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A technique for providing a voice traffic indication in a communication network includes creating a request to set up a communication session in a first network element of the network, the request including a voice traffic indication. The request is then forwarded to a second network element which d

A technique for providing a voice traffic indication in a communication network includes creating a request to set up a communication session in a first network element of the network, the request including a voice traffic indication. The request is then forwarded to a second network element which detects the voice traffic indication in the forwarded request. The second network element then sets up the communication session in response to the request taking into account that voice traffic is to be transferred. The communication channel may include a PDP context. The second network element may be one of an SGSN, a GGSN, or an RNC. The first network element may include an MS.

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1. A method, comprising: setting up a communication session between a first network element and a first network, where the first network is a first packet switched network;creating a request to set up a communication channel in the first network element in order to establish a bearer on a second net

1. A method, comprising: setting up a communication session between a first network element and a first network, where the first network is a first packet switched network;creating a request to set up a communication channel in the first network element in order to establish a bearer on a second network for said communication session, where the second network is a second, different packet switched network;including a voice traffic indication in said request, said voice traffic indication represented by a parameter in the request and said voice traffic indication indicating that the communication channel is to be used only for voice traffic;forwarding the request from the first network element to a second network element in said second network; andreceiving a message indicating whether the request has been admitted based on statistical characteristics of voice traffic. 2. The method of claim 1, further comprising: forwarding the voice indication to a third network element in the second network from the second network element in the second network. 3. The method of claim 1, where the communication channel comprises a packet data protocol context. 4. The method of claim 1, where the communication session comprises an interne protocol multimedia subsystem session. 5. The method of claim 1, where the first network comprises an internet protocol multimedia subsystem network. 6. The method of claim 1, where the second network comprises a core network. 7. The method of claim 1, where the second network comprising a radio access network. 8. The method of claim 1, where the second network element in the second network comprises a serving general packet radio service support node. 9. The method of claim 1, where the third network element in the second network comprises a gateway general packet radio service support node. 10. The method of claim 1, where the second network element comprises a radio network controller. 11. The method of claim 1, where the first network element comprises a mobile station. 12. The method of claim 1, where the second network element in the second network comprises a serving general packet radio service support node coupled to a gateway general packet radio service support node. 13. A method, comprising: setting up a communication session between a first network element and a first network, where the first network is a first packet switched network;creating a request to modify a communication channel setting in order to establish a bearer on a second network for the communication session, where the second network is a second, different packet switched network;including a voice traffic indication in said request, said voice traffic indication represented by a parameter in the request and said voice traffic indication indicating that the communication channel is to be used only for voice traffic;forwarding the request from the first network element to a second network element in the second network; andreceiving a message indicating whether the request has been admitted based on statistical characteristics of voice traffic. 14. A system, comprising: a setup unit configured to set up a communication session between a first network element and a first network, where the first network is a first packet switched network;a request unit configured to create a request to set up a communication channel in the first network element in order to establish a bearer on a second network for said communication session and to include a voice traffic indication in said request,where the second network is a second, different packet switched network,said voice traffic indication represented by a parameter in the request and said voice traffic indication indicating that the communication channel is to be used only for voice traffic; anda forwarder unit configured to forward the request from the first network element to a second network element in said second network,where the system is further configured to receive a message indicating whether the request has been admitted based on statistical characteristics of voice traffic. 15. The system of claim 14, further comprising: a second forwarder unit configured to forward the voice indication to a third network element in the second network from the second network element in the second network. 16. The system of claim 15, further comprising: a detector configured to detect the voice traffic indication in the forwarded request by the third network element in the second network. 17. The system of claim 15, wherein the forwarded voice indication is included in admission control of bearers in the third network element in the second network. 18. The system of claim 14, further comprising: a detector configured to detect the voice traffic indication in the forwarded request by the second network element in the second network. 19. The system according to claim 14, further comprising: a second setup unit configured to set up the communication session by the second network element in the second network in response to said request. 20. The system of claim 14, wherein the forwarded voice indication is included in admission control of bearers in the second network element in the second network. 