Abstract: This invention relates to an arrangement for efficiently providing an up to date neighbor list for base stations serving a wireless cellular telecommunications call. The neighbor list is required by a mobile station measuring signal strengths of signals for surrounding base stations in order to locate base stations from which the mobile station can receive strong signals. When one base station receives a revised neighbor list from another base station, it receives a revised neighbor list from another base station, it receives a time stamp identifying when that revised neighbor list was created. Thereafter, when a request for data from a base station is transmitted, it is transmitted with that time stamp; no neighbor list is returned if the time stamp matches the time stamp stored with the neighbor list of the base station receiving the request.

Abstract: A method and apparatus for completing intra-data-network calls and calls between a public switched telephone network (PSTN) and a data network. For the case of an Internet data network, an Internet Phone Register is provided to identify the User Location Service (ULS) server that stores the temporary Internet Protocol Address (TIPA) of a called terminal. Advantageously, the TIPA of any called terminal can then be readily obtained by querying that ULS server.

Abstract: An apparatus and a method for allowing a user of a wireless station to screen incoming calls by presenting to the user a displayed text generated by a speech-to-text converter, the text corresponding to the initial portion of a message that the caller is leaving on the called party's voice mail system. Advantageously, the called party can screen calls, not only by caller identification, which may or may not be present, but also by the specifics of the message that the caller is planning to leave for the called party. Advantageously, using this arrangement, the caller need not know that the called customer could have answered the call, a disadvantage with arrangements such as call waiting, in which there is a brief exchange before a connection is either established, or not established, to the interrupting party.

Abstract: An arrangement for concentrating broadband data from a plurality of CPEs (customer premises equipments) for transmission over a link to an ATM network. Because each CPE can generate data at the full rate of the link, it is necessary to detect peaks of bursty traffic from a CPE user quickly and to limit the rate of data transmission whenever the capacity of the link may be exceeded. This is accomplished first by allowing the transmission of certain classes of traffic (lower priority) only when a token to permit transmission has been accumulated in the CPE, and second, by having a FIFO buffer for each user and detecting whenever the FIFO buffer has accumulated more than n cells; when this condition is detected, no more tokens are sent back to the user. The user is not allowed to accumulate more than m tokens. Advantageously, this arrangement allows essentially the full bandwidth of the link to the ATM network to be utilized by a timely throttling of bursts of traffic when they cannot be accommodated.

Abstract: Apparatus and a method for providing a caller with information about a called party. In one preferred embodiment, the information includes information concerning the charges to be incurred in making a call to the called party. Advantageously, in an environment wherein number portability allows a call which previously was a local call, to become a toll call because the called party has made a geographic move, without changing the called party's telephone number. For wireless service, in those cases in which the caller pays at least a part of the charges, and the charges for a call to a roamer are different if the roamer is locally found than if the roamer is remotely located, this service allows a caller to decide on whether to complete a call, and if the decision is made to complete a call, on what length call to aim for.

Abstract: An arrangement for permitting callers to make speed dialing calls away from their home telephone. A speed dialing list is maintained for those who subscribe to this service for a particular telephone line. When the caller who normally uses that line and makes use of his/her speed dialing feature from that line, and is away from his/her telephone, speed dialing service can be obtained if the call is a calling card, or credit/debit card telephone call. Such calls are routed initially to a switch for serving such calls. This switch then queries a calling card or credit card data base to obtain either a number corresponding to the caller's speed calling number, or to obtain an identification of the switch which contains that caller's speed dialing list. The caller is identified by his/her calling card, or credit/debit card number.

Abstract: A service provider accesses the customer premises equipment of an end user via a broad based data network such as the Internet. Security precautions are described for insuring that alias users cannot access the customer premises equipment. Advantageously, a service provider may provide service over a very wide area without incurring excessive telecommunications services charges. Advantageously, many service providers can readily access the customer premises equipment of a single end user.

