[Home](./index.md) > [sip.js](./sip.js.md) > [OutgoingRequestMessage](./sip.js.outgoingrequestmessage.md) > [cseq](./sip.js.outgoingrequestmessage.cseq.md) ## OutgoingRequestMessage.cseq property Signature: ```typescript cseq: number; ```