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Maintenance Commands and Trouble-Clearing Aids
555-233-123 8-44 Issue 4 May 2002
Asynchronous
Data Mode
This field will configure the modem as an asynchronous
communications device. This field is 8 characters long and is
case in-sensitive. (&M0&Q0)
DTE Auto-Data
Speed
This option will adjust the speed of the data source (DTE)
UART to the outgoing (modem-to-modem) data rate. So, at
maximum this speed would be 9600 baud. This field is 6
characters long and is case in-sensitive.
Note that this field sets the link speed between the switch and
the modem. It does not set the speed of the modem. It is not
desirable to have the serial data fill the modem buffer faster
than the outgoing data rate especially because data
compression is disabled. ()
Disable Data
Compression
This field will turn off the default data compression algorithms
that are in use by most consumer modems. This field is 6
characters long and is case in-sensitive. ()
Enable Error
Control
This field will turn on the V.42 LAPM and MNP error control
protocols, if available on the modem. This field is 6 characters
long and is case in-sensitive.
This V.42/MNP/Buffer mode first attempts to negotiate V.42
error control with the remote modem. If this fails, then the
modem transitions to MNP, and if this fails then no error control
is used. ()
Misc. Init.
Param
This field supports any initialization parameters that are not
already specified. The AT commands specified in this free-form
field will be always the last initialization parameters to be sent
to the external modem. This field is 20 characters long and is
case in-sensitive. ()
Auto-Answer
Ring Count
This field controls the number of rings required before the
modem automatically answers an incoming call, if and only if
the switch doesn’t answer first. (If the switch is healthy, it
answers an incoming within the first few rings.) This field is 6
characters long and is case insensitive. Typically, the maximum
permissible value for this register is 255. The values 1-255
denote the number of incoming ring cycles. (S0=10)
NOTE:
The number of rings is optimally set above 5, and if
at all possible, keep the default of S0=10.
Dial Type
This field controls the type of inter-register signaling to be used
between the modem and the Central Office. Use “T” for tone
dialing and “P” for pulse dialing. The field length is be 3
characters long and is case in-sensitive. This field will be
concatenated with the dial string. (T)