diff --git a/tests/test_call.c b/tests/test_call.c
index 69d93557..9832584e 100644
--- a/tests/test_call.c
+++ b/tests/test_call.c
@@ -12,6 +12,7 @@
 #include "chat_core.h"
 #include "chat_sync.h"
 #include "chat_event.h"
+#include "chat_setting.h"
 #include "member_sync.h"
 #include "../call/call.h"
 #include "../dm/dm_core.h"
@@ -61,7 +62,7 @@ enum call_phase {
     P_WAIT_ACCEPTED,     /* обе ACTIVE */
     P_SEND_MEDIA,        /* A: call_send_media (тестовый Opus-кадр) */
     P_WAIT_MEDIA,        /* B: media_recv_cb получил кадр */
-    P_VIDEO_CONFIG, P_VIDEO_SEND, P_VIDEO_HOLD, P_VIDEO_BUSY, P_VIDEO_RESUME, P_VIDEO_SWITCH, P_VIDEO_SWITCH_WAIT,
+    P_VIDEO_CONFIG, P_VIDEO_SEND, P_VIDEO_HOLD, P_VIDEO_BUSY, P_VIDEO_RESUME, P_VIDEO_RANGE_WAIT, P_VIDEO_SWITCH, P_VIDEO_SWITCH_WAIT,
     P_HANGUP,            /* A: call_hangup */
     P_WAIT_ENDED1,       /* обе ENDED */
     P_CALL2_START,       /* A: call_start (2-й звонок) */
@@ -497,6 +498,11 @@ static void call_tick(void* arg) {
         }
         break;
     case P_VIDEO_CONFIG: {
+        if (strcmp(chat_setting_get(A, "call_video_bitrate_range_kbps"), "300:4000")
+            || chat_setting_set(A, "call_video_bitrate_range_kbps", "4000:300") != -2
+            || strcmp(chat_setting_get(A, "call_video_bitrate_range_kbps"), "300:4000")) {
+            DEBUG_ERROR(DEBUG_CATEGORY_CALL, "video range default/atomic validation failed"); t->result = 2; break;
+        }
         for (unsigned i = 4; i < sizeof(g_video_data); i++) g_video_data[i] = (uint8_t)i;
         struct call_video_caps caps = {0};
         caps.encode[0] = caps.encode[1] = caps.decode[0] = caps.decode[1] = (struct call_video_limit){1280, 720, 30, 1280 * 720 * 30};
@@ -528,15 +534,27 @@ static void call_tick(void* arg) {
     case P_VIDEO_RESUME:
         if (!g_video_frames || !g_rate_commands) break;
         if (g_video_error) { t->result = 2; break; }
+        // Настройка меняется при незавершённой команде; старый ACK остаётся действительным.
+        if (chat_setting_set(A, "call_video_bitrate_range_kbps", "300:350")) { t->result = 2; break; }
         if (g_rate_commands != 1 || g_rate_generation != 1 || g_rate_bps != 400000
             || call_video_rate_applied(A, t->call_id, 2, g_rate_request, g_rate_bps) != -1
             || call_video_rate_applied(A, t->call_id, 1, g_rate_request + 1, g_rate_bps) != -1
             || call_video_rate_applied(A, t->call_id, 1, g_rate_request, g_rate_bps)) {
             fprintf(stderr, "video rate command/completion mismatch\n"); t->result = 2; break;
         }
+        t->phase = P_VIDEO_RANGE_WAIT; break;
+    case P_VIDEO_RANGE_WAIT:
+        if (g_rate_commands < 2) break;
+        if (g_rate_commands != 2 || g_rate_generation != 1 || g_rate_bps != 350000
+            || call_video_rate_applied(A, t->call_id, 1, g_rate_request, g_rate_bps)) {
+            DEBUG_ERROR(DEBUG_CATEGORY_CALL, "video live range change did not converge to 350kbps"); t->result = 2; break;
+        }
+        if (chat_setting_set(A, "call_video_bitrate_range_kbps", "500:1000")
+            || call_video_configure_rate(A, t->call_id, 2, 350000, 400000) != -1
+            || chat_setting_set(A, "call_video_bitrate_range_kbps", "300:350")) { t->result = 2; break; }
         t->phase = P_VIDEO_SWITCH; break;
     case P_VIDEO_SWITCH: {
-        if (call_video_configure_rate(A, t->call_id, 2, 400000, 400000)
+        if (call_video_configure_rate(A, t->call_id, 2, 350000, 400000)
             || call_video_rate_applied(A, t->call_id, 1, g_rate_request, g_rate_bps) != -1) { t->result = 2; break; }
         struct call_video_frame f = video_test_frame(t->call_id, 2);
         if (call_video_send_frame(A, &f) != 1) { t->result = 2; break; }
@@ -551,7 +569,7 @@ static void call_tick(void* arg) {
         // Завершение во время незавершённой сборки/паузы приёма не оставляет callbacks.
         g_video_ready = 0;
         {
-            if (call_video_configure_rate(A, t->call_id, 3, 400000, 400000)) { t->result = 2; break; }
+            if (call_video_configure_rate(A, t->call_id, 3, 350000, 400000)) { t->result = 2; break; }
             struct call_video_frame f = video_test_frame(t->call_id, 3);
             if (call_video_send_frame(A, &f) != 1) { t->result = 2; break; }
         }