Abstract:
A system is provided for the automatic detection of fraudulent activity on a transaction network, wherein each transaction has an associated identifier. The system includes voice comparison means (32) for comparing a first sampled voice of a user of a first transaction with a subsequently sampled voice of a user of a subsequent transaction having an identical identifier to that of the first transaction. Control means in the form of a fraud detection engine (26) is provided for determining, from said comparison, a profile of user usage that is representative of a total number of different users of the associated identifier. The fraud detection engine is configured to compare the profile of user usage with a threshold for fraudulent use, and to generate a fraud condition signal (40) in the event that the profile exceeds said threshold. If required, the fraud condition signal may be provided to automatically terminate the fraudulent transaction.
Abstract:
A system, method, and program for managing applications on remote communication devices (1-6), such as cellular telephones, on a wireless communications network (100). A server (112) on the wireless network (100) stores application threshold event data and manages communication device resident applications through device interaction, such as limiting access to server-side applications, updating the application, or recording the occurrence of the threshold event for other application uses.
Abstract:
Methods for dialing an emergency telephone number from a teleworking client according to the invention include detecting at the teleworking client when an emergency number is dialed, disconnecting the teleworking client from the PBX/MLTS, connecting the teleworking client to the PSTN, and dialing an associated stored number. The apparatus of the invention resides in software that is installed in off the shelf hardware. Though the invention is described with reference to a teleworking client, it may also be applied to any other dialup network connection.
Abstract:
ABSTRACT A method and system that utilize perceptual quality of service (QoS) metrics to determine whether to admit new calls onto a VoIP network is described. Perceptual QoS metrics are generated at a communications device, such as a telephone, that represent the measurement of perceptible variations in the quality level of a voice signal, or audio and video signal received at the communications device. A call admission threshold is generated from the perceptual QoS metrics for each node in the network that has communications devices attached thereto. When a request to admit a new call on the network through a node is received, the call admission threshold is compared with a priority value associated with the request to determine whether to admit the new call onto the network.
Abstract:
ABSTRACT A method and system that utilize perceptual quality of service (QoS) metrics to determine whether to admit new calls onto a VoIP network is described. Perceptual QoS metrics are generated at a communications device, such as a telephone, that represent the measurement of perceptible variations in the quality level of a voice signal, or audio and video signal received at the communications device. A call admission threshold is generated from the perceptual QoS metrics for each node in the network that has communications devices attached thereto. When a request to admit a new call on the network through a node is received, the call admission threshold is compared with a priority value associated with the request to determine whether to admit the new call onto the network.
Abstract:
A test procedure for a VDSL distribution loop utilizes loop prequalification based on information stored in a network database (100) in combination with field tests that are performed to confirm minimum performance capabilities of prequalified loops. During qualification, a VDSL test signal is sent on the loop, and SNR and bit error ratios are measured for desired upstream and downstream transmission rates. These measurements are compared (132) to threshold values to verify performance of the loop for VDSL use. Thus, a cost effective test process is provided which allows accurate test data collection for sensitive VDSL distribution loops without the need for any pre-provisioning of the loop, and to allow for validation of the loop configuration database (136).
Abstract:
In a communications network, a count (82) is maintained of the number of calls made to a selected number. The number may be that of an answering centre (6) or of any other destination which has the capacity to handle a multiplity of calls simultaneously. The count is automatically updated when calls are admitted to the number and when they are terminated. If a new call would take the number of calls in progress above a stored value for the maximum capacity of the number, then the call is rejected. In one implementation, resources are allocated dynamically on an Overload Control Server (66) to a particular destination number only when congestion occurs. The stored value for the capacity may be amended automatically depending on the response of the network to admitted calls. The value for the capacity may initially be estimated as a function of the holding times for calls to the destination number.
Abstract in simplified Chinese:本发明系关于通信系统以及在阻塞的通信信道中维持音频通信之方法,阻塞的通信信道目前承受发送方与接收方之间音频通信中的语音发送,通信信道具有至少一传讯信道以及至少一具有服务品质之酬载信道。酬载信道之服务品质在音频通信期间遭到监测。若酬载信道之服务品质低于阈值,则将各自发送方之语音转换成文本;并且透过保留之通信信道予以发送至各自接收方。可于接收方将文本转换回语音。
Abstract in simplified Chinese:本发明公开了一种用户身份验证方法、系统及验证码生成维护子系统,为登录应用系统的用户生成用户身份验证码,由通信交换机将用户身份验证码作为主叫号码,调用用户的能显示主叫号码信息的通信终端;应用系统获取用户输入的显示在通信终端上的主叫号码,并与生成的用户身份验证码进行比较,进行用户身份验证。避免了现有基于短信和电话语音的身份验证方式中可能出现的因短信丢失或延迟,以及电话语音接收准确性差、成本较高而造成因特网应用系统的身份验证无法正常实施及广泛应用的问题,提高了对用户进行身份验证的可靠性及工作效率。