-= Changes between the Supra 288 1.440-23 and the 1.440-25 ROM Code =-
1) On some calls the transmitted INFO0 sequence did not
indicate the 1664 point super constellation was supported.
Depending on the remote modem this could cause a 28.8Kbps
connect instead of a 31.2Kbps or 33.6Kbps connection.
2) The +DS command parser would not allow both the BTLZ
dictionary size and BTLZ max string lengths to be set in a
single command.
4) A timing problem on the SUP1331 that caused some class 2
fax software to fail when receiving a fax has been fixed.
5) A problem with the initialization of the NVRAM was fixed.
Some S-registers were not being set to default values when the
NVRAM was initialized.
6) When connecting to some modems which have Rockwell ACi
datapumps which are not configured for operation at
33.6Kbps a problem could occur that would cause very high
bit error rates at the remote modems receiver. This would
cause error correction negotiations to fail. The problem
does not occur if the remote Rockwell based modem is
configured for 33.6Kbps operation, or if the remote modem's
firmware includes certain Rockwell datapump fixes.
The firmware's connection logic was modified so it can
detect if the remote modem will have this problem, if it
will the local transmitter is adjusted to prevent it.
-= Changes between the Supra 288 1.440-22 and the 1.440-23 ROM Code =-
1) Several problems with retrains in V.32 and V.32bis connections
were fixed. Under some conditions they could cause the modem
to lock up while displaying a 300 bps connection rate on models
with LED/LCD displays.
-= Changes between the Supra 288 1.440-18 and the 1.440-22 ROM Code =-
1) A new S86 error code was added, and a new text message was added
to the %Q2 disconnect reason report.
S86 %Q2 disconnect reason
--- ---------------------
21 V.42bis Protocol violation
2) The default value for S192 is now 14, this sets S192.3.
This adjusts the duration of the V.34 phase 4 TRN signal
(Helps connect reliability).
3) The %Q1 report now includes the current TX and RX data rates,
the minimum TX/RX data rates for this call and the maximum
TX/RX data rates for this call.
4) Default setting for voice mode Silence Detection was changed
from 0 (off) to 2 (mid level).
6) A change was made to the two character LED driver that prevents
the display from freezing when long bits (eg. breaks) are
received.
-= Changes between the Supra 288 1.440-17 and the 1.440-18 ROM Code =-
1) In Synchronous Access Mode when an EM<ecs> command was
received the modem would switch to command mode and
respond with "OK" without sending the EM<ecs> response
first. It now sends the EM<ecs> response prior to the
"OK" response.
2) When originating a call the modem will set the maximum
projected data rate for the 3429 symbol rate to 33.6Kbps.
This allows calls to USR modems to connect using the 3429
symbol rate.
3) The V.42bis code was optimized to improve the compression
performance.
4) When the country code is set to a non-US value Bell mode
is disabled when the modem is reconfigured to a factory
configuration. (ie. &Fn sets B0 not B1 outside the US)
5) The EQM thresholds that control rate renegotiations to
higher rates were slightly decreased. With the v1.440-17
firmware some lines would ping/pong between a high and
low data rate, reducing the fall forward threshold prevents
this.
5) When bit 5 of S192 is set the EQM connection thresholds
are lowered, making the modem more conservative when
choosing data rates.
6) A problem with the datapump configuration during a V.34
connection using the 3000 symbol rate at a data rate of
26.4Kbps was fixed.
7) A change was made to how MP sequences are transmitted during
phase 4 of a V.34 connection. This decreases the chance that
the MP sequence will not be correctly received by the remote
modem which causes the connection sequence to restart.
9) The LAPM selective repeat feature (SREJ) is now enabled by
default in all modems.
-= Changes between the Supra 288 1.440-16 and the 1.440-17 ROM Code =-
1) Some older 28.8Kbps V34 modems from other manufacturers would
indicate during negotiation that they supported 33.6Kbps (or
even 36Kbps). This would cause fruitless attempts to negotiate
upward.
2) A problem that caused an occasional glitch in the LCD display
was fixed.
3) Under some conditions retrains were not being limited to a
maximum duration of 90 seconds.
4) Several problems that could cause some retrains to fail were
fixed.
5) The EQM tables for V.34 rate renegotiations (up and down) and
retrains were updated. Rate renegotiations to lower rates will
occur when the EQM exceeds 63 to 66, depending on connection
rate. Rate renegotiations to higher rates will occur when the
EQM is below 30 to 33, depending on connection rate. Retrains
will occur when the EQM exceeds 82 to 84, depending on
connection rate.
6) The EQM tables controlling initial connection rates were
modified, this increases the number of lines that connect at
higher data rates.
7) A LAPM problem that could cause the remote modem to reject
I frames been fixed.
-= Changes between the Supra 288 1.44-15 and the 1.440-16 ROM Code =-
1) On products with 2 character LED displays, the "RJ" and "TJ"
indications were being handled as error indications that
reset the display cycle. They are now normal indications,
they will appear in place of the "LP" indication if needed
during a display cycle.
2) On models with 2 character LED displays, the "RE" error
indication will appear when a LAPM frame is received with
a protocol violation. On models with LED displays, the
message "RX ERROR" will be displayed.
