From 2aad3a698fc1e5bbef4dce6ee3120d9c1b6496be Mon Sep 17 00:00:00 2001
From: "Andrew M. Stoltz" <1578013+astoltz@users.noreply.github.com>
Date: Fri, 20 Mar 2026 12:45:28 -0500
Subject: [PATCH] Try inband DTMF detection for AX83H

Phone negotiates RFC4733 but may not actually send telephone-event
RTP packets. Inband detects DTMF from audio stream directly.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---
 apps/asterisk/configmap.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/apps/asterisk/configmap.yaml b/apps/asterisk/configmap.yaml
index 8005fd9..b682949 100644
--- a/apps/asterisk/configmap.yaml
+++ b/apps/asterisk/configmap.yaml
@@ -96,7 +96,7 @@ data:
     allow=ulaw
     allow=alaw
     direct_media=no
-    dtmf_mode=auto
+    dtmf_mode=inband
     rtp_symmetric=yes
     force_rport=yes
     rewrite_contact=yes