From 07d9515828ad52eed1eda8d805a3c3bca1740760 Mon Sep 17 00:00:00 2001
From: Pierre Pronchery <khorben@defora.org>
Date: Fri, 5 Sep 2014 20:46:57 +0200
Subject: [PATCH] Improved the signal level calculation

---
 src/modems/hayes.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/modems/hayes.c b/src/modems/hayes.c
index e464f1d..edc51df 100644
--- a/src/modems/hayes.c
+++ b/src/modems/hayes.c
@@ -3865,10 +3865,13 @@ static void _on_code_csq(HayesChannel * channel, char const * answer)
 		return;
 	if(u > 31)
 		event->registration.signal = 0.0 / 0.0;
-	else if(u <= 12)
+	else if(u >= 20)
 		event->registration.signal = 1.0;
 	else
-		event->registration.signal = (32.0 - u) / 20.0;
+	{
+		event->registration.signal = (u > 4) ? (u - 4) : 0;
+		event->registration.signal = event->registration.signal / 16.0;
+	}
 	/* this is usually worth an event */
 	hayes->helper->event(hayes->helper->modem, event);
 }