[Home](./index.md) > [sip.js](./sip.js.md) > [IncomingRequestWithSubscription](./sip.js.incomingrequestwithsubscription.md) > [subscription](./sip.js.incomingrequestwithsubscription.subscription.md) ## IncomingRequestWithSubscription.subscription property If subscription state is not "terminated", then the subscription. Otherwise undefined. Signature: ```typescript readonly subscription?: Subscription; ```