Microsoft KB Archive/218105

= SBS Modem Sharing Displays Port with a UPS on it as an Available Modem Pool =

Article ID: 218105

Article Last Modified on 12/11/1999

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APPLIES TO


 * Microsoft BackOffice Small Business Server 4.5

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This article was previously published under Q218105



SYMPTOMS
When you view the Modem Sharing service in Control Panel, the uninterruptible power supply (UPS) may be displayed as an available modem pool when the Modem Sharing service connects to a COM port.



CAUSE
This behavior occurs because all DATAMODEM-capable Telephony API (TAPI) devices are grouped into pools by default during Modem Sharing Setup.

For example, all Sportster 33600 modems are grouped into a pool, all Boca 28800 modems are grouped into pool, and all serial ports (with no modems connected to them) are grouped into another pool.



RESOLUTION
To resolve this problem:
 * 1) Remove the UPS pool from the Modem Sharing Pool list.
 * 2) Modify the command strings for the UPS so it does not respond as a modem.



STATUS
Microsoft has confirmed that this is a problem in BackOffice Small Business Server 4.5.



How to Determine if a Device is a DATAMODEM-Capable Device
During the configuration portion of Modem Sharing Setup, a query is issued to the serial ports. If the device answers TRUE, it is treated as a modem. If the UPS has these capabilities, it can be shared, and a Modem Sharing client can map a port to this pool and communicate with the UPS.

Additional query words: smallbiz

Keywords: kbbug kbnofix KB218105

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