[Home](./index.md) > [sip.js](./sip.js.md) > [OutgoingRequestMessageOptions](./sip.js.outgoingrequestmessageoptions.md) ## OutgoingRequestMessageOptions interface Outgoing request message options. Signature: ```typescript export interface OutgoingRequestMessageOptions ``` ## Properties | Property | Type | Description | | --- | --- | --- | | [callId](./sip.js.outgoingrequestmessageoptions.callid.md) | string | | | [callIdPrefix](./sip.js.outgoingrequestmessageoptions.callidprefix.md) | string | | | [cseq](./sip.js.outgoingrequestmessageoptions.cseq.md) | number | | | [forceRport](./sip.js.outgoingrequestmessageoptions.forcerport.md) | boolean | | | [fromDisplayName](./sip.js.outgoingrequestmessageoptions.fromdisplayname.md) | string | | | [fromTag](./sip.js.outgoingrequestmessageoptions.fromtag.md) | string | | | [hackViaTcp](./sip.js.outgoingrequestmessageoptions.hackviatcp.md) | boolean | | | [optionTags](./sip.js.outgoingrequestmessageoptions.optiontags.md) | Array<string> | | | [routeSet](./sip.js.outgoingrequestmessageoptions.routeset.md) | Array<string> | | | [toDisplayName](./sip.js.outgoingrequestmessageoptions.todisplayname.md) | string | | | [toTag](./sip.js.outgoingrequestmessageoptions.totag.md) | string | | | [userAgentString](./sip.js.outgoingrequestmessageoptions.useragentstring.md) | string | | | [viaHost](./sip.js.outgoingrequestmessageoptions.viahost.md) | string | |