signal generator and monitor connected through a switching device to the cables. A data signal Ds is transmitted on the cables. When the detector recognizes a loss of a data signal Ds exceeding a threshold a failed cable has occurred at one end of the cable or the other. The switch is activated by the signal loss to connect the signal generator and monitor to determine at which cable end the cable has failed. A reference signal Rs is injected into a cable by the signal generator and monitor. If the data signal Ds on the failed cable matches the reference signal Rs in amplitude and phase, a cable failure is indicated at the near end of the cable detector. If the data signal Ds is degraded in amplitude and shifted in phase relative to the reference signal Rs, a cable failure is indicated at the far end of the cable.

The monitor is for monitoring the status of a first client telephone, and for sending this status information via a central server to an authorized second client telephone. The central server stores a database of registered client telephones and corresponding client telephones that the client may monitor. A user of a registered client telephone monitors in real time the telephone status of registered friends, family, or co-workers that have agreed to be monitored by the user.

A system and method allow PBX features to be extended through the public network. A teleworker calls into a PBX system and is assigned a fictitious port. The fictitious port is controlled by a telework server and appears to the PBX to be a local device. PBX features are invoked by particular sequences of DTMF tones or by voice prompt, or another data input system.

An alarm generation tool that operates within a Voice over IP (VoIP) network environment to generate alarms based on ISDN disconnect cause codes. The tool examines call-specific usage records associated with VoIP traffic to detect ISDN disconnect cause codes and determines failure rate information from failure-type disconnect cause codes among the ISDN disconnect cause codes on a per-gateway basis. The tool generates alarms when the failure rate information, such as failure rates and/or counts, exceeds defined thresholds.

A system and method directed to providing a broadcast/multicast in a circuit-switched network. An exemplary method includes receiving at a first switch a call directed to a called number; determining whether the first switch has an active connection to the called number; if the first switch has an active connection to the called number, merging the call with the active connection; and if the first switch does not have an active connection to the called number, routing the call to a next switch. The process is repeated as necessary until a next switch with an active connection is identified and/or the switch serving the called number is reached. The present invention conserves network resources and increases network efficiency, in part, by not carrying a call any further than is necessary for the caller to participate in a broadcast/multicast.

A system for using an under-utilized data channel for carrying additional data, in a network mode. One such channel is the D-channel in the ISDN system. In one implementation, a group of telephone call centers share data, using the D-channel, about the lengths of time incoming callers must wait before being answered. Using the shared data, the call centers collectively route incoming calls to call centers having smaller waiting times.

A method for signaling connection setup emanating from a calling terminal (TLNA) via a communications network to a called terminal (TLNB), where at least one access connection routed to the called terminal is busy, characterized in that, if there is no authorization for such singaling for the relevant called terminal (TLNB), signaling which indicates said connection setup is prompted for the called terminal (TLNB) in the case of the calling terminal (TLNA) or is initiated by the originating exchange (VSTA) in the communications network, in that this originating exchange (VSTA) stores appropriate signaling authorization for the relevant calling terminal (TLNA), and in that the calling terminal (TLNA) or the originating exchange (VSTA) has received a message indicating the busy condition of the at least one access connection routed to the called terminal (TLNB).

Various embodiments of the invention provide methods, systems, and computer program products for handling an audio path failure and/or non-conformant QoS for a call between a contact center agent and remote party. Specifically, an audio path is established to a first telephony device being used by the agent and a call is bridged onto the audio path so that audio can be streamed back-and-forth between the first telephony device and a second telephony device being used by the party. Accordingly, various embodiments of the invention involve monitoring the audio path to detect an audio path failure and/or non-conformant QoS for the audio and bridging the call onto a second audio path when a failure or non-conformant QoS is detected so that the call is not disconnected from the second telephony device and a third device (e.g., IVR) can stream audio over the second audio path to the second telephony device.

