1. A method, comprising: obtaining in a user equipment information about a proxy available in a communication system; receiving in the user equipment a list of parameters in response to intending to establish a session using the proxy in the communication system, the list of parameters comprising service-related information; where the information is obtained from, and the list of parameters is received from, a network element, other than the proxy, of an access network of the communication system; selecting at least one parameter from the list; and establishing the session via the proxy using the selected parameter, wherein said receiving of the list of parameters comprises receiving the list using a communication channel of the access network of the communication system where the session is to be established, wherein the list is received in a packet data protocol context message, and wherein the list is extracted from at least one database of the network element of the access network of the communication system.