Extension number not appearing in CDR

[eniyamath]

Hi Friends

There are two pabx's connected together
hipath 4000 v6 and Hipath 4000 v2
Analog trunk lines are connected in Hipath 4000 v2
The CDR for Hipath 4000 V2 is working fine
but the CDR for Hipath 4000 V6 appear only dialled number and extension number shows NULL.
The billing system connected in Hipath 4000 V2
Both hipath 4000 v2 and V^ are integrated through E1 connectivity (DIUN2 Card)
Closed numbering
Hipath 4000 v2 number range is from 100 to 399
Hipath 4000 V6 number range is from 8000 to 8999
Cisco also interconnected to Hipath 4000 V6 through Native SIP.

What will be the issue
can anyone give me idea.

Thanks

 

[sbcsu]

Compare the CDR setup also the COS and FEASU to see what is missing or different