diff --git a/src/call/call_audio.c b/src/call/call_audio.c
index f18f0c1e..2500e03e 100644
--- a/src/call/call_audio.c
+++ b/src/call/call_audio.c
@@ -561,6 +561,12 @@ void call_audio_playback_progress(uint64_t call_id, uint64_t epoch, uint64_t pos
     pthread_mutex_unlock(&g_mtx);
 }
 
+void call_audio_suspend_device(uint64_t call_id, uint64_t epoch) {
+    pthread_mutex_lock(&g_mtx);
+    if (g_active && call_id == g_call_id && g_vj) call_jitter_suspend_device(g_vj, epoch);
+    pthread_mutex_unlock(&g_mtx);
+}
+
 int call_audio_get_clock(uint64_t call_id, int64_t now_us, struct call_clock_snapshot* out) {
     if (!out) { DEBUG_ERROR(DEBUG_CATEGORY_CALL, "call clock missing output"); return -1; }
     memset(out, 0, sizeof(*out)); out->pts_us = -1;
diff --git a/src/call/call_audio.h b/src/call/call_audio.h
index ddd74957..8a609035 100644
--- a/src/call/call_audio.h
+++ b/src/call/call_audio.h
@@ -72,6 +72,8 @@ void call_audio_on_media(struct UTUN_INSTANCE* inst, uint64_t call_id,
 void call_audio_playback_progress(uint64_t call_id, uint64_t epoch, uint64_t position,
                                   int64_t at_us, int64_t now_us, int measured);
 int call_audio_get_clock(uint64_t call_id, int64_t now_us, struct call_clock_snapshot* out);
+/* Playback worker: старый аппаратный якорь недействителен до progress нового выхода. PCM/JB сохраняются. */
+void call_audio_suspend_device(uint64_t call_id, uint64_t epoch);
 /* Любой поток: диагностический снимок без потребления событий CALL_STATS. */
 int call_audio_get_diagnostics(uint64_t call_id, struct call_jitter_diagnostics* out);