TCH tap: extend DL sniffing feature to support CSD modes Our debug feature for TCH DL sniffing reads the content of the DSP's a_dd_0 buffer (or a_dd_1 for TCH/H subchannel 1) at appropriate times and forwards captured bits to the host. This feature was originally implemented for TCH/FS, TCH/EFS and TCH/HS - now extend it to cover TCH/F data modes too.

# modem services config: voice only
GPRS=0
SRVC=0

# this is a phone handset config
MMI=2
R2D_STATE=1

# big color UI version
R2D_EMBEDDED_LCD=7
UI_CONFIG=bigcolor