A system for communicating messages comprises a session server and a messaging server. The session server receives a call from a first client. The call is intended for a second client. The messaging server is coupled to the session server and receives the call from the session server. The messaging server further communicates a first-text message to an instant messaging client associated with the second client in response to receiving the call. The messaging server further receives a second-text message communicated by the instant messaging client. The second-text message is responsive to the first-text message. The messaging server further converts the second-text message into a voice message and communicates the voice message to the first client.