Patent Application
20130305029
1. Field of the Invention
Embodiments of the invention relate to integration of data and telephony networks.
2. Background of the Related Art
The integration of telecommunication networks and data networks is becoming increasingly important. Telecommunication networks are used primarily for communication by telecommunication subscribers using telecommunication terminals such as telephones. Data networks are used primarily for networking computers, for example PCs with servers. Methods and arrangements whereby applications installed on computers control and monitor communication systems and communication connections are generally known as CTI solutions (CTI=Computer Telephony Integration). Both communication system ports and connections between ports can be controlled and monitored in this manner. The respective connections are temporary communication channels between two or more subscribers to one or more communication systems.
When a CTI solution is operating, data with control and status information are transmitted each time between a communication system and a CTI application (CTI application program). To this end, communication systems have special interfaces for the data exchange: CTI interfaces. The respective applications or PCs likewise have corresponding CTI interfaces for this data exchange. For this, the CTI interfaces of the communication system and those of the application are connected with one another via a data line or a data network. Because the maximum number of CTI interfaces in a communication system is limited, a telephony server is often connected between the communication system and the applications.
The publication WO 98/51092 A1 “Computer Telephony Integration Gateway” shows a public communication network with several communication systems and a private communication network with several domains, each of which features computers with applications for controlling and/or monitoring the public communication network's resources. The arrangement shown features a “CTI gateway” as a conversion device, which changes the type of data sent for controlling and/or monitoring resources from the public communication network to the private communication network, so that these data appear as the data from one single public communication network, and conversely changes the data that are sent by the applications from the private communication network to the public communication network, as though they had been sent from a private communication network with only one application.
DE 101 59 636 B4 describes a method for controlling and/or monitoring resources and connections using the exchange of data between communication systems and at least one application, wherein the data have identifiers that differentiate the resources and the connections, and the identifiers of the resources are converted during the exchange such that they present themselves as the identifier of one single communication system with subscriber connections for the one or for each application, characterized in that each of the identifiers of the connection between resources of different communication systems comprises one local connection number (call ID) of the communication system that participates in the connection and one global connection number (call ID) and in that through the conversion the global connection number (call ID) is transmitted to the application such that it cannot be differentiated by the application from a local connection number (call ID).
Embodiments relate to methods for automatic startup of a first communication terminal configured for speech communication on at least one second communication terminal configured for text communication, in which the speech communication between communication terminals is processed through at least one speech communication server and the text communication between communication terminals is processed through at least one text communication server. Embodiments also relate to arrangements for automatic transmission of information on the startup of at least one first communication terminal configured for text communication, to at least one second communication terminal configured for speech communication, with at least one text communication server for processing the text communication between communication terminals and at least one speech communication server for processing the speech communication between communication terminals.
The XMPP protocol is a well-known type of instant messaging protocol that plays an important role in computer-telephony integration. Known XMPP protocol-based client/server architectures are operated asynchronously to the telephone. Automatic connection and startup are not part of known solutions. Embodiments of the invention may provide for automatic startup of a CTI server operating in an XMPP environment, for example.
The figures show:
The invention involves a method for automatic startup of at least one first communication terminal configured for speech communication on at least one second communication terminal configured for text communication, in which the speech communication between communication terminals is processed through at least one speech communication server and the text communication between communication terminals is processed through at least one text communication server. The at least one speech communication server and the at least one text communication server exchange messages through at least one converter device, and the startup is signaled from at least one first communication terminal through the at least one text communication server, the at least one converter device, and the at least one speech communication server to at least one second communication terminal.
According to one preferred embodiment of the invention, whose features can also be combined with the features of other embodiments of this invention, startup signaling information is then transmitted between the text communication server and the speech communication server if the speech communication server has previously signaled to the text communication server that the startup should occur.
According to another preferred embodiment of the invention, whose features can also be combined with the features of other embodiments of this invention, startup signaling information is then transmitted between the text communication server and the speech communication server to an extent specified in a prior signal.
According to another preferred embodiment of the invention, whose features can also be combined with the features of other embodiments of this invention, the method includes the transmission of at least one piece of startup signaling information to a communication terminal.
According to another preferred embodiment of the invention, whose features can also be combined with the features of other embodiments of this invention, at least the speech communication server transmits messages without prompting.
Embodiments may include an arrangement for automatic transmission of information on the startup of at least one first communication terminal configured for text communication, to at least one second communication terminal configured for speech communication, with at least one text communication server for processing the text communication between communication terminals and at least one speech communication server for processing the speech communication between communication terminals. In this regard, at least one converter device is provided through which the at least one speech communication server and the at least one text communication server exchange messages. The startup information for at least the first communication terminal is transmitted through the at least one text communication server, the at least one converter device, and the at least one speech communication server to at least one second communication terminal.
