Internet Protocol (IP), the packet technology used on the Internet, has proven its ability to efficiently integrate voice traffic into the flow of data on IP networks, enabling voice and data services to be delivered to users from a single multiservice network. Voice over IP supports two-way transmission of voice traffic over a packet-switched IP (Internet protocol) network. This network could be a public carrier network, the Internet, or a private enterprise intranet. The term "Internet telephony" generally refers to Voice over IP services transported over a public Internet backbone, but the terms are often used interchangeably. Voice quality on managed IP networks (controlled Internet backbones or an enterprise's private network) can match the public voice network. And IP networks are far more bandwidth efficient. Newer voice codecs (coder/decoders) consume only 8 Kbps to produce acceptable voice quality, compared to 64 Kbps with traditional networks. Combined voice and data communications over a single integrated platform built on packet technology offer the performance characteristics that voice service requires and provides: Sustainable cost reduction—Lowers capital and operating costs by converging separate voice and data networks into a single, multiservice network.
Increased revenues—Raises the value of voice service, with new applications such as video calling, unified messaging, and Web-enabled multimedia call centers. With multiple services available on a single customer link, providers have lots of opportunities to bundle, cross-sell, and upsell services.
Enhanced productivity—New applications such as collaboration and unified messaging enable enterprise employees, wherever they happen to be, to team more effectively and be more productive.
We at CTI provide design, installation, support, and maintenance service to all VoIP products Nortel has to offer, from a Succession Meridian 1-based PBX or a Business Communications Manager to a Modular ICS key system utilizing IP trunking with a Norstar VoIP Gateway, including the underlying data network infrastructure.
IP Phone 2002: IP Phone 2004:
 
1140e:
BCM: CS1000s:
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