[Home](./index.md) > [sip.js](./sip.js.md) > [SubscriptionDialog](./sip.js.subscriptiondialog.md) > [subscriptionExpiresInitial](./sip.js.subscriptiondialog.subscriptionexpiresinitial.md) ## SubscriptionDialog.subscriptionExpiresInitial property Signature: ```typescript readonly subscriptionExpiresInitial: number; ```