cisco 8841 config file ignoring port

[astrakid]

hi,

i am trying to get a cisco 8841 working with a custom port configuration. but i can do what i want the phone is always ocnnecting towards port 5060.

additionally it is using always udp. as sonn as i set 

<transportLayerProtocol>1</transportLayerProtocol>

i don't see any communication to my sip-server. i tried "2" and "4".

any ideas?

regards,

andre