Method and apparatus for transmitting voice data over various types of networks
First Claim
Patent Images
1. A method for transmitting voice data, the method comprising the steps of:
- setting up a connection by using a signaling protocol for circuit-switched transmission of user data from a circuit-switched network to a packet transmission network;
transmitting the user data via a transmission link of the circuit-switched network to the packet transmission network;
distributing the user data to data packets;
forwarding the user data via a packet transmission network if the user data are typical of voice transmission;
forwarding no user data via the packet transmission network if the user data are typical of silence intervals, wherein user data that is redundant between the circuit-switched network and the packet transmission network is not transmitted;
determining, via at least one signaling unit included in the connection set up, the type of connection; and
checking for silence intervals only if a voice transmission link has been set up between the circuit-switched network and the packet transmission network.
5 Assignments
0 Petitions
Accused Products
Abstract
A method for transmitting voice data over various types of networks wherein user data are transmitted via a transmission link of a circuit-switched network and are distributed to data packets and forwarded via a packet transmission network if the user data are typical of voice transmission. If, in contrast, the user data are typical of silence intervals, no user data are forwarded via the packet transmission network. The type of connection is determined in a signaling unit.
9 Citations
17 Claims
-
1. A method for transmitting voice data, the method comprising the steps of:
-
setting up a connection by using a signaling protocol for circuit-switched transmission of user data from a circuit-switched network to a packet transmission network;
transmitting the user data via a transmission link of the circuit-switched network to the packet transmission network;
distributing the user data to data packets;
forwarding the user data via a packet transmission network if the user data are typical of voice transmission;
forwarding no user data via the packet transmission network if the user data are typical of silence intervals, wherein user data that is redundant between the circuit-switched network and the packet transmission network is not transmitted;
determining, via at least one signaling unit included in the connection set up, the type of connection; and
checking for silence intervals only if a voice transmission link has been set up between the circuit-switched network and the packet transmission network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method for receiving voice data, the method comprising the steps of:
-
receiving user data from a circuit-switched network in data packets in a packet transmission network;
depacketizing the user data;
forwarding the user data via a transmission link of the circuit-switched data transmission network;
indicating, in the data packets and via a value of at least one bit position, that further data packets are following; and
indicating, via a different value of the bit position, that a silence interval is detected, wherein user data that is redundant between the circuit-switched network and the packet transmission network is not transmitted. - View Dependent Claims (12, 13)
-
-
14. An interworking unit, comprising:
-
a conversion unit which processes user data, transmitted via a transmission link of a circuit-switched data transmission network, to data packets and forwards the data packets via a packet transmission network during normal voice transmission; and
a control unit which does not forward any user data via the packet transmission network when the user data is affiliated with silence intervals.
-
-
15. An interworking unit for transmitting voice data, comprising:
-
a conversion unit which depacketizes data packets with user data, transmitted via a packet transmission network, and forwards the user data via a transmission link of a circuit-switched data transmission network; and
a control unit which determines as a function of the value of a bit position in the data packets that a silence interval is detected in which no data packets are transmitted.
-
-
16. A program with an instruction sequence, upon execution of the instruction sequence by a processor a method is carried out which includes the steps of:
-
setting up a connection by using a signaling protocol for circuit-switched transmission of user data from a circuit-switched network to a packet transmission network;
transmitting the user data via a transmission link of the circuit-switched network to the packet transmission network;
distributing the user data to data packets;
forwarding the user data via a packet transmission network if the user data are typical of voice transmission;
forwarding no user data via the packet transmission network if the user data are typical of silence intervals, wherein user data that is redundant between the circuit-switched network and the packet transmission network is not transmitted;
determining, via at least one signaling unit included in the connection set up, the type of connection; and
checking for silence intervals only if a voice transmission link has been set up between the circuit-switched network and the packet transmission network.
-
-
17. An exchange unit, comprising:
-
an access unit which signals in accordance with a protocol for circuit-switched data networks communicating to packet transmission networks;
a control unit, coupled to the access unit, wherein said control unit determines types of user data that are transmitted between the circuit-switched data networks and the packet transmission networks and transmits the user data determined to be a normal operating mode; and
an interworking unit, coupled to said control unit, wherein said interworking unit blocks transmission of user data from the circuit-switched data networks to the packet transmission networks when the user data is determined to be a silence interval.
-
Specification