Echo issue on OM2008.08 solved

[Michael 'Mickey' Lauer]

While I do think this is completely overcomplicated and you should
rather rebuild the source than fiddling on this level, I'll tell you how
to do it anyways:

AT%CPI=4 enables the TI Calypso proprietary call progress status. See
http://git.freesmartphone.org/?p=framework.git;a=blob_plain;f=framework/subsystems/ogsmd/modems/ti_calypso/unsolicited.py;hb=HEAD for details on the format.

Have fun,

:M: