US Robotics Sportster Flash x2 User Manual page 54

Yn Selects power-on/reset default configuration.
* Y0 Default is profile 0 setting in NVRAM
Y1 Default is profile 1 setting in NVRAM
Y2 Generic Template (&F0)
Y3 Hardware Flow Control (&F1)
Y4 Software Flow Control (&F2)
Zn Resets modem.
Z0 Resets modem to NVRAM profile selected
by Y command
Z1 Resets modem to NVRAM profile 0
Z2 Resets modem to NVRAM profile 1
Z3 Resets modem to factory default profile 0 (&F0)
Z4 Resets modem to factory default profile 1 (&F1)
Z5 Resets modem to factory default profile 2 (&F2)
&$ Displays a list of ampersand (&) commands.
&An Enables/disables ARQ codes.
&A0 ARQ result codes disabled
&A1 ARQ result codes enabled
&A2 V- modulation indicator added
* &A3 Protocol indicators added - LAPM/MNP/NONE
(error control) and V42bis/MNP5 (data
compression)
&Bn Sets modem's serial port rate.
&B0 Variable, follows connection rate
* &B1 Fixed serial port rate
&B2 Fixed in ARQ mode, variable in non-ARQ mode
&Cn Controls Carrier Detect (CD) signal.
&C0 CD override
* &C1 Normal CD operations
&Dn Controls Data Terminal Ready (DTR) operations.
&D0 DTR override
&D1 Reserved
* &D2 Normal DTR operations
50 Sportster Flash x2 - User's Guide