Abstract: A method and apparatus for detecting silent faults in feeding diodes of redundant DC power supplies. The voltages on both sides of the feeding diodes are measured. Arrangements are then made to ensure that if corresponding feeding diodes are both operative, that current flows through a particular one of these diodes. The measurements of voltage under the various conditions will reveal any open or shorted feeding diodes. The voltage across a diode can be altered by heating the diode through the process of heating a power resistor that is in thermal contact with that diode. Alternatively, a controllable rectifier of a power source can be controlled to reduce the voltage of that power source, and thereby drive current through the diode connected to the other power source. Advantageously, this arrangement allows silent faults in these diodes to be detected without substantial risk of causing the failure in the powered system.

Abstract: An arrangement for providing voice dialing service to wireless subscribers when they are not being served by their home mobile switch, and service node. When a voice dialing request from a roamer is detected, the voice dialing data file of the roamer is requested by a broadcast message from the home service node of the roamer. The home service node responds to the broadcast request by transmitting the voice dialing data file to the requesting service node. The requesting service node retains the voice dialing data file as long as there are sufficiently frequent requests (e.g., once per day), for voice dialing service from the roamer. Advantageously, this arrangement allows voice dialing service to be provided to roamers as well as to mobile stations in their home area.

Abstract: A method of responding to overload in a real time control system. Overload is measured through the use of a control parameter such as the occupancy of a control processor or the number of entries in a queue of a module of the system. The overload indication is reduced to one of a plurality of levels. The levels corresponding to a longer term more serious overload are based on control parameter measurements over a longer period of time than the less serious short term overload levels. With autonomous control, each module of the system determines its own overload level and performs overload control actions corresponding to that level. In integrated system overload control, a centralized processor receives overload indications from each of the modules of the system and requests an appropriate overload control action of each module. Advantageously, these arrangements allow the system and its modules to respond to overload more rapidly and to return to normal operation more rapidly.

Abstract: Apparatus for permitting any of a plurality of driver circuits to control a select lead. In the preferred embodiment, the plurality of drivers are in separate peripheral component interconnect (PCI) host bridges. The drivers when active are in one of two low impedance states. A resistor whose impedance is substantially less than the high impedance of a driver when in the inactive state is connected to ground and pulls the voltage on the select lead toward ground when none of the drivers connected to the select lead are active. Advantageously, a plurality of drivers can control a single select lead, and only a short time is required as a guard interval between the time that two different drivers control the select lead.

Abstract: Apparatus and a method for setting up a telecommunications call, wherein more than one candidate terminating station is alerted, and a connection is established from a calling station to the first of the candidate terminating stations which answer an alert. In one preferred embodiment, an executive processor complex assigns ports and processes in a call processing complex. An incoming process is assigned for the port which receives the call, and the plurality of outgoing processes are assigned to ports for accessing candidate terminating stations. The incoming port process has a list of the outgoing terminating port processes for the incoming call, and each outgoing process stores the identity of the incoming process. When an outgoing process receives an answer indication, it communicates directly with the incoming process, bypassing any communications with the executive processor complex.

Abstract: Emergency service calls, such as 911 calls, are routed to specially trained operators at public service answering points (PSAPs). A PSAP switch, a special focus private branch exchange (PBX), is provided for interconnecting incoming PSAP calls to a PSAP position staffed by a PSAP operator. The PSAP position comprises a telephone facility for talking to the caller, and a PC for accessing and displaying data about the caller, i.e., the caller's address, and any special characteristics such as a caller's disability, etc. An ISDN, (Inte-grated Services Digital Network), line connects a tandem access switch used for routing PSAP calls with the PSAP switch. The ISDN facility is used for conveying information about the caller for display at the PC of the answering PSAP position. Advantageously, this arrangement provides an integrated system for communicating both the voice of the caller, and the data describing the caller to a PSAP operator.

Abstract: A method and apparatus for accessing customer telemetering equipment while on a voice connection between an agent of a customer server and the customer. A voice connection is initially established between a customer and an agent of a server such as a utility. The original connection may be established when a customer complains, or in response to receipt of a complaint report at an earlier time. If, during the discussion between the customer and an agent of the server, the agent believes that accessing the customer's telemetering equipment might help to uncover the problem, the agent signals a customer Telemetering Interface Gateway to allow the agent to access the appropriate telemetering equipment. After the agent has obtained information from this equipment, the agent sends another signal to the Gateway and the voice connection to the customer is re-established. Advantageously, problems can be discussed and solved while the customer is still connected to the agent, thus avoiding repeated telephone calls.

