Asterisk PBX, Asterisk Billing (A2Billing), VOIP, Linux OS, Servers. OpenSER, SER, FreeRadius, Mediaproxy, Asterisk Billing (A2Billing), Radius Billing,VOIP, Linux OS, Servers.
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AGI, perl scripting,Asterisk + A2 Billing, Asterisk + CRM,Asterisk + vicidial, Calling Cards,Elastix, gnu dialer,Fax solutions, Fax & Voice broadcasting solutions,Call conferencing solutions, IVR solutions & Support for digium Hardware,Sangoma E1/PRI/ FXO Digital , analog Telephony Cards,grandstream.
Viettel Group is one of leading telecom service providers in the world with over 50 million subscribers. Wireless Intelligence has ranked Viettel Group as the 19 th out of 784 biggest telecom service providers in the world regarding the number of subscrib
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