A system and method for service fulfillment is based on service invocation with a preprogrammed communication device. The communication device recognizes special multi-function code digit sequences to cause service invocation. The preprogrammed communication device, upon recognition of a multi-function code, selects a communication channel or messaging protocol and forwards information related to the service invocation to a service fulfillment platform. The communication channel or messaging protocol may be selected based on availability, optimization, preprogrammed logic associated with the multi-function code, or other parameters related to the service invocation, such as user, subscription, registration, location or device ID. The preprogrammed communication device permits service invocation without reconfiguration of a communication network to which the communication device is coupled. The communication device can be reconfigured or reprogrammed to recognize and respond to different multi-function codes.