Abstract: Emergency service calls, such as 911 calls, are routed to specially trained operators at public service answering points (PSAPs). A PSAP switch, a special focus private branch exchange (PBX), is provided for interconnecting incoming PSAP calls to a PSAP position staffed by a PSAP operator. The PSAP position comprises a telephone facility for talking to the caller, and a PC for accessing and displaying data about the caller, i.e., the caller's address, and any special characteristics such as a caller's disability, etc. An ISDN, (Integrated Services Digital Network), line connects a tandem access switch used for routing PSAP calls with the PSAP switch. The ISDN facility is used for conveying information about the caller for display at the PC of the answering PSAP position. Advantageously, this arrangement provides an integrated system for communicating both the voice of the caller, and the data describing the caller to a PSAP operator.

Abstract: Arrangements for controlling a data switching network fabric and for synchronizing duplicate modules of such a fabric. A control complex, for determining new virtual connections to be established, and for disconnecting existing virtual connections, is connected through data links to the network fabric of a data switch. The network fabric has internal control processors. The control complex communicates with these processors by sending control packets over a dedicated internal ATM link and virtual connections to these internal processors to control their establishment and disconnection of user virtual connections. Duplicate modules of the data switching fabric receive identical packets and, when synchronized, transmit identical packets at the same time. The synchronization process is implemented by data links between the control processors of the duplicate fabrics to report progress on the step by step synchronization of internal queues.

Abstract: Arrangements for controlling a data switching network fabric and for synchronizing duplicate modules of such a fabric. A control complex, for determining new virtual connections to be established, and for disconnecting existing virtual connections, is connected through data links to the network fabric of a data switch. The network fabric has internal control processors. The control complex communicates with these processors by sending control packets over a dedicated internal ATM link and virtual connections to these internal processors to control their establishment and disconnection of user virtual connections. Duplicate modules of the data switching fabric receive identical packets and, when synchronized, transmit identical packets at the same time. The synchronization process is implemented by data links between the control processors of the duplicate fabrics to report progress on the step by step synchronization of internal queues.

Abstract: A bridge connection is made between interfaces on physically distinct telecommunication servers such that the two ends of the bridge can be used to connect existing calls that are terminated on each of the servers. To provide the bridge connection, a call using a standard outgoing T1 trunk on one of the servers is made through the public switched telephone network (PSTN) to an incoming T1 trunk on the other server. The servers reserve a special directory number for such calls. When a bridge connection is required one of the servers is queried for its special directory number. The other server is then instructed to make a call to that number. When the called server recognizes the incoming call as using its special number, it answers the call. The calling server then outpulses information needed by the called server to associate the bridge connection with the pending action. In this manner, calls terminating on distinct servers can be connected without the need for additional hardware.

Abstract: An electronically controlled main distributing frame (ECMDF) establishes main distributing frame (MDF) type connection in response to control signals without requiring a craftsperson to connect a jumper wire. In accordance with one application of such ECMDF, a local switch can receive signals from a customer requesting connection to a specials service provider such as the Internet. In response to the receipt of such signals, the connection in the ECMDF is altered to provide a more direct connection to the service provider bypassing the local switch. Advantageously, such an arrangement allows the long holding times of Internet connections to be established through a bypass network while allowing the customers who have requested such a connection to be provided with normal telephone service when they are not on the Internet.

Abstract: Apparatus for switching full-rate (e.g., 64 kilobit per second) signals and composite signals comprising a plurality of sub-rate signals (e.g., 32 kilobit per second sub-rate signal). The apparatus includes a unit for compressing selected ones of a plurality of full rate signals into a smaller plurality of full rate single and composite signals, and apparatus for expanding composite signals into full rate signals. Advantageously, during periods of heavy load, the switching network fabric of a switching system can carry more calls, and more traffic can be carried between switches equipped for sub-rate switching.