A method performed by a transition device for enabling communication of data between a remote radio unit and a central baseband unit in a wireless network, the method comprising: - detecting a first interface configuration used by the remote radio unit, - detecting a second interface configuration used by the baseband unit, - configuring one or more interface functions, based on the detected first and second interface configurations, the one or more interface functions being selected from a set of predefined interface functions associated with different interface configurations, - establishing at least one data flow between the remote radio unit and the central baseband unit over the transition device, and - performing conversion between the first interface configuration and the second interface configuration for data communicated in the at least one data flow, using the selected one or more interface functions, wherein the conversion between the first interface configuration and an intermediate interface configuration adapted for a packet network is performed by a first part of the transition device, and conversion between the intermediate interface configuration and the second interface configuration is performed by a second part of the transition device, wherein the data is transported over the packet network between said first and second parts (600A,B) of the transition device, using the intermediate interface configuration, characterized in that the remote radio unit uses a Common Public Radio interface (CPRI) as the first interface configuration and the central baseband unit uses CPRI as the second interface configuration, and the intermediate interface for conveying compressed data for communication over the packet network 600C comprises any interface out of: C1, C2, or either of C1 and C2, wherein the first part performs the conversion between CPRI used by the remote radio unit and any one out of: C1, C2, or either of C1 and C2, and wherein the second part performs the conversion between any one out of: the C1, C2, or either of C1 and C2, and CPRI used by the central baseband unit. - detecting a first interface configuration used by the remote radio unit, - detecting a second interface configuration used by the baseband unit, - configuring one or more interface functions, based on the detected first and second interface configurations, the one or more interface functions being selected from a set of predefined interface functions associated with different interface configurations, - establishing at least one data flow between the remote radio unit and the central baseband unit over the transition device, and - performing conversion between the first interface configuration and the second interface configuration for data communicated in the at least one data flow, using the selected one or more interface functions, wherein the conversion between the first interface configuration and an intermediate interface configuration adapted for a packet network is performed by a first part of the transition device, and conversion between the intermediate interface configuration and the second interface configuration is performed by a second part of the transition device, wherein the data is transported over the packet network between said first and second parts (600A,B) of the transition device, using the intermediate interface configuration, characterized in that the remote radio unit uses a Common Public Radio interface (CPRI) as the first interface configuration and the central baseband unit uses CPRI as the second interface configuration, and the intermediate interface for conveying compressed data for communication over the packet network 600C comprises any interface out of: C1, C2, or either of C1 and C2, wherein the first part performs the conversion between CPRI used by the remote radio unit and any one out of: C1, C2, or either of C1 and C2, and wherein the second part performs the conversion between any one out of: the C1, C2, or either of C1 and C2, and CPRI used by the central baseband unit.