diff --git a/services/asterisk_bridge_service/voice_ai.py b/services/asterisk_bridge_service/voice_ai.py
index 1eed1a8..393b3ab 100644
--- a/services/asterisk_bridge_service/voice_ai.py
+++ b/services/asterisk_bridge_service/voice_ai.py
@@ -938,7 +938,11 @@ def retry_escalation_no_answer(session, *, call_id: str, dial_outcome: str) -> N
     )
 
     attempted_ids = json.loads(escalation.attempted_agent_ids_json or "[]")
-    channel = _resolve_handoff_channel(session, link)
+    # Use the already-known, actively-maintained channel name directly instead of
+    # _resolve_handoff_channel()'s live AMI CoreShowChannels re-discovery: that
+    # round-trip can take ~10s, which races (and loses) against the dialplan's
+    # own short MusicOnHold-then-hangup wait window for this exact retry path.
+    channel = str(link.channel_name or "").strip() or _resolve_handoff_channel(session, link)
     required_skills = json.loads(escalation.required_skills_json or "[]")
     next_agent = _reserve_routing_agent(
         call_id=call_id,
diff --git a/services/shared/models.py b/services/shared/models.py
index 00b2bd9..4c8f470 100644
--- a/services/shared/models.py
+++ b/services/shared/models.py
@@ -363,6 +363,12 @@ class VoiceEventIn(BaseModel):
         "recording.ready",
         "call.connected",
         "call.transferred",
+        "AgentReserved",
+        "AgentRinging",
+        "AgentNoAnswer",
+        "AgentConnected",
+        "TransferCompleted",
+        "TransferFailed",
     ]
     call_id: str
     interaction_id: str | None = None