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 | VoIP Trunking In the modern telephony standards, there is a more technical and cost efficient way of connecting your external phone lines to your company's PBX; VoIP trunking. Vovone offers optimized and secure VoIP trunking available for IAX and VoIP bundles for SIP and H.323 protocols. Both are virtually unlimited in number of lines, based on IP network connections, like DSL, Fiber and even Cable. The VoIP trunks and bundles are only limited by the bandwidth that is available on these IP network connections, and calls can be optimized in bandwidth usage when using different voice codecs. For instance, the default G.711 codec, the voice codec that is used for conventional ISDN lines (BRI/PRI), consumes about 64kbps of bandwidth per call plus about 2kbps (= total of 66kbps) to put it into an VoIP packet and for the first call in a trunk we have about 16kbps 'overhead' bandwidth to setup and manage the virtual VoIP trunk, which results in about 14 possible concurrent VoIP trunk calls over a single 1mbps DSL line (16 kbps + (14 x 66 kpbs) = 940 kbps or 0.94 mbps < 1 mbps. In this case you still have the same voice/sound quality as with conventional ISDN trunks, so 14 virtual 'ISDN quality' lines for the price of a single 1mbit DSL connection cost. When using the G.726 codec, the same codec used worldwide by conventional telecom companies when routing international calls, you get 28 lines per 1 mbps DSL line, that's about the same as one ISDN PRI-30 line. And when using the GSM voice codec, which is the same voice codec as used with GSM cellular phones, you are able to get up to 67 concurrent phone calls per 1mbps IP internet connection, that is more than two conventional ISDN-30 PRI trunks for the price of a single 1 mbps DSL line... There are more voice codecs available for the VBX-Series as options, but we install default these three voice codecs (G.711, G.726 and GSM) since they are widely used, robust and more important; license free. Beware that only with real VoIP trunking the bandwidth overhead is only once per trunk. If you have non trunked VoIP connections per device, the overhead is added with each call. Find below more figures with different codecs, which will be updated when more codecs become available. So how does this work in the real world? If your company's PBX is VoIP (IAX, SIP, H.323) compatible, you are able to connect to Vovone's network and route your outbound telephone calls over Vovone, and start cutting costs on your call, on average around 50% up to 95% on your monthly phone bill! For inbound calls, we can provide (regional) phone numbers in selected countries all over the world and/or port your existing phone numbers to our network., just like conventional phone companies. You won't notice any difference; if you use the default G.711 (ISDN) voice codec, everything just will be the same as when you use conventional ISDN BRI/PRI trunks, except for you wallet... that one will feel the difference for sure. | |||
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