diff --git a/extensions/voice-call/src/manager.restore.test.ts b/extensions/voice-call/src/manager.restore.test.ts
index 55ac14ab33b9..a7c7a064fab8 100644
--- a/extensions/voice-call/src/manager.restore.test.ts
+++ b/extensions/voice-call/src/manager.restore.test.ts
@@ -305,6 +305,42 @@ describe("CallManager verification on restore", () => {
     expect(hangupCall.reason).toBe("timeout");
   });
 
+  it.each(["speaking", "listening"] as const)(
+    "uses call start as max-duration anchor for restored live %s calls without answeredAt",
+    async (state) => {
+      vi.useFakeTimers();
+      const now = new Date("2026-03-17T03:07:00Z").getTime();
+      vi.setSystemTime(now);
+      const startedAt = now - 290_000;
+      const { manager, provider, storePath } = await initializeManager({
+        callOverrides: {
+          callId: `call-${state}`,
+          providerCallId: `provider-${state}`,
+          state,
+          startedAt,
+          answeredAt: undefined,
+        },
+        configOverrides: { maxDurationSeconds: 300 },
+      });
+
+      const activeCall = requireSingleActiveCall(manager);
+      expect(activeCall.state).toBe(state);
+      expect(activeCall.answeredAt).toBe(startedAt);
+      expect(
+        loadActiveCallsFromStore(storePath).activeCalls.get(activeCall.callId)?.answeredAt,
+      ).toBe(startedAt);
+
+      await vi.advanceTimersByTimeAsync(9_000);
+      expect(manager.getActiveCalls()).toHaveLength(1);
+      expect(provider.hangupCalls).toHaveLength(0);
+
+      await vi.advanceTimersByTimeAsync(1_100);
+      expect(manager.getActiveCalls()).toHaveLength(0);
+      const hangupCall = requireSingleHangupCall(provider);
+      expect(hangupCall.reason).toBe("timeout");
+    },
+  );
+
   it("restores dedupe keys from terminal persisted calls so replayed webhooks stay ignored", async () => {
     const storePath = createTestStorePath();
     const persisted = makePersistedCall({
diff --git a/extensions/voice-call/src/manager.ts b/extensions/voice-call/src/manager.ts
index 7e296e1bf4af..3e04ed38e925 100644
--- a/extensions/voice-call/src/manager.ts
+++ b/extensions/voice-call/src/manager.ts
@@ -47,6 +47,13 @@ function incrementRestoreStatusCount(
   counts.set(key, (counts.get(key) ?? 0) + 1);
 }
 
+function resolveRestoredMaxDurationAnchor(call: CallRecord): number | undefined {
+  return (
+    call.answeredAt ??
+    (call.state === "speaking" || call.state === "listening" ? call.startedAt : undefined)
+  );
+}
+
 function resolveDefaultStoreBase(config: VoiceCallConfig, storePath?: string): string {
   const rawOverride = storePath?.trim() || config.store?.trim();
   if (rawOverride) {
@@ -126,11 +133,12 @@ export class CallManager {
       }
     }
 
-    // Restart max-duration timers for restored calls that are past the answered state
+    // Restart max-duration timers for restored calls that are past the answered/live state.
     let skippedAlreadyElapsedTimers = 0;
     for (const [callId, call] of verified) {
-      if (call.answeredAt && !TerminalStates.has(call.state)) {
-        const elapsed = Date.now() - call.answeredAt;
+      const maxDurationAnchor = resolveRestoredMaxDurationAnchor(call);
+      if (maxDurationAnchor !== undefined && !TerminalStates.has(call.state)) {
+        const elapsed = Date.now() - maxDurationAnchor;
         const maxDurationMs = resolveVoiceCallSecondsTimerDelayMs(this.config.maxDurationSeconds);
         if (elapsed >= maxDurationMs) {
           // Already expired — remove instead of keeping
@@ -141,6 +149,12 @@ export class CallManager {
           skippedAlreadyElapsedTimers += 1;
           continue;
         }
+        if (call.answeredAt === undefined) {
+          // Twilio streams can restore directly in speaking/listening without an
+          // answered webhook; anchoring at startedAt preserves bounded duration.
+          call.answeredAt = maxDurationAnchor;
+          persistCallRecord(this.storePath, call);
+        }
         startMaxDurationTimer({
           ctx: this.getContext(),
           callId,