21. An apparatus, comprising: a receiver configured to receive a request to set up a communication channel communicating in a session of a first network in order to establish a bearer on a second network for said session, where the first network is a first packet switched network and the second network is a second, different packet switched network; anda detector configured to detect that the requested bearer establishment is for voice traffic, said requested bearer establishment including a voice traffic indication represented by a parameter and said voice traffic indication indicating that the communication channel is to be used only for voice traffic,where the apparatus is configured to determine whether to admit said request based on statistical characteristics of voice traffic and to send a decision message indicating whether the request has been admitted,wherein the apparatus is configured to be contained within the second network. 22. The apparatus of claim 21, wherein the detector comprises one of a radio network controller, a gateway general packet radio service support node, and a serving general packet radio service support node. 23. A system, comprising: setup means for setting up a communication session between a first network element and a first network, where the first network is a first packet switched network;creation means for creating a request to set up a communication channel in the first network element in order to establish a bearer on a second network for said communication session, where the second network is a second, different packet switched network, and for including a voice traffic indication in said request, said voice traffic indication represented by a parameter in the request and said voice traffic indication indicating that the communication channel is to be used-only for voice traffic;forwarder means for forwarding the request from the first network element to a second network element in said second network; andmeans for receiving a message indicating whether the request has been admitted based on statistical characteristics of voice traffic. 24. An apparatus, comprising: receiving means for receiving a request to set up a communication channel in a first network element communicating in a session of a first network in order to establish a bearer on a second network for said session, where the first network is a first packet switched network and the second network is a second, different packet switched network;detecting means for detecting that the requested bearer establishment is for voice traffic, said requested bearer establishment including a voice traffic indication represented by a parameter and said voice traffic indication indicating that the communication channel is to be used only for voice traffic;means for determining whether to admit said request based on statistical characteristics of voice traffic andmeans for sending a decision message indicating whether the request has been admitted. 25. An apparatus, comprising: a setting up unit configured to set up a communication session between a first network element and a first network, where the first network is a first packet switched network;a creating unit configured to create a request to set up a communication channel in the first network element in order to establish a bearer on a second network for said communication session, where the second network is a second, different packet switched network;a voice traffic indicator unit configured to include a voice traffic indication in said request, said voice traffic indication represented by a parameter in the request and said voice traffic indication indicating that the communication channel is to be used only for voice traffic; anda forwarding unit configured to forward the request from the first network element to a second network element in said second network,where the apparatus is configured to receive a message indicating whether the request has been admitted based on statistical characteristics of voice traffic. 26. The apparatus of claim 25, further comprising: another forwarding unit forwarder configured to forward the voice indication to a third network element in the second network from the second network element in the second network. 27. The apparatus of claim 26, further comprising: a detector configured to detect the voice traffic indication in the forwarded request by the third network element in the second network. 28. The apparatus of claim 26, further comprising: an including unit configured to include the forwarded voice indication in admission control of bearers in the third network element in the second network. 29. The apparatus of claim 25, further comprising: a detector configured to detect the voice traffic indication in the forwarded request by the second network element in the second network. 30. The apparatus of claim 25, further comprising: a setting up unit configured to set up the communication channel by the second network element in the second network in response to said request. 31. The apparatus of claim 25, further comprising: an including unit configured to include a forwarded voice indication in admission control of bearers in the second network element in the second network. 32. The apparatus of claim 25, further comprising: a configuring unit to configure the communication channel to comprise a packet data protocol context. 33. The apparatus of claim 25, further comprising: a configuring unit to configure the communication session to comprise an internet protocol multimedia subsystem session. 34. The apparatus of claim 25, further comprising: a configuring unit to configure the first network to comprise an internet protocol multimedia subsystem network. 35. The apparatus of claim 25, further comprising: a configuring unit to configure the second network to comprise a core network. 36. The apparatus of claim 25, further comprising: a configuring unit to configure the second network to comprise a radio access network. 37. The apparatus of claim 25, further comprising: a configuring unit to configure the second network element in the second network to comprise a serving general packet radio service support node. 38. The apparatus of claim 25, further comprising: a configuring unit to configure the third network element in the second network to comprise a gateway general packet radio service support node. 39. The apparatus of claim 25, further comprising: a configuring unit to configure the second network element to comprise a radio network controller. 