A method and apparatus in a computer network system form a setup message at a source terminal. The setup message includes a 1xN extension message that identifies N different destination facilities, as identified by an operator, to which a data message is to be sent. The source terminal relays the setup message to a 1xN switch, where the 1xN switch invokes a 1xN extension mechanism that coordinates the establishment of communication links with the N different destination facilities identified in the setup message. For the destination facilities that have at least one communication link available thereto, the 1xN extension mechanism sends the data message to the available destination facilities at the same time.

Disclosed are call processing methods which are performed by a network terminator located at a subscriber's premise. The network terminator is coupled to a digital network and a communication device at the subscriber's premise and can perform call waiting, caller identification, call conferencing without intervention from a telco's switching system that requires an additional charge to the subscriber for these services. In addition, the network terminator can perform a method which allows two digital communication devices coupled to one S-bus to share a communication session. In another embodiment, up to a six way conference call can be established with an analog telephone coupled to an ISDN network via the network terminator of the present invention.

At least one part of at least two user connections (TA1 . . . 6) having configured performance criteria and being allocated to at least two network devices (LE1 . . . 3) is assigned to at least one group (NWHG), to which group-specific performance criteria and/or characteristics (PDN, HUNT) can be allocated. The group (NWHG) is controlled by one of the network devices (LE1), whereby the user connections (TA1, 3, 4, 6) which have not been physically allocated to this network device (LE1) are allocated to said device as virtual user connections.

A remote user will set up a telecommunication from some remote terminal to some remote access server through a telephone network. Such telephone network will provide calling line identity information of said remote terminal to said remote access server while this first telecommunications being identified by said remote access server as being performed by a remote worker. The remote access server will then acknowledge said telecommunications by rejecting it with some tag. The remote access server will also register the received calling line identity information to which it will associate said forwarded tag. After a complete disconnection of the telecommunications, the remote terminal will initiate an Internet protocol session to said remote access server using the received tag. The remote access server will then be able to identify said remote terminal while the identification procedure be based on the use of the registered calling line identity affected to said tag.

A PBX switch incorporates methods and apparatus for automatically configuring Call Appearance values in an ISDN BRI. The methods and apparatus include providing means for one PDN to call the other PDN in the same BRI, recording the Call Appearance data for the first call, placing the first call on hold and calling the same number again, recording the Call Appearance data for the second call, and repeating the process until all Call Appearance values have been recorded. According to the invention, the process is repeated for both PDNs in each BRI coupled to the PBX switch.

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.

A method and appartus are provided for identifying a call record by a source automatic call distributor (11A) to a host computer (12) of a telephone call received from a public switched telephone network (PSTN) (16) and overflowed from the source automatic call distributor (11A) to a destination automatic call distributor (11B, 11C) in a call distribution system (10) using telescripted call control. The call record is stored under a call identifier of the source automatic call distributor (11A) in a memory (28) of the host computer (12).

A method is provided for reserving trunks on a trunk group for designated class of service calls. The trunks available for a denominated class of service is specified, and the trunks remaining are enumerated and designated as of no class and available for all calls. When the no class trunks are in use and a new call is a denominated class of service, it is allocated to a trunk and the trunks available is reduced accordingly. If the no class trunks are in use and a new call is not of a denominated class of service, the new call is allocated to a further trunk group. When a call is released and the number available is reduced below a specified number, the number of available trunks increases. If the number of trunks available is not reduced below a specified number, the released trunk is made available for all calls.

The invention relates to the locating of a faulty link section (2, 3, 4) of an active long-term connection. The long-term connection is interrupted and a testing device (5) is activated at the point of interruption (6), or if the testing device is external, it is connected in. Mirroring devices (17), which send back incoming signals unchanged, are then progressively activated, starting from a point in the long-term connection a distance away from the point of interruption (6) and progressing in the direction of the point of interruption (6), until the faulty link section (2, 3, 4) of the long-term connection has been found. The testing device (5) transmits a test signal to the activated mirroring device (17) respectively and evaluates the mirrored signal for faults.