The SMS can help to avoid the need for expensive person to person voice calls to customer service centers to a large extent. In the customer service environment, SMS can help to deliver account status information, new service configuration and so on, in particular when standard SMS is combined with a protocol such as SIM Application or WAP. SMS can be used not only to allot job to the field force, but also can be useful as means for the service engineer or sales executive can keep the office informed of progress of the allotted job. The remote worker can send in a short status message such as "Job 1234 complete, on my way to 1235". Because of the need to communicate with mobile workers and effectively and cost-effectively and serve customers on time, such job dispatch applications are likely to be steady generators of short messages.