[Home](./index.md) > [sip.js](./sip.js.md) > [UserAgentOptions](./sip.js.useragentoptions.md) > [delegate](./sip.js.useragentoptions.delegate.md) ## UserAgentOptions.delegate property Delegate for [UserAgent](./sip.js.useragent.md). Signature: ```typescript delegate?: UserAgentDelegate; ```