diff --git a/channels/chan_dahdi.c b/channels/chan_dahdi.c
index b8ca4807ad..a69f95f920 100644
--- a/channels/chan_dahdi.c
+++ b/channels/chan_dahdi.c
@@ -2381,7 +2381,14 @@ static int my_is_off_hook(void *pvt)
 		ast_log(LOG_WARNING, "Unable to check hook state on channel %d: %s\n", p->channel, strerror(errno));
 	}
 
-	return (par.rxbits > -1) || par.rxisoffhook;
+    if ((p->sig == SIG_FXSKS) || (p->sig == SIG_FXSGS)) {
+        /* When "onhook" that means no battery on the line, and thus
+         it is out of service..., if it's on a TDM card... If it's a channel
+         bank, there is no telling... */
+        return (par.rxbits > -1) || par.rxisoffhook;
+    }
+
+    return par.rxisoffhook;
 }
 
 static void dahdi_enable_ec(struct dahdi_pvt *p);