Abstract: One or more images of a tubular being run into a well are captured. The one or more images can be captured by an image sensor. The tubular includes a first tubular section and a second tubular section connected together by a connection. An onsite edge gateway local to the image sensor is configured to perform various operations. Based on the captured one or more images, an elevation of the connection relative to a reference elevation of the well is determined. Based on the determined elevation, an operating condition is determined. It is determined whether the operating condition is included in an automation rule. In response to determining that the automation rule includes the operating condition, a signal is transmitted to drive a controllable device.

Abstract: An integrated control system (ICS) for a well drilling platform is provided, which well drilling platform has a plurality of control systems and devices. The ICS includes an ICS controller is in communication with a master control. The ICS controller includes a memory device coupled to a processor. Instructions executed by the processor cause the ICS controller to: communicate with each of the control systems to determine a status of each of the control systems; cause the master control display to display status information for at least one of the control systems; in response to an operator input perform a well drilling platform function, the function requiring a coordinated state between a first control system and at least a second control system, configure the first control system and the second control system into a coordinated state.

Abstract: The present invention provides a power information exchange method and a device, and relates to the communications field, so as to exchange actual power of a device, effectively reduce network power consumption, and improve network energy efficiency performance. The method includes: sending, by a first device, a power information request message to each second device, where the second device is a device connected to the first device, and the power information request message is used to instruct each second device to measure actual power of the second device; and receiving, by the first device, a power information reply message sent by each second device, where the power information reply message carries the actual power of the second device sending the power information reply message, and the power information request message carries type information of the actual power and format information of the actual power.

Abstract: This document discusses, among other things, limiting contact to a networked contact center that is a host to multiple tenants. In an example embodiment, a communication is received by a networked contact center. In determining whether to allow the communication to reach contact center resources, a contact rate value may be examined. The contact rate value may represent an allowable quantity of contact within a time interval. For some example embodiments, a determination of whether the network contact center is to accept or reject the communication is made based on the contact rate value.

Abstract: A datacenter management server includes a datacenter operations manager and a datacenter infrastructure manager with an infrastructure viewer and an asset deployment tool. The datacenter operations manager compiles datacenter hierarchy information for a datacenter, including identity information for a virtualized environment and identity information for a virtualization capable system. The virtualization capable system is deployed as a stand-alone system of the datacenter. The datacenter infrastructure manager receives the datacenter hierarchy information, directs the infrastructure viewer to display a hierarchical overview of the datacenter, including depictions of the virtualized environment and the virtualization capable system. The hierarchical overview is based on the identity information. The datacenter infrastructure manager also receives a selection of the depictions from a user and directs the asset deployment tool to deploy the virtualization capable system to the virtualized environment.

Abstract: A datacenter management server includes a datacenter operations manager and a datacenter infrastructure manager with an infrastructure viewer and an asset deployment tool. The datacenter operations manager compiles datacenter hierarchy information for a datacenter, including identity information for a virtualized environment and identity information for a virtualization capable system. The virtualization capable system is deployed as a stand-alone system of the datacenter. The datacenter infrastructure manager receives the datacenter hierarchy information, directs the infrastructure viewer to display a hierarchical overview of the datacenter, including depictions of the virtualized environment and the virtualization capable system. The hierarchical overview is based on the identity information. The datacenter infrastructure manager also receives a selection of the depictions from a user and directs the asset deployment tool to deploy the virtualization capable system to the virtualized environment.

Abstract: Seamless wideband support is afforded by utilizing split-band data streams. For wideband signals, the 8 kHz bandwidth is divided into a low band, with approximately 0-4 kHz bandwidth, and a high band, with approximately 4-8 kHz bandwidth. Narrowband functions and services operate on the low band, while wideband functions and services operate on both low and high bands.

Abstract: A method and apparatus are provided for exchanging configuration information within a call center system between a central server and a plurality of dissimilar contact centers. The method includes the steps of the central server monitoring an contact center of the plurality of dissimilar contact centers for a configuration change message and converting the configuration change between a format of the central server and a format of a subscribing contact center of the plurality of contact centers, where the subscribing contact center is different than the monitored contact center.

