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+L
3: Command sets
Training sequence in V.22 bis or V.32/V.32 bis:
When the modems are connected at the V.22 bis or the
V.32/V/.32 bis standard, they may loose synchronisation due to
line disturbances. The synchronisation may be retained by
performing a retrain sequence. This is done manually by issuing
the escape sequence (+++) and the O01 commana.
The modems may also do this automatically based upon the
EQM values on the received signal samples. +S register 13
must be set to a low value (ex. 70). Read more about +S13 and
+§14 in the S register chapter. During an automatic retrain CTS
(106) will be off.
When the modem is used on a leased line it should be
configured to start up with a userdefined profile in case of power
downs. (&W and &Y commands).
When using the modem in a leased line configuration it is often
more convenient to set the modem in manual leased line
configuration.
"Read more about this in chapter 5 "Manual operation".
Set LPDA2 option
Command:
+L1 , +L2
This command selects the LPDA2 mode of operation in
synchronous mode. The command automatically sets the
modem in synchronous SDLC mode and must therefore be the a
part of the last command string given to the modem. Changing
from LPDA2 mode to normal synchronous or asynchronous
mode can only be done from the display menu.
:
' 1 Set LDPA2 Primary mode
:
'|Set LDPA2 Secondary mode
In order to utilise the full LPDA2 support, an address has to be
specified in the +S48 register. (For more information see the
LPDA2 section under synchronous operation.)
LZTR104006 R1.00
3-27
Zat 14.4/14.4-7 and Zat 19.2/19.2-7
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