According to one preferred embodiment of the invention, whose features can also be combined with the features of other embodiments of this invention, the arrangement is configured such that startup signaling information is transmitted between the speech communication server and the text communication server if the speech communication server has previously signaled to the text communication server that the transmission should occur.
According to another preferred embodiment of the invention, whose features can also be combined with the features of other embodiments of this invention, startup signaling information is transmitted between the speech communication server and the text communication server to an extent specified in a prior signal.
According to another preferred embodiment of the invention, whose features can also be combined with the features of other embodiments of this invention, at least one piece of startup signaling information that is transmitted to a communication terminal includes at least one piece of operating information.
According to another preferred embodiment of the invention, whose features can also be combined with the features of other embodiments of this invention, at least the speech communication server transmits messages without prompting.
Depending upon the embodiment, an advantage of the solution according to the invention is that a method for automatic startup of a communication terminal configured for speech communication on a communication terminal configured for text communication can start up version-dependent CTI control, known as “machine-to-machine” communication, by itself (automatically) without parameters needing to be configured for this. Both “machines,” i.e., the switch (the PBX) and the XMPP server, communicate their CTI capabilities to each other and adapt by themselves (automatically) to the abilities of their partners without outside intervention (negotiation of capabilities). This means that a user (in general and for start/restart) does not have to go through any registration procedures (such as configuration during setup/installation of a program like Microsoft Word). The invention therefore provides the basis for synchronization between (switch/PBX=Speech server and XMPP server=Presence server) and marries Speech with Presence (similar to the relationship between motor and chassis).
The invention is described below in more detail based on preferred exemplary embodiments and with reference to the figures.
In this manner it is possible for the communication subscriber who is using the text communications client CLB to be informed of a change in status of the speech communication terminal EGA, without user A having to initiate a manual transmission of information to user B.
Embedding the call control gateway CCGW into the overall system, shown in
In this embodiment, the speech communication server SCS consists of a CSTA service provider (CSP), a feature processor (FP), and a LAN device handler (LDH), among other things. The references EG A and EG B designate terminals as shown, GW designates a call control gateway (CCGW), the text communication server (TCS) in this example is an Openfire XMPP server, and the clients CL A and CL B are represented by Spark XMPP clients (S1, S2), for example. Here it is possible, but not necessary, for the components described above to be physically connected to each other or located within a certain domain.
The communication channel (13) between the CCGW (GW) and the XMPP (TCS) server can consist of an XMPP server/server connection, with the CCGW acting as a standalone XMPP server. It can also consist of an XMPP client/server connection in which the CCGW is handled as a client in the XMPP server (e.g., Openfire). A third possibility is for the CCGW to be a server component of the XMPP server, as in XEP 0114, for example. The communication channel (13) between the CCGW (GW) and the XMPP (TCS) server is also used, for example, to transmit startup information from at least one first communication terminal (CL A, CL B) through the at least one text communication server (TCS), the at least one converter device (GW), and the at least one speech communication server (SCS) to the at least one second communication terminal (EG A, EG B).
The PBX, a switching system, and the instant messaging server XS, for example an XMPP server, are connected using a call control gateway (CCGW). The CCGW is the connection between the CTI of a PBX and the XMPP server. An XMPP client can subscribe to and provide CTI services via this call control gateway. In one embodiment of the invention, this preferably consists of the CSTA call control services and events described in ECMA-269 (Standard ECMA-269, Services for Computer-Supported Telecommunications Applications (CSTA) Phase III, 8th edition (June 2009)). This document (http://www.ecma-international.org/publications/standards/Ecma-269.htm) is part of this description.
On the one side, the connection to the feature processor is established via CSTA XML by means of a so-called CSTA service provider (CSP). On the other side, the CSTA is transmitted via XMPP to the XMPP server (Openfire in the embodiment according to the figure). Using the CCGW, an XMPP client (Spark in the embodiment according to the figure) can subscribe to CTI services.
To guarantee automatic startup of the CTI functionality, the following steps should be followed:
Upon signing on to the server, the client asks for the server's characteristics through the Discovery service (in an embodiment according to XEP-0030). The response includes one or more <feature/> elements, among other things. Each of these elements includes a “var” attribute that represents the supported namespace. The possible CTI functionality is added in this available namespace.
If the response in the received <feature/> elements contains a reference to general or version-specific CTI support, a positive query result (the client supports this CTI version) allows CTI services to be requested from the server by means of a query stanza from the determined namespace, contained in a “Get” type of IQ stanza.
If the response from the server includes multiple CTI versions that the client also supports, the client is given a choice from a priority list with prioritized CTI versions or namespaces or can choose the first namespace named in the response.
When there is general CTI support from the server, the CTI version query occurs only after a request for CTI functionality.
When a client uses the Discovery service (in one embodiment according to XEP-0030), the server sends the CTI versions that it supports through the namespace established for the <feature/> elements.
