[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Debugger](./puppeteer.protocol.debugger.md) > [CallFrame](./puppeteer.protocol.debugger.callframe.md) > [callFrameId](./puppeteer.protocol.debugger.callframe.callframeid.md) ## Protocol.Debugger.CallFrame.callFrameId property Call frame identifier. This identifier is only valid while the virtual machine is paused. Signature: ```typescript callFrameId: CallFrameId; ```