Abstract: A system for enabling collaboration between two or more customer contact campaigns running within a call center environment includes at least one outbound contact server (OCS) resident on a digital medium, the OCS including an automated dialer application resident on a digital medium thereon or accessible thereto for dialing contact numbers from contact records assembled for the running campaigns, a call monitoring and recording system executing from software on a digital medium, for monitoring call dialing progress and business results of completed calls, a central data repository for storing dialing progress and business results data collected by the running outbound campaigns, and a data sharing mechanism executing from software resident on a digital medium, accessible to each campaign running on the OCS for sharing collected data among the running campaigns.

Abstract: Systems, methods, and machine-readable articles of manufacture enable private notification of a participant in a telephone conference. In representative embodiments, a system receives a telephone call intended for a first conference participant, generates an informative announcement containing information regarding the call, mixes the informative announcement with the conference audio, and privately plays the mixed audio to the first participant. In other representative embodiments, the system concurrently generates a non-informative announcement, mixes the non-informative announcement with the conference audio, and plays the second mixed audio to the other conference participant or participants. In this way, the first participant is notified of the incoming call while simultaneously listening to the conference audio, and the information regarding the call is not shared with the other conference participant or participants.

Abstract: A system and method for managing a virtual private network. The system and method include a graphical user interface. The graphical user interface is configured to display at least one link for accessing, via the interne, a web-page associated with a switch offering virtual private network functions.

Abstract: In conventional telephone services, methods of response to a call in cases where the destination caller cannot answer the call are limited, such as by playing back an answering machine message or transferring the call to another telephone system in a rigid manner. In such systems, there is no flexibility in choosing the manner of response depending on the situation of the destination caller. The example systems and methods described herein enable the response method to be automatically selected depending on user's current position information in an Internet telephone system in which voice data is transmitted and received via the Internet. The user registers response methods associated with network addresses in a database, and the user's current position is determined from the IP address.

Abstract: A method and apparatus for configuring connectivity at a hub having a plurality of subscriber lines from a plurality of subscriber premises and a plurality of feeder lines from a central office. The hub provides connectivity between the plurality of subscriber premises and the central office. The method and apparatus include categorizing the plurality of subscriber lines into a plurality of groups based on penetration rates and chum rates of the plurality subscriber lines. Each group of subscriber lines are connected to feeder lines based on the penetration and chum rates for POTS and/or DSL services. Subscriber line groups with high penetration rates and high/low chum rates are coupled directly to feeder lines. Subscriber line groups with low penetration rates and high/low chum rates are terminated at the hub. Subscriber lines with an intermediate penetration rate are candidates for being connected to the feeder lines via an automatic switch.

Abstract: Disclosed herein is a keypad of a portable terminal including an array of a plurality of alpha-numeric key buttons for the input of alphabetic letters of a language, for example, English. The vowel input portion includes a plurality of key buttons, which are allotted with vowels of English alphabet showing a high frequency of use, and some consonants of English alphabet. The key buttons of the vowel input portion are grouped and arranged at a selected position to achieve a high accessibility of the user's. The consonant input portion includes the remaining key buttons, allotted with the remaining consonants of English alphabet.

Abstract: A communication method, device and system for implementing a scheduling communication service are provided. The communication system includes: a switch, a scheduling application server, and a scheduling terminal, the switch transfers a request message or a response message with a scheduling terminal as a caller or a callee to the scheduling application server, the scheduling application server stores session parameters of the scheduling terminal, determines the type of the call request message, converts the request message into one or more common call requests or response messages that can be identified by the switch, and sends the converted messages to the switch.

Abstract: A telephony system includes a switch coupled to a call agent and a legacy application, and further coupled to resources, some controlled by the call agent and others controlled by the legacy application. The switch processes connection requests from the call agent and the legacy application, and, using a resource emulator as an intermediary, establishes connections between call agent controlled resources and legacy application controlled resources.

Abstract: Disclosed is a system and method for querying and recovering circuit group state in a switching system. A self station searches processors including circuit groups which are allocated to a certain route, and requests circuit group state from the searched processors successively. The processors receiving the request identify whether or not a corresponding circuit is allocated to the certain route by reviewing all circuits included in the processors. In addition, the processor groups circuits which are successively allocated among the circuits allocated to the certain route, and queries state of the circuits by generating one CQM per group. When the query process is completed by the processors, the self station reports results of the circuit group state query to an operator. Therefore, the operator can query the states of circuit groups as a route unit in the self station.

