A system, methods, nodes, and computer programs for transcribing of a communication session in a communication network are described. The communication network includes a control server for controlling the communication session, wherein the communication session is established between a user equipment and a remote end. The method includes that the control server receives a service indication indicating that a transcript of the communication session is requested and sends a transcription request for the communication session to a policy controller of the communication network. The policy controller determines at least one policy rule corresponding to the received transcription request and sends the determined at least one policy rule to a packet gateway node of the communication network. The packet gateway node provides, based on the at least one policy rule, a transcription or transcript chunk of at least one speech stream related to the communication session.