Voice over IP (VoIP) is a hugely popular service and is being deployed by traditional wire line telcos, competing ISPs, and Internet-based VoIP providers such as Vonage and Skype. The competitive landscape is pushing traditional carriers toward migrating their traditional TDM-based switches to more cost-effective packet-based ones. Additional services can be delivered using online self-provisioning tools. A customer can log on to his or her portal, enable the second VoIP line into his or her home, and select a range of voice mail and unified messaging options. Many of the more powerful features of use to businesses can be ordered online, too. An extra ten outgoing lines from a business PBX can be enabled at the press of a button, for example.
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This section explains some of the VoIP services that providers can offer to customers. Even though VoIP services can be offered over any IP connection, the target audience for this section is wire line providers delivering voice services. Purely Internet-based providers such as Vonage and Skype share some similar attributes, but their services are more Internet-based and are not covered here.
Designing and deploying triple-play services
How to provide business VoIP services
Providing business VoIP services through a digital subscriber line access multiplexer
How to design and implement a business VoIP network
Reproduced from Chapter two of the book Broadband Network Architectures: Designing and Deploying Triple-Play Services by Chris Hellberg, Dylan Greene and Truman Boyes. Copyright 2007, Cisco Systems, Inc. Reproduced by permission of Pearson Education, Inc., 800 East 96th Street, Indianapolis, IN 46240. Written permission from Pearson Education, Inc. is required for all other uses.