[Home](./index.md) > [sip.js](./sip.js.md) > [Invitation](./sip.js.invitation.md) > [reject](./sip.js.invitation.reject.md) ## Invitation.reject() method Reject the invitation. Signature: ```typescript reject(options?: InvitationRejectOptions): Promise; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | options | InvitationRejectOptions | Options bucket. | Returns: `Promise` ## Remarks Replies to the INVITE request with a 4xx, 5xx, or 6xx final response. Resolves once the response sent, otherwise rejects. The expectation is that this method is used to reject an INVITE request. That is indeed the case - a call to `progress` followed by `reject` is a typical way to "decline" an incoming INVITE request. However it may also be called after calling `accept` (but only before it completes) which will reject the call and cause `accept` to reject.