[Home](./index.md) > [sip.js](./sip.js.md) > [NonInviteServerTransaction](./sip.js.noninviteservertransaction.md) > [(constructor)](./sip.js.noninviteservertransaction._constructor_.md) ## NonInviteServerTransaction.(constructor) Constructor. After construction the transaction will be in the "trying": state and the transaction `id` will equal the branch parameter set in the Via header of the incoming request. https://tools.ietf.org/html/rfc3261\#section-17.2.2 Signature: ```typescript constructor(request: IncomingRequestMessage, transport: Transport, user: ServerTransactionUser); ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | request | IncomingRequestMessage | Incoming Non-INVITE request from the transport. | | transport | Transport | The transport. | | user | ServerTransactionUser | The transaction user. |