Cisco sip phones call forwarding PRIVATE issue with asterisk


Recently we converted cisco 7941 and 7942 models to SIP and its working fine . But now a days we noticed that when users forwarding calls to another extension , other party is getting “Call from PRIVATE” screen .
We tried to check asterisk logs and every sip headers are applied and shows no errors.
Before compiling asterisk we did a patch from . This patch is for cisco phones.
We tired this from other SIP phones like Snom and all forward calls are showing without “PRIVATE” caller id .

Is there any option to resolve it? please help us.

Any update guys ?

We tried to change SEP files and asterisk sip header options but no hope.

did any one faced this issue ?