Voice over Broadband (VoB) telephony

The world market for broadband access is constantly growing. Independent market researchers claim that there are about 250 million broadband lines worldwide by 2007. Broadband access provided through DSL or cable infrastructure enables a number of VoB (Voice over Broadband) services. Some of these services are provided by new service providers in the telecommunications field. Internet service providers (ISPs) are targeted at residential and small office / home office (SOHO) customers, bundling voice and data services into Internet telephony service providers (ITSPs). There is an independent market reporting project that from 2008's 20 million VOB lines, more than 9 million VoB lines are expected in 2008.

A typical VoB network has the following elements.

o Telephone adapter for connecting residential and SOHO users

Soft switches and application servers for call control, signaling, and network services

o Media Server for playing tone and announcements for extended services like conference

o Trunking gateway to interconnect with the Public Switched Telephone Network (PSTN).

o Session Border Controller (SBC) for interconnecting with other VoIP networks

AudioCodes & # 39; A wide range of media gateways and media servers are ideal for deploying powerful, reliable and scalable VoB networks. With a comprehensive product line, more than 10 years of experience, and a large installation base AudioCodes is the best vendor for service provider gateway and media server needs deploying VoB networks. In the center of VoB network, AudioCodes & # 39; MediaPackTM MP-20x telephone adapter.

MP-20x telephone adapter

The members of the MediaPack ™ analog VoIP gateway series, the MP - 20x series phone adapters are cost - effective cutting - edge products that connect common analog phones and faxes to the core of the VoB network. The MP - 20x series usually means an existing broadband Internet device (cable or DSL modem) and establishes a communication path with the service provider network via an IP uplink connection. The following figure shows an overview of two typical configurations of residence and SOHO awards.

The MP - 20x series provides up to two VoIP ports to connect up to two POTS lines or fax machines. The MP-20x series supports a wealth of subscriber call functions such as caller ID, call forwarding, and call waiting, and maintains a consistent user experience when migrating to VoIP service. In addition, the MP - 20x series supports PC or LAN hub / switch connection and also functions as a router including NAT (Network Address Translation), DHCP, and PPPoE functions required for simultaneous use of telephone and internet.

Using AudioCodes' The MP-20x series which adopts the VoIPerfectTM core architecture and profits from the experience of IP telephony solutions has T.38 fax relay and G.168-2004 compliant echo cancellation etc. , Excellent voice quality and state-of-the-art functions. Simultaneous use of low bit rate (LBR) vocoder (voice coder) on both telephony ports can save valuable bandwidth. The "Voice over Data" prioritization algorithm gives priority to degradation of voice quality even during a large amount of data transfer.

Advantages of introducing a telephone adapter

The MP-20x allows residential users to experience the same phone service as before. Users need to learn new information on the interface and usability of IP phones so that users can hold his POTS phone and apply standard dial pad and flash hook to continually use the phone service lose. Residential users who have cordless phones can use the house around them transparently. An additional advantage is the ability to connect a fax machine with a separate number assignment.

With the support of internal routers and firewalls, the MP - 20x can be deployed with settings to connect resident users. Using a home PC downstream of the phone adapter makes installation and configuration even easier. This will reduce "support calls" to service providers, allowing residential users a smooth transition to VoIP.

Utilizing the MP - 20x routing function, the voice quality is guaranteed by the voice pack that gives priority over the data burst, and the "VoIP experience" is further strengthened.

Future versions of MP-20x will support a combination of one FXS interface and one FXO interface. This allows fallback to the PSTN in the event of poor network quality, incoming calls to the same phone are allowed from the PSTN, and 911 calls to the normal PSAP can be routed through the PSTN.

Soft switch / application server

The MP-20x series is designed for full interoperability with major soft switches and SIP application servers deployed in various network environments. Over the years AudioCodes has made enormous efforts to comply with advanced and evolving VoIP standards. The support of Session Initiation Protocol (SIP), which is common in Voice over Broadband (VoB) networks, guarantees seamless integration and rapid deployment.

Media server

The media server provides enhanced voice services such as network tones and announcements, conference and IVR (Interactive Voice Response) functions, and messaging. Interoperable with key softswitch and application server, the IPmedia ™ media server is controlled to provide fluent network operation.

Trunking gateway

The media gateway provides a scalable means for interconnection with the PSTN consisting of a wide range of interface signaling (CAS, ISDN, IUA, SS7, M2UA, M3UA). The Mediant ™ Media Gateway, which controls the use of MGCP, Megaco / H.248, and SIP interoperable with major softswitches, allows VoB operators to call functions with other PSTN networks.

Session border controller (SBC)

With the Session Border Controller (SBC), the VoB network can peer with other VoIP networks, including home cleaning, to facilitate cheap interconnection and reduce long distance calling charges.