Abstract: Soot induced kinematic viscosity increase of lubricating oil compositions for diesel engines equipped with EGR systems can be ameliorated by selection of viscosity modifier, lubricating oil flow improvers, detergents and/or dispersants.

Abstract: A distributed voice processing system comprises two or more voice processing machines 50A, 50B, connected by an isochronous network. In the preferred embodiment this network comprises an ATM switch 80 and appropriate ATM links 82A, 82B. Each of the voice processing machines includes telephone line interface units 52 connected to the telephone network 5 via respective telephony channels 15, a TDM bus 54, voice resources 55 (such as voice recognition, voice response functionality, etc), and an ATM adapter 58 to allow communications over the ATM network. In operation, a call may be received at the line interface unit at a first voice processing machine, and placed onto a TDM bus at that machine. The call is then taken off the TDM bus by the ATM adapter, and routed over the ATM network to the ATM adapter at a second machine, which places the call on the TDM bus at this second machine.

Abstract: A voice processing system comprising a digital trunk processor 135 and a system unit 145 incorporates a local voice recognition resource 185 provided on a digital signal processing board 180, and can access a remote voice recognition resource 320 in a server 300 via a local area network 250. The system provides a barge-in facility for the recognition resource on the remote server, whereby a prompt is played out to the user, and the incoming telephony signal is fed into a voice activity detector on the digital trunk processor. Responsive to a detection of incoming voice activity, the outgoing prompt is terminated, and the incoming data is transferred over the local area network to the remote server for recognition.

Abstract: A voice processing system is attached to a switch via an ATM link, the switch being in turn attached to the telephone network. The voice processing system handles incoming or outgoing calls transmitted over the ATM link, which supports a plurality of virtual connections. The voice processing system includes a time division multiplex (TDM) bus having multiple timeslots, and an adapter card for attachment to the ATM link for transferring data between a virtual connection on the ATM link and one or more timeslots on the TDM bus.

Abstract: A distributed voice processing system comprises two or more voice processing machines 50A, 50B, connected by an isochronous network. In the preferred embodiment this network comprises an ATM switch 80 and appropriate ATM links 82A, 82B. Each of the voice processing machines includes telephone line interface units 52 connected to the telephone network 5 via respective telephony channels 15, a TDM bus 54, voice resources 55 (such as voice recognition, voice response functionality, etc), and an ATM adapter 58 to allow communications over the ATM network. In operation, a call may be received at the line interface unit at a first voice processing machine, and placed onto a TDM bus at that machine. The call is then taken off the TDM bus by the ATM adapter, and routed over the ATM network to the ATM adapter at a second machine, which places the call on the TDM bus at this second machine.

Abstract: This invention relates to an intelligent peripheral (IP) for connecting to a telephone network and providing added capabilities to the network. More particularly the invention relates to programmable suppression of call answer supervision by an intelligent peripheral or a voice recognition unit in a telephone network. The method comprises the steps of: the peripheral device receiving a call setup message from a network switch when a call is being initiated. The IP, on receipt of the call setup signal, suppresses the normal answer signal output and instead outputs a progress signal to the network switch. For an ISDN network the progress signal is a Progress Indicator PI=08 signal.