LCR1.14-MISDNV2-Asterisk11-No DialTone?

First many congrats for your continuing support of ISDN telephony.
I have an old asterisk system with mISDN v1 (kernel 2.6)  since many 
years and trying during last month to renew  and go to mISDN v2 with 3.x kernel and Asterisk11.
I checked and seems that chan_misdn is not working anymore with new Asterisk/kernel 3.x and chan_lcr is the solution.
I have managed to install LCR 1.14. mISDNv2 and asterisk11 (a torture, anyway...)

LCR seems working by itself. Dial tome is heard when picking up the (ISDN) phone.

Then I used the BRIDGE commant to interconnect Int and ast interfaces (inside interface.conf). 

Seems working BUT: I get no Diatone at all when picking up the extension ISDN phone.....
Tried various things for the last days...nothing worked. Internet did not help either.
So I would like to ask any hint from your side? If I solve also this  am willing to publish and istallation guide when 
finished to help other do this setup in a couple of hours (it took me ~1 month!!!)
many thanks
GV

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