There is disclosed a communication device. The communications device includes an audio head unit for generating audio from an audio source, an intercom system for receiving and broadcasting intercom audio over a channel already used for the source audio thereby creating a combined audio, a plurality of headsets to generate playback audio, and where the source audio is temporarily lowered within the combined audio during broadcast of the intercom audio.

The present disclosure provides a data processing method, an outdoor unit (IDU), an indoor unit (ODU), and a computer-readable storage medium. The method performed by an IDU communicating with an ODU may include: receiving an operation status signal from a user-side device; generating a Subscriber Line Interface Circuit (SLIC) event message corresponding to the operation status signal according to the operation status signal; generating a first SLIC control flow according to the SLIC event message, where the first SLIC control flow carries first label information corresponding to the SLIC event message; and sending the first SLIC control flow to the ODU, where the first label information indicates the SLIC event message which is processible to a voice protocol stack.

The present disclosure provides a data processing method, an outdoor unit (IDU), an indoor unit (ODU), and a computer-readable storage medium. The method performed by an IDU communicating with an ODU may include: receiving an operation status signal from a user-side device; generating a Subscriber Line Interface Circuit (SLIC) event message corresponding to the operation status signal according to the operation status signal; generating a first SLIC control flow according to the SLIC event message, where the first SLIC control flow carries first label information corresponding to the SLIC event message; and sending the first SLIC control flow to the ODU, where the first label information indicates the SLIC event message which is processible to a voice protocol stack.