Gateway for connecting telecommunications networks and a corresponding method
View Patent ↗The invention relates to a gateway for connecting telecommunications networks, and to an associated method, in which a user channel data converter is connected via at least one additional user channel data interface to a switching center, and a signaling channel data converter is inserted between an already existing user/signaling channel data interface such that signaling information (SD(cic 4 )) which is transmitted on this data interface is filtered out for the additional user channel data interface. This results in a connection for a packet-switching telecommunications network without any major intervention in the network structure of a line-switching telecommunications network.
1. A gateway for interconnection of a line-switching telecommunications network and a packet-switching telecommunications network, comprising: a user channel data converter to convert user channel data between a line-switching format and a packet-switching format; and a signaling channel data converter to convert signaling data between the line-switching format and a packet-switching format, wherein
the user channel data converter is connected via at least one additional line-switching user/signaling channel data interface for transmission of user channel data to a switching center in the line-switching telecommunications network, and via a packet-switching data interface to the packet-switching telecommunications network, and
the signaling channel data converter is connected in a predetermined user/signaling channel data interface by which signaling information which is transmitted on the user/signaling channel data interface for the additional user/signaling channel data interface is filtered out, and the signaling channel data converter actuates the user channel data converter on the basis of the filtered-out signaling information.
2. The gateway as claimed in patent claim 1 , wherein
the signaling channel data converter actuates the user channel data converter via a signaling channel data interface.
3. The gateway as claimed in patent claim 1 , wherein
the signaling channel data converter is connected via a signaling data interface directly to the packet-switching telecommunications network, and allows a direct path search in the packet-switching telecommunications network.
4. The gateway as claimed in claim 1 , wherein
the line-switching format uses the central signaling system no. 7, and the packet-switching format uses the Internet Protocol.
5. The gateway as claimed in claim 2 , wherein
the specific signaling data interface represents an ETHERNET data interface, and uses the Media Gateway Control Protocol as the format.
6. The gateway as claimed in claim 1 , wherein
the signaling channel data converter passes on all the user channel data and non-relevant signaling data transparently.
7. The gateway as claimed in claim 1 , wherein
the signaling channel data converter is based on redundant design.
8. The gateway as claimed in claim 1 , wherein
the user channel data converter is based on redundant design.
9. The gateway as claimed in claim 1 , wherein
the line-switching user/signaling channel data interfaces represent PCM30 data interfaces.
10. A method for interconnecting a line-switching telecommunications network and a packet-switching telecommunications network comprising:
a) transmitting user channel data via a line-switching user/signaling channel data interface;
b) transmitting signaling information for the additional line-switching user/signaling channel data interface via a predetermined user/signaling channel data interface;
c) filtering out and evaluating the transmitted signaling information; and
d) actuating a user channel data converter to convert the transmitted user channel data from a line-switching format to a packet-switching format as a function of the evaluated additional signaling information.
11. The method as claimed in patent claim 10 , wherein
during the filtering process the user channel data and non-relevant signaling data is passed on transparently in the user/signaling channel data interface.
12. The method as claimed in claim 10 , wherein
the evaluating of the signaling information includes conversion to a Media Gateway Control Protocol.
13. The method as claimed in claim 10 , wherein
the evaluating of the signaling information includes conversion to an H.323 protocol.
14. The method as claimed in claim 10 , wherein
the packet-switching format uses an Internet Protocol, and the line-switching format uses a protocol in accordance with the central signaling system no. 7.