SPC Connect Asterisk Failed!

When I click Enable button, SPC throws "Asterisk Registration Failed: Please Check the credentials".
Following is the manager.conf, is there anyone can help me fix this problem???
SPC Server IP Address: 192.168.2.100/255.255.255.0
manager.conf>>>
;
; Asterisk Call Management support
;
[general]
enabled = yes
port = 5038
bindaddr = 0.0.0.0
[admin]
secret = amp111
deny=0.0.0.0/0.0.0.0
permit=192.168.2.100/255.255.255.0
permit=127.0.0.1/255.255.255.0
read = system,call,log,verbose,command,agent,user
write = system,call,log,verbose,command,agent,user