Problem:

When I try to use a BSMGR communications program I get the error
"Cannot open /etc/default/bsmgr"

Solution:

At the select option prompt in BSMGR type EDIT and press enter.

When prompted for the file name type:
/tmp/bsmgr

This should bring up a blank screen.
Type in the following lines in exactly the same case. (Orange italic characters (0) are zeros, not the letter "o".)

MDM_SETUP=AT&F1X4S11=90 MDM_OPTION= MDM_DIALCMD=ATDT MDM_ESCAPE=+++ MDM_HANGUP=ATQ0H0 MDM_RESET=ATQ0Z MDM_DIALIN=ATS0=1 MDM_ATTN=AT MDM_DSBLESC=ATS2=128 RTC_OK=OK RTC_NOCARR=NO CARRIER RTC_ERROR=ERROR RTC_NOTONE=NO DIAL RTC_BUSY=BUSY RTC_NOANS=NO ANSWER RTC_300=CONNECT RTC_1200=CONNECT 1200 RTC_2400=CONNECT 2400 RTC_4800=CONNECT 4800 RTC_9600=CONNECT 9600 RTC_14400=CONNECT 14400 RTC_19200=CONNECT 19200 RTC_28800=CONNECT 28800 RTC_38400=CONNECT 38400

Press F4 and choose (S)ave.

Exit to the UNIX prompt and type: su and press enter.

When prompted type the root password.

At the # sign type:
mv /tmp/bsmgr /etc/default/bsmgr <Enter>
exit <Enter>