BSNL supplies ZTE AC8700 modem for EVDO users. The model is ZTE MG 478.

Information from product page:

Specification:
Frequency: 800MHz
Dimension: 80mm × 36mm × 12.8mm
Interface: USB
O/S: Windows 2000/XP/VISTA

Feature:
Voice call Dialer,Phonebook,SMS Manager,Call history
Compliant with CDMA2000 Read more of this...