iCallDroid - VoiceMail

[font=sans-serif, arial, helvetica]Hi, I can't login to the voicemail, always get password is incorrect: [/font]
[font=sans-serif, arial, helvetica]
[/font]
[font=sans-serif, arial, helvetica]From asterisk -vvvvvvvvvvvvvvr [/font]
[font=sans-serif, arial, helvetica]Incorrect password '' for user '6001' (context = default) [/font]
[font=sans-serif, arial, helvetica] [/font]
[font=sans-serif, arial, helvetica]Is it because the system didn't detect the phone signal correctly ? [/font]
[font=sans-serif, arial, helvetica] [/font]
[font=sans-serif, arial, helvetica]Any help will be appreciated. [/font]
[font=sans-serif, arial, helvetica] [/font]
[font=sans-serif, arial, helvetica]US / Canada Phones: [/font]

Asterisk Build:
Asterisk/1.6.2.11
Asterisk GUI-version : SVN--r5209
Build Time : 201309241002

Pls prepare remote access for debugging.