I think India uses polarity reversal to indicate start of caller id on PRI line, which i guess is not fully supported by FreeTDM yet. However, you can try the following FreeTDM options, though i am not sure if they will work.
<param name="tonegroup" value="in" />
<param name="enable-callerid" value="true" />
<param name="answer-polarity-reverse" value="true" />
You may try to set last parameter to false and test again. Do let us know if it works or not.
I am not much familiar with FreeTDM code, nor got the equipment to test, so for those who have, please see below link regarding same problem in Asterisk and how they solved it,
Hope this helps.
Thank you.
--
Muhammad Shahzad
-----------------------------------
CISCO Rich Media Communication Specialist (CRMCS)
CISCO Certified Network Associate (CCNA)
Cell: +92 334 422 40 88
MSN: shari_786pk@hotmail.com
Email: shaheryarkh@googlemail.com