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&Tn Self-Test Commands
This command allows the user to perform diagnostic tests on the modem. These tests
can help to isolate problems when experiencing periodic data loss or random errors.
dnammoCtceffE
0T&.ssergorpnitsetynaspotS.trobA
1T&
,noitarepomedomseifirevtsetsihT.poolgolanalacoL
dnamedomehtneewtebnoitcennocehtsallewsa
siETDlacolehttaderetneatadynA.retupmoc
lacolehtotdenruterdna,detaludomedneht,detaludom
.enil-ffoebtsummedomeht,ylreporpkrowoT.ETD
3T&.tsetkcabpoollatigidlacoL
6T&
ehtyfirevnactsetsihT.tsetkcabpoollatigidetomeR
,knilsnoitacinummoceht,medomlacolehtfoytirgetni
lacolehttaderetneatadynA.medometomerehtdna
.medometomereht,morfdenruterdna,ottnessiETD
htiwenil-noebtsumsmedomeht,ylreporpkrowoT
.delbasidlortnocrorre
Result Codes:
KO0=n
TCENNOC6,3,1=n
RORREesiwrehtO
ATI11 Display Diagnostic Information for the last modem connection
The “ATI11” command displays the following diagnostic information for the last
modem connection. A value of “NA” will be displayed if that parameter is not appli-
cable for that connection.
Table 1. Diagnostic Information
Description Example Comments
Last Connection .34 56K/V.34/V.32 - The last data connection is
successful. Failure-the last data connection
failed.
Initial Transmit Carrier Rate 33600 The upload connection rate after initial nego-
tiation.
Initial Receive Carrier Rate 33600 The download connection rate after initial ne-
gotiation.