As businesses continue to embrace IP-based communications, there is huge demand for solutions such as a virtual PBX. Infonetics Research (News - Alert) recently noted enterprises’ migration to IP and UC solutions is giving a tough time to top PBX vendors as they struggle to gain new customers and hold on to existing ones.

Toshiba (News - Alert) America Information Systems Inc’s., Telecommunication Systems Division (Toshiba) has achieved another significant milestone for its IPedge IP business telephone systems. These business phones are now certified with the AT&T (News - Alert) IP Flexible Reach SIP Trunking offering.

AT&T IP Flexible delivers integrated access for virtual PBX (IP PBX (News - Alert)), TDM PBX or key system environments, enabling significant cost benefits through the consolidation of voice and data. This solution also allows for a single provider, single transport and various management options. 

In addition, the managed VoIP solution offers multiple calling plans that support inbound and outbound calling on the data network, providing local, U.S. long distance and international reach for a business's U.S. sites.

AT&T IP Flexible Reach is supported by AT&T Managed Internet Service (MIS) and AT&T VPN services. The company also supports a wide variety of access speeds, from a single T1 to Gigabit Ethernet. These services leverage AT&T's Global MPLS Network, giving users the foundation for seamless voice and data communications.

Furthermore, AT&T IP Flexible Reach supports both local and Virtual Telephone Numbers (VTNs) which helps users to establish local visibility within that calling area. AT&T's Centralized Call Delivery can efficiently route calls originating from various locations across the country and then allows them to be answered at a preferred central location.

The virtual PBX extensions capability delivers telephone numbers for all branch office sites and is supported by a single centralized IP PBX, located at the IP Flexible Reach site. AT&T has a variety of calling plans to fit each business's needs, including local, long distance and international plans.

 "Toshiba's IPedge with AT&T IP Flexible Reach SIP Trunking allows businesses to converge their voice and data, improving efficiency by maximizing the use of the network capacity," said Mark Carpenter, vice president of technology and product management for Toshiba, in a statement.

 "With SIP Trunking, IPedge users can leverage unused bandwidth on the data network, increase network traffic using compression technology to push more voice traffic through the network, and consolidate resources for greater ROI," Carpenter added.