Equisys technical notes

Technical guidance, explanations and fixes for our products

PRB: Duplicate SMS alerts received with Zetalink

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ZTN2005

ID: ZTN2005

This Zetalink technical note applies to:

  • Zetalink version 1.0

Symptom

You will intermittently receive duplicate or triplicate SMS alerts/summaries to your mobile device and your communications server will display the following error message in the Zetafax server monitor program:

'Error communication port fault sending message to remote'

Cause

The SMS device controller (DEVSMS) is not receiving confirmation from the GSM modem that the SMS message has been sent successfully and thus retries until it does. The problem is not specific to a type of GSM modem and has been know to occur from time to time on all devices tested by Equisys.

Resolution

If this problem is occurring often enough to cause major inconvenience changing the modem and/or network provider may help reduce this problem.

Or

This error is dependant on the modem and/or network provider and thus no workaround is available.

Status

This has been identified by Equisys as a problem with the software versions given above.

Last updated: 15 November 2001 (KM/DH)

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