package icssessionmanager const ( //register status STATUS_REGISTER_NOT_READY = 1 << iota STATUS_REGISTER_READY STATUS_REGISTER_REQUEST STATUS_REGISTER_REGISTERED STATUS_REGISTER_EXPIRED //phone-agent status STATUS_AGENT_NOT_READY STATUS_AGENT_READY STATUS_AGENT_CALLING STATUS_AGENT_CANCELING STATUS_AGENT_BUSY STATUS_AGENT_BYEING STATUS_AGENT_ERROR )