Abstract: The PBX system includes an analog to digital, and digital to analog, (A/D) conversion where the sample size and the sample rate are selectively adjustable. The A/D structure includes registers which hold values indicating the sample size and the sample rate for the conversion. When the A/D structure is configured, the A/D structure reads the values in the register and configures itself to the sample rate and sample size indicated by the registers. When the sample size and sample rate is to be changed, the values in the registers are changed and the A/D structure is reconfigured.

Abstract: A common package serves as, for example, a common network interface package for a switching system. Since the common package is usable for various purposes, its cost is reduced and the cost of maintenance and management of the switching system is reduced. The common package is a printed board package (35) installed in an apparatus and used for a variety of purposes. The common package includes a programmable device (36), memories (45 to 48) for storing programs to configure the programmable device, a selector (41) for selecting one of the programs from the memory so that the selected program may so configure the programmable device as to make the common package serve as a specific circuit, and an instruction unit (51) for issuing an instruction to specify the program to be selected by the selector.

Abstract: A distributed control system permits local or remote control of equipment. The distributed control system provides a communication bridge through a local control panel between a non-real-time network, such as an Ethernet, and a real-time network, such as a controller area network. Both soft real-time and hard real-time networks are suitable, but hard real-time is preferred. The system uses multiple distributed control units to control various equipment components and is thus highly expandable. The distributed control system may be applied in any environment. When applied to a skid-mounted coiled tubing unit, the distributed control system reduces the amount of hydraulic hose required and therefore makes set up and take down shorter and more economical.

Abstract: A Call Management System provides for management of calls directly by system users at their workstation computers via a digital data network such as a digital networks not controlled via the user's telephone instruments as in prior systems. A call management computer intercepts incoming calls and controls the handling of such calls according to instructions received from the users' workstations, which are accessed via the digital data network. Trunk circuits are monitored and controlled using digital signal processors to proactively identify the called party, the calling party and the call type (voice, Fax, data) and control and to monitor all calls. Each different type of call is managed differently and automatically through direct user workstation controls and/or user-generated rules to provide special treatment for designated callers. Multiple calls to user at the same time may be handled with no busy signals to callers. Only one number is needed for a user to receive voice Fax and data calls.

Abstract: A method for creating a telephone digital switching platform to provide conversion and routing of telephone calls arriving on a number of telephony interfaces to a number of outbound telephony interfaces, based on in parameter and out of parameter call setup information. Receiving and transmitting interfaces can include, but are not limited to, Integrated Services Digital Network (“ISDN”), Digital Transmission Carrier System (“T-1”), DID (“Direct Inward Dial”), Loop Start, (“E & M”) and Direct Outward Dial (“DOD”). Conversion and routing is performed by the steps of capture of call setup information, conversion to “dial number” via database lookup, selection of outbound pathway based on database information, and placement of outbound call and switched connection to inbound call.

Abstract: A novel communication handling system 25 is disclosed. In one embodiment, communication handler process 120 accesses read-only, in-memory copies 130 of data tables from read-write table storage 140. In this embodiment, handler process 120 provides control information to hardware 101 so that hardware 101 performs selected actions, such as playing a recorded message, recording a message from the caller, transferring the call to a particular extension, etc. In other embodiments, communication handler process 120 directs voice, data, or video chat requests delivered via an external network 55. In still other embodiments, the in-memory copies 130 are updated manually and/or automatically. In further embodiments, handler process 120 may perform operations on sets of records from in-memory copies 130.

Abstract: Disclosed is a mobile communication system that includes a mobile switching center having a multiprocessor configuration and radio base stations subordinate to the mobile switching center, with a single radio base station being connected with mutually independent signaling links from a plurality of processors within the mobile switching center. When a call issued from that or other system is received by a subscriber under that system, call ID information contained in a mobile call demand signal sent from the mobile switching center to the radio base station has a storage area for an identifier of a processor within that mobile switching center. The radio base station allows the destination of return of a mobile call response signal to be the processor indicated by the processor identifier.

Abstract: A telephony system includes a switch coupled to a call agent and a legacy application, and further coupled to resources, some controlled by the call agent and others controlled by the legacy application. The switch processes connection requests from the call agent and the legacy application, and, using a resource emulator as an intermediary, establishes connections between call agent controlled resources and legacy application controlled resources.

Abstract: A method of controlling affiliation of a remote line-collection device with a plurality of switches connected via a network includes the steps of providing each switch with a backup-storage area in advance in addition to a normal storage area, and transferring control data of the remote line-collection device from the normal storage area of a first switch to the backup-storage area of a second switch when affiliation of the remote line-collection device is changed from the first switch to the second switch.

