Line and protocol status events

Event

Informational/
Transitional

Solicited/
Unsolicited

Indicates that...

NCCEVN_LINE_IN_SERVICE

Transitional

Unsolicited

The network placed the line in service (was out of service).

NCCEVN_LINE_OUT_OF_SERVICE

Transitional

Unsolicited

The network placed the line out of service (was in service).

NCCEVN_PROTOCOL_ERROR

Informational

Solicited/

Unsolicited

A two channel call transfer failed or an error condition occurred. The call may be in an unusable state.

NCCEVN_PROTOCOL_EVENT

Informational

Solicited/

Unsolicited

A protocol-specific event occurred.