[Home](./index.md) > [sip.js](./sip.js.md) > [SubscriptionOptions](./sip.js.subscriptionoptions.md) ## SubscriptionOptions interface Options for [Subscription](./sip.js.subscription.md) constructor. Signature: ```typescript export interface SubscriptionOptions ``` ## Properties | Property | Type | Description | | --- | --- | --- | | [delegate](./sip.js.subscriptionoptions.delegate.md) | SubscriptionDelegate | |