Agent configuration

please someone help how to setup line button agent login in cisco phone like call center

Take a look at the AddQueueMember application in the Wiki.

https://wiki.asterisk.org/wiki/display/AST/Asterisk+13+Application_AddQueueMember

Along with RemoveQueueMember

https://wiki.asterisk.org/wiki/display/AST/Asterisk+13+Application_RemoveQueueMember

and possibly PauseQueueMember if your agents need to pause.

https://wiki.asterisk.org/wiki/display/AST/Asterisk+13+Application_PauseQueueMember