Depending upon the embodiment of the invention, it preferably supports the CSTA XML Edition 3 (<feature var=“http://www.ecma-international.org/standards/ecma-323/csta/ed3”/>) or the CST XML Edition 5 (<feature var=“http://www.ecma-international.org/standards/ecma-323/csta/ed5”/>).
Concrete support of a CTI version allows the server to run its own validation tests. One type of validation test is positive assignment of the requested CTI service to the JabberID and the call number assigned to the client. This allows the server to make decisions regarding the quality of the CTI connection (1st party or 3rd party).
With a 1st-party CTI connection, the client can only execute CTI services for the call number assigned the Jabber ID; other service requests will be denied. With a 3rd-party CTI connection, the client can execute CTI services for any call numbers.
If the server does not support a concrete CTI version, the server can leave CTI version testing to the CCGW or the CTI instance next in line.
For the CTI request by the client through IQ, the server sends back the status of the CCGW and the call numbers assigned to the client (device list).
To make networking scenarios possible, as an option this response can also refer to another server that also supports CTI functionality. In this case, the response does not provide a device list, and the CCGW status is stated as “unknown.” The client's next step is to start over with the Discovery service using the now-known server.
Another networking possibility is having a single server support multiple CCGWs.
If the server receives a login/logoff message from the CCGW, the server sends a status message to all clients that have subscribed to CTI functionality. This status message is also generated by the server when the connection to the CCGW is terminated.
Logging in to the server makes the CTI connection available. The CCGW checks the CTI version and terminates the connection if the CCGW does not support that CTI version. If applicable, the CCGW leaves CTI version testing to the CTI instance next in line.
As an option, the direct presence status can be used to support automatic startup.
After the CCGW starts, it sends a direct presence message to the XMPP server that provides the CTI functionality. This causes the XMPP server to start a mechanism that informs any already registered CTI-capable clients assigned to this CCGW that the CCGW is now available (this is useful when the XMPP server has multiple CCGWs available).
If the connection between the CCGW and the CTI-controlled XMPP server is now unexpectedly terminated, the XMPP server receives the presence message telling it that the CCGW is no longer available. This allows the XMPP server to inform all logged-in clients assigned to this CCGW that their CCGW is currently no longer available and therefore CTI functionality has been discontinued.
If a client receives a status message from an XMPP server saying that the assigned CCGW is now reachable (regardless of whether the status message is the response from the XMPP server to the CTI service query or whether the status message is the result of a subsequently available CCGW), then the client sends a direct presence message to the CCGW. This causes the XMPP server to inform the CCGW if the client is no longer available, even if the CCGW is not in the client's contact list.
If the CCGW reports that one of its clients is no longer available, then the system tests to see whether that client has a monitor point set. If so, a “MonitorStop” can be sent automatically in place of that client to the CTI instance next in line.
In
The CCGW login and logout while clients are already logged in are described below based on various embodiments of the invention.
The embodiment shown in
For reasons of clarity, the messages between the XMPP server and the three CSTA-capable clients shown here are shortened, and the client acknowledgement (“result” type of IQ stanza and in it a query stanza for the namespace http://vvww.ecma-international.org/standards/ecma-323/cstaied3) is not shown.
In the embodiment shown in
In the embodiment shown in
Embedding into the overall system, as in the example of OpenScape Office MX, is intended to represent a general approach, in which the method for automatic startup of at least one first telecommunication terminal (EG A, EG B) configured for speech communication on at least one second telecommunication terminal (CL A, CL B) configured for text communication, in which the speech communication between communication terminals is processed through at least one speech communication server (SCS) and the text communication between communication terminals is processed through at least one text communication server (TCS), is characterized in that the at least one speech communication server (SCS) and the at least one text communication server (TCS) exchange messages through at least one converter device (GW), and in that the startup of the at least first communication terminal (CL A, CL B) is transmitted through the at least one text communication server (TCS), the at least one converter device (GW), and the at least one speech communication server (SCS) to the at least second communication terminal (EG A, EG B).
The components of the OpenScape Office MX are preferably:
Here it is not necessary for the components described above to be physically connected to each other or located within a certain domain.
The communication channel between the CCGW and the XMPP server preferably consists of:
| Number | Date | Country | Kind |
|---|---|---|---|
| 10016050.6 | Dec 2010 | EP | regional |
| 11005594.4 | Jul 2011 | EP | regional |
This application is the United States national phase under 35 U.S.C. §371 of PCT International Application No. PCT/EP2011/006512, filed on Dec. 22, 2011 and claiming priority to European Application No. 10016050.6. filed on Dec. 23, 2010, and European Application No. 11005594.4, filed on Jul. 8, 2011.
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/EP2011/006512 | 12/22/2011 | WO | 00 | 5/29/2013 |