3) The maximum duration of a retrain or rate renegotiation
sequence has been limited to 90 seconds, including any
retries. At the end of 90 seconds a hangup will be initiated.
NOTE: Some other modem brands will finish a retrain and
immediately start a new one. This counts as two
retrains, each of which is given 90 seconds to finish.
7) LAP-M was modified to improve performance.
8) On models with LCD displays in display debug mode (S194.3=1),
the display will show "TX RNR" whenever the local modem
enters own busy state and transmits a LAPM RNR frame. The
display will show "RX RNR" whenever the local modem receives
a LAPM RNR frame indicating the remote modem is in busy state.
9) After a disconnect the %Q2 report will print the following
messages based on the disconnect reason given in S86.
S86 %Q2 disconnect reason
--- ---------------------
0 Local request
4 Carrier loss
5 No error correction (remote does not support EC)
6 No error correction (no response to feature negotiation)
7 Incompatible protocol (local modem async, remote sync)
8 Incompatible protocol (no framing technique in common)
9 Incompatible protocol (no protocol in common)
10 Incompatible protocol (bad response to feature negotiation)
11 Incompatible protocol (no sync information from remote)
12 Link disconnect
13 Excessive retransmissions
14 Protocol violation
15 DTR loss
16 GSTN cleardown
17 Inactivity timeout
18 Incompatible speeds
19 BREAK disconnect
20 Key abort
-= Changes between the Supra 288 1.44-14 and the 1.440-15 ROM Code =-
15 July 1996 (ALJ)
1) After a disconnect the far echo delay value printed by the
%Q1 command was a few milliseconds off.
2) The fix added in the last rev (item #8 in the -14 notes) was removed.
It didn't correctly address the problem. An alternate fix has been
applied that appears to fix the problem (let me know).
3) A potential problem was found in the -14 code for the SUP1331.
If you have problems flashing from the -14 on the SupraSonic (the
problem will exhibit itself by the modem not fully going into flash
mode. When in flash modem the LCD display should indicate that you
are in flash mode). To overcome the problem turn off the modem and
let it cool down then power-on the modem and immediately attempt to
put the modem in flash mode.
4) A problem in the LAPM code when the link was flow controlled
(own busy state) and then data transfer resumed could result
in a LAPM protocol violation and a disconnect. This only
happens when connected to non-Rockwell modems.
5) On the two character LED display the "RE" and "TE" indications
were removed. The new "RJ" and "TJ" indications replace
them. The "RJ" indication is displayed when a LAPM REJ or
SREJ frame is received. The "TJ" indication is displayed when
a LAPM REJ or SREJ frame is transmitted. (This is the correct
display description of what is happening.)
6) The %Q2 status report now includes the number of frames
received with CRC errors.
-= Changes between the Supra 288 1.44-12 and the 1.440-14 ROM Code =-
8 July 1996 (ALJ)
1) A problem in the retrain code could cause a lockup if a hangup
was initiated during a retrain.
2) The %Q2 stats were being cleared during disconnect on models with
2 character LED displays. (SUP1201 and SUP1281)
3) The default setting of the ESR command on SupraFAXModems has been
changed to 1 from 0.
4) Most of the %Q1 connection information is now available after
a call is terminated. The EQM, RX signal level and TX signal
level are only available while connected, the availability of
other information depends on the connection type.
5) CONNECT messages with the DTE rate were incorrect for DTE
rates 16800, 21600, 24000, 26400, 28800, 31200, and 33600.
6) After a connection ends the %Q2 command will print the disconnect
reason (S86) as text.
7) A problem in the LAPM code was fixed, it could cause disconnects
during long connections at high data rates.
8) A problem connecting to some other products on lines
with very little attenuation was fixed.
(When the connection failed the remote would emit a
continuous high frequency tone.)
9) When the display is in debug mode (S194.1=1) models
with displays will indicate when LAPM REJ and SREJ
frames are received or transmitted.
On models with LED displays (SUP1201, SUP1281) receiving REJ or
SREJ frame will cause a "TE" (transmission error) display.
Transmitting a REJ or SREJ frame will cause a "RE" (receive
error) display.
On models with LCD displays (SUP1331) receiving a REJ will
cause a "RX REJ" display. Receiving a SREJ will cause a
"RX SREJ" display. Transmitting a REJ will cause a "TX REJ"
display. Transmitting a SREJ will cause a "TX SREJ" display.
NOTE: The "RE"/"TE" displays on the SUP1201 and SUP1281 do not
have the exact same meaning they used. "TE" used to mean
that LAPM I frames were being retransmitted, this could be
due to the remote modem receiving frames with CRC errors
or due to the remote modem discarding I frames when in a
flow controlled state. So some old "TE" displays didn't
indicate problems with the link, that flow control was
occuring.
10) In Synchronous Access mode EM characters with the high bit set
were not being decoded correctly.
FOR INFORMATION ON CHANGES FROM THE 1.300-XX CODE TO THE 1.440-12 CODE
SEE THE RELEASED 1.440-12 ARCHIVE (336NOW.xxx)
Download Driver Pack
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Find the device and model you want to update in the device list.
Double-click on it to open the Properties dialog box.
From the Properties dialog box, select the Driver tab.
Click the Update Driver button, then follow the instructions.
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