TATAdocomo google talk is not working

1.Go to Settings>>Data usage>>Check Mobile data should be ON.
2.Now comes back one level then click more (Settings>>more) then click Mobile Networks and select “Data enabled” & “Data roaming”.
3.Now, In same window click “Access point names”.
4.In next window select TATA DOCOMO INTERNET
5. Now click TATA DOCOMO INTERNET and then enter into settings page of it.
6. Now set it as following
Name TATA DOCOMO INTERNET
APN        TATA.DOCOMO.INTERNET
Proxy      Not set
Port         Not set
Username Not set
Password Not set
Server      Not set
MMSC     http://mmsc/
MMS PROXY 10.124.26.94
MMS Port  8799
MCC  405
MNC 039
Authentication type None
APN Type default,mms
APN Protocol  IPv4
APN roaming protocol IPv4