[Home](./index.md) > [sip.js](./sip.js.md) > [Publisher](./sip.js.publisher.md) ## Publisher class A publisher publishes a publication (outgoing PUBLISH). Signature: ```typescript export declare class Publisher extends EventEmitter ``` ## Constructors | Constructor | Modifiers | Description | | --- | --- | --- | | [(constructor)(userAgent, targetURI, eventType, options)](./sip.js.publisher._constructor_.md) | | Constructs a new instance of the Publisher class. | ## Properties | Property | Modifiers | Type | Description | | --- | --- | --- | --- | | [state](./sip.js.publisher.state.md) | | PublisherState | The publication state. | | [stateChange](./sip.js.publisher.statechange.md) | | Emitter<PublisherState> | Emits when the publisher state changes. | ## Methods | Method | Modifiers | Description | | --- | --- | --- | | [dispose()](./sip.js.publisher.dispose.md) | | Destructor. | | [publish(content, options)](./sip.js.publisher.publish.md) | | Publish. | | [unpublish(options)](./sip.js.publisher.unpublish.md) | | Unpublish. |