Fix call forwarding for analog phones.

(closes issue #16440)
Reported by: mmichelson


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@235382 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_dahdi.c

@@ -8685,7 +8685,9 @@ static struct ast_channel *dahdi_new(struct dahdi_pvt *i, int state, int startpb
 		tmp->amaflags = i->amaflags;
 	i->subs[idx].owner = tmp;
 	ast_copy_string(tmp->context, i->context, sizeof(tmp->context));
-	ast_string_field_set(tmp, call_forward, i->call_forward);
+	if (!analog_lib_handles(i->sig, i->radio, i->oprmode)) {
+		ast_string_field_set(tmp, call_forward, i->call_forward);
+	}
 	/* If we've been told "no ADSI" then enforce it */
 	if (!i->adsi)
 		tmp->adsicpe = AST_ADSI_UNAVAILABLE;

channels/sig_analog.c

@@ -402,6 +402,7 @@ static struct ast_channel * analog_new_ast_channel(struct analog_pvt *p, int sta
 	}
 
 	c = p->calls->new_ast_channel(p->chan_pvt, state, startpbx, sub, requestor);
+	ast_string_field_set(c, call_forward, p->call_forward);
 	p->subs[sub].owner = c;
 	if (!p->owner) {
 		p->owner = c;