T38 options

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The t38_options setting in the call configuration string can be used to modify the T38 behaviour of berofix. The general layout is:

t38_options=key1=val1:key2=val2:..

The Settings that can be used are:

plc=0..2 
ecm=0/1                Error Correction Mode enable/disable, default 1
rc_fp=0..3             Redundancy Count for Fax Page Data, default 0
rc_t30=0..7            Redundancy Cound for T30 Frames, default 3
fcs=0..6
tcf=0/1
tsp=0/1


an example would be:

t38_options=rc_fp=3