[Home](./index.md) > [sip.js](./sip.js.md) > [UserAgentCore](./sip.js.useragentcore.md) > [invite](./sip.js.useragentcore.invite.md) ## UserAgentCore.invite() method Send INVITE. Signature: ```typescript invite(request: OutgoingRequestMessage, delegate?: OutgoingInviteRequestDelegate): OutgoingInviteRequest; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | request | OutgoingRequestMessage | Outgoing request. | | delegate | OutgoingInviteRequestDelegate | Request delegate. | Returns: `OutgoingInviteRequest`