VIVA offers IP based Converged Communications Solutions. You may contact VIVA for SIP Trunking, IP PBX & PSTN integration, MS OCS & IP PBX integration, Managed VoIP and ''''Secure'''' VoIP.
hi i am hasib from Unitel Telecom.We provide A-Z route.Bangla Trac/TATA snd all primium route.
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