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MAX Administration Guide
Understanding Syslog messages
Code combinations and their possible meanings
Code combinations and their possible meanings
A MAX unit applies a Disconnect code and Progress code to each call. Combinations of
Disconnect and Progress codes might indicate similar causes. Following is a partial list of code
combinations and their possible causes:
Disconnect
code
Progress
code
Possible cause
4
101
Before the call was answered, the call failed to provide a CLID
phone number that is configured on the MAX unit.
10
31
During modem training, the MAX unit waited for the Data Carrier
Detect) DCD signal from the user’s modem, but never detected the
signal. Typically, the modems had marginal line quality. Because
the MAX unit’s modem has a digital connection to its local CO,
the poor line quality is between the user’s modem and its local CO.
This code combination could also be caused by a user testing the
availability of the MAX unit by dialing into the MAX unit, then
hanging up during modem training. Also, there might be an
incompatibility between the modems.
This causes of this combination are similar to calls with a Discon-
nect code 185 and a Progress code 31, but this code combination
indicates that the MAX unit’s modem detected a training failure
before the phone line disconnected.
11
30
During modem training, the MAX unit’s modem detected DCD
but lost the modem carrier signal. Typically, the modems had mar-
ginal line quality. Because the MAX unit’s modem has a digital
connection to its local CO, the poor line quality is between the
user’s modem and its local CO. Also, there might be an incompat-
ibility between the modems.
11
40
During an active terminal-server session, the MAX unit lost the
carrier signal from the user’s modem. The call could have ended
normally, or the modems might have had marginal line quality.
Because the MAX unit’s modem has a digital connection to its
local CO, the poor line quality is between the user’s modem and its
local CO. Also, there might be an incompatibility between the
modems.
11
43
During an active raw TCP session, the MAX unit’s modem lost the
carrier signal which a modem connection requires. The call could
have ended normally, or the modems had marginal line quality.
Because the MAX unit’s modem has a digital connection to its
local CO, the poor line quality is between the user’s modem and its
local CO. Also, there might be an incompatibility between the
modems.