pradeepgali,
Well, by default on a SIP Peer for a CO Trunk Group that is already set to yes for Early Media Supported.
You may need to verify since this could be different in older versions.
Turn on On-Line Monitor and go to SIP Peer > SIP Trunk Group > 9xxxx > Configuration
Look for Early Media Supported and set it to yes if it is set to No.
Thanks,
TE