[Freeswitch-users] LED-Controlling on Snom phones. Missing Subject header

[Helmut Kuper]

Hello,

I try to control the LEDs on Snom 370 phones using LUA and event type 
SEND_MESSAGE. The phone receives this message:

MESSAGE sip:2850 at 85.16.245.213:1051 SIP/2.0
Via: SIP/2.0/UDP 85.16.246.6;rport;branch=z9hG4bKeer7H9cFa85DN
Max-Forwards: 70
From: <sip:2850 at 85.16.246.6>;tag=yH2p954XZZ1tj
To: <sip:2850 at 85.16.246.6>
Call-ID: 2a6ed9ba-ef6d-122d-3d83-00144fe6e332
CSeq: 131979517 MESSAGE
Contact: <sip:mod_sofia at 85.16.246.6:5060>
User-Agent: FreeSWITCH-mod_sofia/1.0.head-17097:17188M
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, UPDATE, INFO, 
REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
Supported: timer, precondition, path, replaces
Content-Type: application/x-buttons
Content-Length: 10

k=1
c=on



and Snom acknowledges this with 200 OK. Unfortunately nothing happens.

Snom's howto (http://wiki.snom.com/Category:HowTo:LED_Remote_Control) 
describes a message like this:

MESSAGE sip:44 at 172.20.25.101:2048;transport=tls;line=44qsudyt SIP/2.0
  Via: SIP/2.0/TLS 
172.20.25.102:5061;branch=z9hG4bK-2909fe081f8466c9836c3b673f284842;rport
  From: <sip:44 at localhost>;tag=17820
  To: <sip:44 at localhost>
  Call-ID: umceg9jb at pbx
  CSeq: 35160 MESSAGE
  Max-Forwards: 70
  Contact: <sip:172.20.25.102:5061;transport=tls>
  Subject: buttons
  Content-Type: application/x-buttons
  Content-Length: 7

  k=3
  l=42


Main difference is the subject header containing "buttons" (despite of 
the body)

Is there a way to add subject header as above to the message generated 
by FS?

regards
Helmut