Abstract: Switching equipment for setting up a connection between at least two pieces of terminal equipment wherein terminal equipment-related supplementary information such as, for example, the telephone number of calling terminal equipment is transmitted in addition to the actual voice information. In order to prevent an overload of an exchange processor means of the individual exchange units, it is inventively proposed to provide monitoring means that monitor the usage degree of the individual exchange processor means and, given upper transgression of a specific usage degree, delay the enable of second transmission units provided for the transmission of the terminal equipment-related supplementary information dependent on the usage degree of the corresponding exchange processor means.

Abstract: A method of switching subscriber calls is disclosed that includes receiving a subscriber call request on an access terminal, determining whether the access terminal is in communication with a telecommunications network and routing the subscriber call request through alternate telecommunications equipment if the access terminal is not in communication with the telecommunications network.

Abstract: Computer-controlled switching systems, such as telephone switching systems, like the No. 4ESS™, are extremely complex. Such systems routinely require millions of bytes of program instruction and millions of bytes of data to function. When a system is lost, or is rendered inoperative, reassigning the tasks of the system to a backup or replacing the system can be simplified if a backup copy of the program and data is available. Automatically performing the tasks under program control greatly reduces the complexity of the tasks and improves system reliability. Automatic backup of complex system software and data files is accomplished under program control which periodically directs a switching system to copy its files onto a remotely located administration computer from which the backed up information can be retrieved in the event of a system failure.

Abstract: User terminals are connected to a telecommunication system. The telecommunication system includes a control system for the control, such as set-up, release and modification, of connections between the user terminals. A large portion of functions are common for control of dynamical as well as semi-permanent connections. Control of a connection can be initiated from any of the user terminals to which the connection relates, or from other user terminals. Control data for the connections can be stored in different types of storage resources in the control system, the different types of storage resources having different degrees of reliability.

Abstract: The routing of calls in a telecommunications switching system (12.sub.1, 12.sub.2) comprised of one or more fabrics (22.sub.1, 22.sub.2, 22.sub.3) controlled by corresponding fabric controllers (26.sub.1,26.sub.2 and 26.sub.3, respectively) is carried out by a routing processor (28) independent of the fabrics. The routing processor actually selects the route for each call by specifying a channel to a neighboring switching system to carry the call. Further, the routing processor has the capability to respond to queries from other switching systems regarding trunk group status and traffic load to enable the processor to assist the routing processor of the other switching system to make routing decisions. By implementing fabric independent routing, routing processing is re-used for new fabric capacity, and is readily extended to accommodate new service types, such as bursty data services.

Abstract: Apparatus and method for achieving distributed telephony management within a network of telecommunication switches are disclosed. By using techniques known to computer communication technology but as yet unapplied to telephony, execution of tasks necessary for the proper functioning of a telephony network are performed with increased efficiency, ease, and throughput by distributing processing amongst the switches composing the network and attached computers.

Abstract: A switch (10) for controlling the switching of communication paths in communication equipment, such as telephone networks, is connected to a plurality of controllers (11, 12, 13) via a divider unit (14). The divider unit (14) divides some or all of the resources of the switch (10) into a plurality of switch resource sets, and those switch resource sets are then associated with respective ones of the controllers (11, 12, 13). This has the effect of enabling each switch resource set to act as an independent sub-switch, with each controller (11, 12, 13) then controlling a corresponding sub-switch. This division of the resources of the switch (10) allows different control architectures to be operated simultaneously. This permits different virtual networks to be constituted on the same physical network. Any one of the controllers (11, 12, 13) has access only to the switch resource set or sets allocated to that controller (11, 12, 13).

Abstract: A distributed communications switching system and its associated telecommunications network infrastructure(10) includes a plurality of interconnected switching systems (12.sub.1, 12.sub.2 and 12.sub.3), some of which may be controlled by another switching system and its associated telecommunications network infrastructure. The switching systems are controlled via at least one switch processing platform (16) that generates generic commands for receipt by the switching systems in response to signaling messages received by the SPP. A fabric application interface (19) couples the switching systems to the switch processing platform for distributing generic commands to and from the appropriate switching system and for translating the generic commands into native commands (or vice versa) for execution by the switching system. The fabric application interface also translates signals received at the switching system into generic commands for receipt by the switch processing platform.

