Can not dial manually on Vicidial

Hi everyone,
I'm new here, as with vicidialnow too. I tried to look after an answer to my question before asking but no luck!
I installed from scratch :
Vicidialnow 1.2
Asterisk v1.2.30.2
admin.php 2.0.5-173
BUILD 90320-0424
I used the config of my provider for etc/asterisk/sip-vicidial.conf
When I try to dial manually the Xlite client says "the person you are calling is unavailable, please try again". and this is whether I'm logged to the agent's interface or not.
Any ideas would be appreciated.
I'm new here, as with vicidialnow too. I tried to look after an answer to my question before asking but no luck!
I installed from scratch :
Vicidialnow 1.2
Asterisk v1.2.30.2
admin.php 2.0.5-173
BUILD 90320-0424
I used the config of my provider for etc/asterisk/sip-vicidial.conf
When I try to dial manually the Xlite client says "the person you are calling is unavailable, please try again". and this is whether I'm logged to the agent's interface or not.
Any ideas would be appreciated.