Sierra Wireless RAVEN 1X 20070914 - Manual (Page 156)

Raven 1x
151 20070914
is strongly recommended that a value of 18 or better be
used as a minimum value.
Tip: You can use the A/ command to repeat the last AT command.
e. Remove the connection to the Laptop PC and connect
your equipment to the Raven Modem.
f. Have the actual application call your equipment via
the modem telephone number and verify communica‐
tions.