Abstract: The call processing capacity of the of a telecommunications network by forming the communication switches forming the network into respective groups of communication switches. The communication switches forming a respective group of switches are fully interconnected to one another and then each of the communications switches forming a respective group is connected at least one other group of telecommunication switches as a way of interconnecting the groups with one another.

Abstract: A method and an apparatus for managing call resources, which can contribute to an improvement in the performance and stability of systems to which the method and apparatus are applied. Call processors are connected to a shared library via a resource manager which is internally provided with a resource management table for storing permanent processor ID numbers of the call processors and resource allocation information. The call manager controls access to the shared library in association with requests of the call processors for an allocation or release of the resources in such a manner that the access is given for only the stored permanent process ID's. When a request is made to release call resources currently in use, the call manager determines whether or not the process ID of a call process associated with the request for the release coincides with the process ID of the call process currently using the stored call resources.

Abstract: A Call Management System provides for management of calls directly by system users at their workstation computers via a digital data network such as a digital networks not controlled via the user's telephone instruments as in prior systems. A call management computer intercepts incoming calls and controls the handling of such calls according to instructions received from the users' workstations, which are accessed via the digital data network. Trunk circuits are monitored and controlled using digital signal processors to proactively identify the called party, the calling party and the call type (voice, Fax, data) and control and to monitor all calls. Each different type of call is managed differently and automatically through direct user workstation controls and/or user-generated rules to provide special treatment for designated callers. Multiple calls to user at the same time may be handled with no busy signals to callers. Only one number is needed for a user to receive voice Fax and data calls.

Abstract: A method for controlling bidirectional line protection switching by using a remote defect indication signal. The method includes the following steps of: inserting and transmitting a remote defect indication signal through the opposite directional link, in case the receiving end of working line detects a defect while a traffic is transmitted via a bidirectional link, and then switching to a back-up line by controlling the selector of the receiving station; and switching to the protection line by controlling the selector of the transmitting station, in case the remote defect indication signal is detected via the opposite directional link.

Abstract: A photo-assisted secondary keypad for a telephone. The secondary keypad includes a plurality of openings that expose a number of membrane switch keypads. Depression of a keypad dials a telephone number stored in a memory of the phone unit. Each opening has at least one slot which receives and captures a paper insert. The insert may be a photograph or a graphic image of an individual, police car, etc. The phone numbers associated with each keypad correspond to the images of the inserts. The inserts can be easily installed into the openings by sliding a corner of an insert into the slot.

Abstract: A telecommunications switch (12) includes a dial plan database (300) used for creating, identifying, and verifying dial plan codes and dialing sequences of a desire dial plan (100). The dial plan (100) is created through a craft terminal (201) that communicates with a craft interface (200) of the telecommunications switch (12). The telecommunications switch (12) uses dial plans created and stored within the dial plan database (300) in performing a digit parsing routine. The digit parsing routine identifies dial plan codes and dialing sequences through digit collection by systematically eliminating possible dial plan codes until one is identified. The identified dial plan code is processed by performing valid or error actions associated with the identified dial plan code. The digit parsing routine continues with an incoming call until it has been appropriately handled and awaits for the next incoming call digits to be received.

Abstract: In a cross connect apparatus, a switch section includes a plurality of switches and having n input terminals and m output terminals. A control section reads a current connection information indicative of a current connection state of the switch section in response to a connection command, and determines based on the read connection information, whether it is allowed to establish a connection state of the switch section designated by the connection command. When it is determined to be allowed, the control section establishes a new connection state of the switch section designated by the connection command.

Abstract: A telephone call center management system capable of simultaneously operating at least two separate telephony applications. A first group of agents is assigned to service a first telephone application. A first telephony center supervisor is assigned to at least view the operation of at least the first telephone application and at least the first group of agents. A second group of agents is assigned to service a second telephone application, while a second telephony center supervisor is assigned to at least view the operation of the second telephone application and the second group of agents. A supervisor can not view or control the agents or resources of an application not assigned to that supervisor. Supervisors may be assigned different application access levels, which control how much supervision supervisors have over the agents in applications the supervisors may access.

Abstract: A telephony call center management system allows agents to be assigned and grouped into work groups. A supervisor is assigned to supervise one or more work groups. Supervisors may move agents between work groups that the supervisor oversees. A supervisor may also assign unassigned agents to a work group which the supervisor controls. The supervisor may view statistics on the performance of only those agents assigned to a work group to which the supervisor is assigned.

