NTT Com to Expand Unified Communications Services for Arcstar Global IP-VPN

TOKYO, May 30, 2011 /PRNewswire/ -- NTT Communications Corporation (NTT Com) announced on May 30 that its Arcstar(TM) Unified Communications Services will introduce the SIP Trunking Plan to allow Arcstar(TM) Global IP-VPN users to dial external lines for high-quality, low-rate voice communications w

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