Old http calling through ConfigManApp.com is not working on Sip-T21P

[msx]

is the outgoing_uri=y part mandatory ? I don't have any idea what it should be as I want the ip phone with given IP address to dial out through my dahdi channel ( it does so with my config when dialing 9xxxxxxxxx ).

As an example:

my phone IP: 10.1.1.10
My Asterisk: 10.1.1.1
My phone extension: 100
login of phone: login
Pass of phone: pass
Number to Dial: 99999999

is this url correct:

Code:

http://login:pass@10.1.1.10/servlet?key=number=99999999&outgoing_uri=100@10.1.1.1:5060

?!

it simply does not work for me. absolutely no reaction on phone.

Thank you again for your help and support,