[Home](./index.md) > [sip.js](./sip.js.md) > [MessageUserAgentClient](./sip.js.messageuseragentclient.md) ## MessageUserAgentClient class MESSAGE UAS. Signature: ```typescript export declare class MessageUserAgentClient extends UserAgentClient implements OutgoingMessageRequest ``` ## Constructors | Constructor | Modifiers | Description | | --- | --- | --- | | [(constructor)(core, message, delegate)](./sip.js.messageuseragentclient._constructor_.md) | | Constructs a new instance of the MessageUserAgentClient class |