CS1000 rls 6 co-resident ip telephony down

[lexer]

Hi, I've got a customer with a CS1000 rls 6 co-resident (CPPM), They have two DTI2Mb cards (E1), They have Ip telephones 1140e,2004 etc.(unistim), digital and analog traditional phones. But I've got the following problem: When The E1's card present errors (For failure in the carrier) the Ip Telephony stop working (all Ip telephone go offline), Traditional telephones digital and analog continue working, the only way to make the Ip telephony to start is resetting the CS1000 (turn off and on) and that the E1 carrier be up. I've had The same problem in a CS1000 rls 7.5 co-resident (CP MG), I solved the problem creating in LD 73 the "DDB" TRSH 00 with the following values:

>ld 73
REQ prt
TYPE ddb
CC DATA NOT 1.5MB
TRSH 00
RALM 128
BIPC 0
LFAC 0
BIPV 3 2
SRTK 24 3600
SRNT 1024 1024
LFAL 17 10240
SRIM 127
SRMM 127
ICS

I tried the same in CS1000 rls 6 but It didn't work, the only different with rls 7.5 is that I have two DDB TRH (0 and 1) in my rls 6.0 as show:


>ld 73
REQ prt
TYPE ddb

CC DATA NOT 1.5MB


TRSH 00
RALM 128
BIPC 0
LFAC 0
BIPV 4 4
SRTK 24 3600
SRNT 1024 1024
LFAL 10240 10240
SRIM 127
SRMM 127
ICS

TRSH 01
RALM 128
BIPC 0
LFAC 0
BIPV 4 4
SRTK 24 3600
SRNT 1024 1024
LFAL 10240 10240
SRIM 127
SRMM 127

Please any ideas to solve the problem in CS1000 rls 6.0?
How do I know with DDB TRSH applies to CS (TRSH 0 or 1)? for deleting any TRSH it says that I have to remove DTI2 loops