40. The apparatus of claim 25, further comprising: a configuring unit to configure the first network element to comprise a mobile station. 41. The apparatus of claim 25, further comprising: a configuring unit to configure the second network element in the second network to comprise a serving general packet radio service support node coupled to a gateway general packet radio service support node. 42. An apparatus, comprising: means for setting up a communication session between a first network element and a first network, where the first network is a first packet switched network;means for creating a request to set up a communication channel in the first network element in order to establish a bearer on a second network for said communication session, where the second network is a second, different packet switched network;means for including a voice traffic indication in said request, said voice traffic indication represented by a parameter in the request and said voice traffic indication indicating that the communication channel is to be used only for voice traffic;means for forwarding the request from the first network element to a second network element in said second network; andmeans for receiving a message indicating whether the request has been admitted based on statistical characteristics of voice traffic. 43. The apparatus of claim 42, wherein the apparatus is configured for a terminal in a communication network. 44. An apparatus, comprising: a setting up unit configured to set up a communication session between a first network element and a first network, where the first network is a first packet switched network;a creating unit configured to create a request to modify a communication channel setting in order to establish a bearer on a second network for the communication session, where the second network is a second, different packet switched network, and configured to include a voice traffic indication in said request, said voice traffic indication represented by a parameter in the request and said voice traffic indication indicating that the communication channel is to be used only for voice traffic; anda forwarding unit configured to forward the request from the first network element to a second network element in the second network,where the apparatus is configured to receive a message indicating whether the request has been admitted based on statistical characteristics of voice traffic. 45. An apparatus, comprising: setting up means for setting up a communication session between a first network element and a first network, where the first network is a first packet switched network;creating means for creating a request to modify a communication channel setting in order to establish a bearer on a second network for the communication session, where the second network is a second, different packet switched network, and for including a voice traffic indication in said request, said voice traffic indication represented by a data or signaling parameter in the request and said voice traffic indication indicating that the communication channel is to be used only for voice traffic;forwarding means for forwarding the request from the first network element to a second network element in the second network; andmeans for receiving a message indicating whether the request has been admitted based on statistical characteristics of voice traffic. 46. A method comprising: receiving, at a network element of a second network, a forwarded request to set up a communication channel communicating in a session of a first network in order to establish a bearer on the second network for said session, where the first network is a first packet switched network and the second network is a second, different packet switched network;detecting whether the requested bearer establishment is for voice traffic only by determining whether said requested bearer establishment comprises a voice traffic indication, where the voice traffic indication is represented by a parameter;determining whether to admit said request based on statistical characteristics of voice traffic; andsending a decision message indicating whether the request has been admitted. 47. The method of claim 46, further comprising, in response to receiving said request, setting up the communication channel configured for voice traffic in the second network. 48. The method of claim 46, further comprising, including the voice indication in admission control of bearers in the second network element in the second network. 49. A non-transitory program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine to perform actions comprising: setting up a communication session between a first network element and a first network, where the first network is a first packet switched network;creating a request to set up a communication session in the first network element in order to establish a bearer on a second network for said communication session, where the second network is a second, different packet switched network;including a voice traffic indication in said request, said voice traffic indication represented by a parameter in the request and said voice traffic indication indicating that the communication channel is to be used only for voice traffic;forwarding the request from the first network element to a second network element in the second network; andreceiving a message indicating whether the request has been admitted based on statistical characteristics of voice traffic. 50. A non-transitory program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine to perform actions comprising: setting up a communication session between a first network element and a first network, where the first network is a first packet switched network;creating a request to modify a communication session in the first network element in order to establish a bearer on a second network for said communication session, where the second network is a second, different packet switched network;including a voice traffic indication in said request, said voice traffic indication represented by a parameter in the request and said voice traffic indication indicating that the communication channel is to be used only for voice traffic;forwarding the request from the first network element to a second network element in the second network; andreceiving a message indicating whether the request has been admitted based on statistical characteristics of voice traffic.