Diploma

You have 3 options after doing diploma in electronics and communication engineering:
1)Higher Studies:
You can do B.E/B.tech (4 years duration) which provides more knowledge related to your branch,grows opportunities for getting good job in terms of post,salary from a reputed company.
2)Go for Job:
You can directly do job after diploma if your score is more than70% along with the deep practical and theoretical knowledge and good communication skills.
Government companies:
BHEL
ISRO
NTPC
CDAC
ECIL
BSNL
Private companies:
LSI Logic
Honeywell
Wipro
Intel
Cisco
TCS
3)Short-term courses:
If you feel that any two of the above options are not good for you,then you can go for short-term courses(4-6 months each) like:
1)Embedded Systems
2)VLSI
3)Networking(CCNA)
4)Robotics
5)SCADA Communication.