[Home](./index.md) > [sip.js](./sip.js.md) > [MessagerOptions](./sip.js.messageroptions.md) ## MessagerOptions interface Options for [Messager](./sip.js.messager.md) constructor. Signature: ```typescript export interface MessagerOptions ``` ## Properties | Property | Type | Description | | --- | --- | --- | | [extraHeaders](./sip.js.messageroptions.extraheaders.md) | Array<string> | Array of extra headers added to the MESSAGE. | | [params](./sip.js.messageroptions.params.md) | {
fromDisplayName?: string;
fromTag?: string;
fromUri?: string | URI;
toDisplayName?: string;
toUri?: string | URI;
} | |