6. PSTN toll bypass

Aim: To use internet to provide cheap inter-country calling

Vega gateways, together with Application servers supporting pre-paid card services allow

Telephony Network

E1 Euro ISDN signalling is supported by Vega 400 and Vega 100

T1 NI1 & NI2 signalling is supported by Vega 400 and Vega 100

T1 Loop start, Ground start and Wink start CAS signalling is supported by Vega 400 and Vega 100

BRI Euro ISDN signalling is supported by Vega 50 BRI

Analog connection is possible, but is not preferred (for details on analog connectivity see later section)

IP Network

Recommend – private IP network between sites

Can be any reliable IP connection, including leased line, satellite and the internet

QOS should be implemented if possible to ensure that VoIP packets pass through the network in a consistent and timely manner and are not discarded by congested routers

The Internet is often used for carrying the VoIP traffic; contention and available bandwidth must be considered

User experience

The caller dials a local, often toll-free or lo-call telephone number and gets routed to a VoIP gateway. The call is answered by the Application Server and the user is asked to enter account number, pin and destination phone number. If the caller has sufficient credit the call is routed through to the most appropriate (Least Cost Routed) destination VoIP gateway and the gateway presents the call over the PSTN to the required destination number. If credit runs out during a call then the call can be torn down (terminated).

Version 2.1

16 March 2006

Page 16 of 33

Vega Gateway Scenarios.

©2005-2006 VegaStream Ltd.

 

Examples are given in best faith – ensure that you check the capabilities of systems before

 

 

deploying them, especially the functionality of devices not designed and delivered by VegaStream.

 

VoIPon Solutions www.voipon.co.uk sales@voipon.co.uk Tel: +44 (0) 1245 600560

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Polycom Vega Gateway appendix Pstn toll bypass, Aim To use internet to provide cheap inter-country calling

Vega Gateway specifications

Polycom Vega Gateway serves as a crucial component in modern telecommunications, bridging the gap between traditional telephony systems and Voice over IP (VoIP) networks. As organizations transition to digital communication solutions, the Vega Gateway plays a vital role in ensuring compatibility and enhancing connectivity.

One of the primary features of the Polycom Vega Gateway is its ability to facilitate seamless interoperability between different communication protocols. It supports a range of signaling protocols, including SIP (Session Initiation Protocol), H.323, and analog interfaces, making it easy to connect legacy phone systems to modern VoIP setups. This flexibility allows businesses to gradually upgrade their telecommunications infrastructure without the need for costly complete system overhauls.

The Vega Gateway is equipped with advanced transcoding capabilities, which enable the conversion of audio streams between various formats. This is especially beneficial in multi-vendor environments where different systems may use incompatible codecs. Its ability to transcode ensures high-quality voice communication regardless of the underlying technology, thus maintaining clarity and reducing latency.

In terms of deployment, the Polycom Vega Gateway can be implemented as both a hardware appliance and a virtualized solution, providing businesses with deployment flexibility based on their IT environment. This adaptability is crucial for organizations looking to optimize their resources and scale their telephony solutions as needed.

Security is another key characteristic of the Vega Gateway. It incorporates robust encryption protocols, such as SRTP (Secure Real-time Transport Protocol), to safeguard voice communications against potential threats. Additionally, the gateway features firewall traversal capabilities, making it suitable for deployment in various network environments without compromising on security.

The gateway is also designed with ease of management in mind. Administrators can configure and monitor the device through a web-based interface or command line, ensuring that managing the system remains straightforward even for complex setups. Logging and reporting functionalities further enhance administrative oversight, allowing organizations to analyze their VoIP usage and optimize resource allocation.

Overall, the Polycom Vega Gateway is a comprehensive solution that addresses the complexities of integrating modern VoIP technology with legacy systems. With its robust feature set, diverse technological support, and commitment to security and manageability, the Vega Gateway stands out as an essential tool for organizations looking to enhance their communication strategies in an ever-evolving digital landscape.