Abstract: A system and process for accepting, assigning, and delivering telephony communications data between computer telephony integration clients and stored program control point applications through a server-based virtual circuit management system. The virtual circuit management system includes an I/O Vector object array. Objects instantiate uniquely with logical identification properties, telephony data and a vector for data delivery to either clients or applications. The logical identification allows data managed by the virtual circuit management system to be persistent in both the source and destination systems. In this process, bytes of data are read into the object array from the server's operating system's input/output process. Object instances are created within the Vector object array through a process based upon the properties inherited from the data written from the I/O system.

Abstract: Voice calls between multimedia workstations (1937-1939) of a LAN-based client-server multimedia communications system (1911) and telephones (1918-1919) of a telephone system (1912) are effected by an interface that comprises a pair of ISDN ports (1920 and 1940) interconnected by an ISDN link (1910) and that transfers ISDN control signals and user communications between the LAN (1936) and the telephone switching fabric (1916), and by proxy-user client software (21210 and 21212) that executes on the server (1933) of the multimedia system and converts control signals between the ISDN signals of the ISDN interface and a call processor (1914) of a telephone switching system (1913), and the middleware signaling of the server and its client workstations. The proxy-user client software comprises an object-oriented programming object, and each telephone that is engaged in a call with a workstation is represented in the multimedia system by its own instance (21210-1 to 21210-2) of the object.

Abstract: A system 200 and method for monitoring audio power level of speech of an agent in an automatic call distributor 100 is provided. The system 200 comprises an agent audio power circuit for detecting the audio power level of the agent's speech. The audio power circuit includes an agent maximum circuit 216 for comparing the detected audio power level to a predetermined maximum threshold power level. An agent minimum circuit 218 compares the detected audio power level to a predetermined minimum threshold power level. When the detected audio power level exceeds, or equals, the maximum threshold power level, or when the detected audio power level is less than, or equals, the minimum threshold power level, an appropriate message is displayed on an agent terminal 118 to "Speak Softer" or to "Speak Louder". An agent gain control 220 may be provided for automatically adjusting the audio power level of the agent's speech.

Abstract: An input/output switching apparatus which can construct the system more flexibly as compared with the conventional system. The input/output switching apparatus is configured so that a user can manage the connection state of a physically-existing switching unit as the connection state of a virtual switching unit which corresponds to the physically-existing switching unit. Thus, the user can control the physical switching unit merely by operating the virtual switching unit which is constructed so as to be convenient for operation.

Abstract: A method and apparatus for detecting events occurring in a telecommunications network is disclosed which comprises stored program control (SPC) exchanges, each SPC exchange comprising a switch and processors for executing software programs to control the switch. Code sequences, or daemons, are implanted in selected portions of the software programs, each code sequence including a conditional statement responsive to certain events and at least one activity resulting from the detection of a certain event satisfying the conditional statement. A lock value is assigned to each of the code sequences, each lock value uniquely identifying the corresponding code sequences and being operable to activate the processor for executing the code sequence. A key value is compared to each lock value for selectively activating the processor to execute the code sequence when the key value equals the lock value.

Abstract: A stored-program-controlled local telephone exchange in which internal connections and conference connections are treated as though they were both a combination of an external connection, namely an originating connection and a terminating connection. This is achieved by providing a virtual route, which is realized by records in a computer memory and which is linked to a call handler and which, from the aspect of the call handler, behaves as a conventional trunk terminal. Alternatively, the virtual route can be replaced with two hardware implemented digital trunk terminals which are mutually connected by a physical wire connection. In the case of a conference connection, the conference equipment is connected to a hardware implemented digital trunk terminal which coacts with the virtual route.

Abstract: A virtual private line key telephone system is provided. The system includes a console including a plurality of line keys each associated with a party that can be reached via a switched trunk line. A look-up table means associates the line keys with the telephone numbers of the associated parties. A communication path is established from the console to one of the trunk lines. Signals are sent to the central office via the selected trunk line corresponding to the telephone number in the look-up table means associated with a line key that is actuated to place a calls. The telephone number of incoming calls are determined and compared with telephone numbers in the look-up table. Thereafter the line keys which are associated with the incoming calls are determined. The incoming call is coupled to the console when a line key associated with the incoming caller is actuated.