[cisco-voip] FW: CDRs not showing Prefix!!

[dev]

Hi,
 
I am not into IPT much. I actually need to process some CDR queries to
extract a certain report. Now the problem is that I noticed none of the CDRs
show the prefix dialed so that I can make out which calls are On-net and
which are off-net. Anyway, with some research I knew that this is because of
the discard digits instruction on the CallManager. We are using CCM 4.3.2.
The CCM is connected to E1 as far as I am concerned.
 
My question is if we change the digit discard instruction on the CCM to
predot, what needs to be done on the PSTN gateway side?
 
Thanks
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