Microsoft KB Archive/285175

= Carrier DMI Error Message: 503 Service Not Available =

Article ID: 285175

Article Last Modified on 10/27/2006

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APPLIES TO


 * Microsoft Mobile Information Server 2001 Enterprise Edition

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This article was previously published under Q285175



SYMPTOMS
When a push notification (Short Message Service) is sent using the HTTP protocol from a server that is running Microsoft Mobile Information Server Enterprise Edition to a server running Mobile Information Server Carrier Edition, the following response may be returned from the Carrier server.

503 Service not available



CAUSE
The 503 error indicates that the message processor component on the Carrier server (also referred to as Device Message Interconnect or DMI) timed out after waiting one minute for a response from the Short Message Service connector component of the Carrier server. This may be because the Short Message Service connector was unable to establish contact with the carrier's Short Message Service center.



RESOLUTION
The message will be queued up and retried later.



MORE INFORMATION
The Short Message Service Center is the third-party server at the Carrier that is responsible for sending the Short Message Service message to the device. After the message is sent to the Short Message Service center, it has left the Mobile Information Server system.

Additional query words: MIS MMIS SMS SMSC

Keywords: kbprb KB285175

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