Service and Repair Notes S-0041 - Revision history

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SERVICE AND REPAIR NOTES

2019-03-28T10:29:12Z

Created page with "Category:Quantar Service Bulletin <html> <font FACE="Times New Roman" SIZE="2"></font><font FACE="Arial" SIZE="2"> <p>SERVICE AND REPAIR NOTES<br> </font><font FACE="Impa..."

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[[Category:Quantar Service Bulletin]]

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<p>SERVICE AND REPAIR NOTES<br>
</font><font FACE="Impact" SIZE="7">Bulletin </font><font FACE="Arial" SIZE="2"><br>
TECHNICAL INFORMATION<br>
COMMERCIAL, GOVERNMENT & INDUSTRIAL SOLUTIONS SECTOR<br>
1301 E. ALGONQUIN RD.<br>
SCHAUMBURG, IL. 60196<br>
(847) 576-0180 </font></p>
<p><font FACE="Arial" SIZE="2"><b>SRN # S-0041<br>
APC # 680<br>
DATE: April 2001<br>
EXPIRES: NA</p>
</b>
<p>
SUBJECT: Quantar Data Base Station users experiencing longer than expected
transmission times/duplicate inbound
</font> <font FACE="Arial" SIZE="2">status messages.</p>
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<p>SYSTEMS AFFECTED: </font></b><font FACE="Arial" SIZE="2">Private DataTAC
Intermittently keyed, Single Frequency Reuse (SFR) stations.</p>
</font><b><font FACE="Arial" SIZE="2">
<p>MODEL/OPTION AFFECTED: </font></b><font FACE="Arial" SIZE="2">Quantar Data
Base Station T5365A with option X399_C.</p>
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<p>SYMPTOM:</p>
<p>Longer than expected transmission times. </font></b><font FACE="Arial" SIZE="2">This
is due to the radio and modem not synching up properly and causing
</font> <font FACE="Arial" SIZE="2">retries on the network to successfully deliver the message.</p>
</font><b><font FACE="Arial" SIZE="2">
<p>Duplicate status message</font></b><font FACE="Arial" SIZE="2">s. This occurs
because status messages, by design, do not have sequence numbers, so the
</font> <font FACE="Arial" SIZE="2">Radio Network Controller (RNC) is unable to detect that a duplicate was sent
because of a retry. The retry is happening
</font> <font FACE="Arial" SIZE="2">because the device is not decoding the ACK from the base station, as
described below.</p>
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<p>DESCRIPTION: </font></b><font FACE="Arial" SIZE="2">The Network Configuration
and Optimization Guide (NCOG) - 68P81099E55E reflects an incorrect
</font> <font FACE="Arial" SIZE="2">parameter value for the data base station (DBS) in an SFR-Single Frequency
Reuse configuration- (page 5-69, figure 5-60). The SyncLen1 [62] setting identifies the number of symbols to output
during the symbol sync interval prior to frame
</font> <font FACE="Arial" SIZE="2">sync at the beginning of each outbound transmission. Without appropriate
amount of symbol sync, the radio/modem
</font> <font FACE="Arial" SIZE="2">cannot synchronize with the outbound transmission. Therefore, packets can be
missed by the radio/modem requiring the
</font> <font FACE="Arial" SIZE="2">RNC to retry the packet. Current release of the NCOG specifies this value
should be 18 hex (this was in error) - the
</font> <font FACE="Arial" SIZE="2">appropriate value should be 40 hex for best operation.</p>
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<p>RESOLUTION: </font></b><font FACE="Arial" SIZE="2">Change the parameter for
each SFR base station remotely using an RNC console session.</p>
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<p>PROCEDURE: </font></b><font FACE="Arial" SIZE="2">From an RNC console
session, enter the following for each SFR site:</p>
<p>1. RNC>bsccons <site index></p>
<p>2. DBS [site index] > sp (to set personality)</p>
<p>3. Set_personality > 62 40 (to change the SyncLen1 parameter to the
correct value)</p>
<p>4. Set_personality > x (to exit setting personality)</p>
<p>5. Answer ï¿½Yï¿½ to the change personality prompt</p>
<p>6. DBS [site index] > sm (to enter service mode)</p>
<p>7. DBS [site index] > xr (to cold start the base station)</p>
<p>8. RNC></p>
<p>Repeat the above procedure for each SFR base station</p>
<p align="center">This is an Informational Bulletin only.</p>
<p align="center">No reference to warranty is implied or intended.</p>
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