Origination and Termination Services
Call Origination is the collecting of the call started by a calling party on a PSTN, and handing off the call to a VoIP endpoint or to other exchange phone company for completion to a called party
Call Termination is a handing off or routing of calls from one Telephone Company to another.
BY Thomas Howe, chief Technology Officer and Versatel Networks
Let me ask you something. What came the egg, the chicken or 1st? a solution in VoIP is clear. On top of this, in 1996, at VoIP beginning revolution, voIP gateways were 1-st attainable ad product. The entrepreneurship model was straightforward and lucrative. 2 gateways were attached to conventional phone lines. Consequently, at 1st, a single clear channel T1 straight line was used to connect boxes. Needless to say, whenever resulting in a big cost savings, using the compression from gateways, service providers could fit 6 times the call to the bandwidth required with the help of one. That was fine since they were connected in static routes, at that time, gateways were pretty stupid devices. No intelligence required.
About 4 years later, sometime around 2000 as well as it happened to be clear that adding intelligence in middle should be a nice notion. Intelligent subject in the middle was called a softswitch. For instance, whenever choosing destinations based on cost, quality and likewise anything else you may just imagine, you could intelligently route calls betwixt gateways. The gateways were easier to configure now, too you didn't have to set up a dozen static routes. All you had to do was to point any gateway towards the softswitch. With that said, billing was better too. Whenever easing deployments, billing may be done at one place, in network center. This model worked well for adding applications, as the softswitch will direct calls to some central device that will provide service.
Except that they have been more flexible, intelligent media gateways are firstgeneration real evolution VoIP gateways, they handle media processing functions and usually can host short VoIP applications. Now please pay attention. Network planner has a powerful tool to handle dynamic and complex networks, with them. Intelligent media gateways get us to gateway 2-nd generation. That's interesting. They usually can be used any place a traditionary media gateway will. Then once more, unlike '1st generation' gateways, they have features that give them a far way greater degree of flexibility. Notice that rather vital feature of intelligent media gateways has always been that they depend on open standards as much as doable. Extends to hardware chassis and backplanes, this also includes call control and management protocols. You see, when having an entirely open gateway platform, service providers may readily choose 3-rd party technologies to involve in gateway. You should take it into account. In the future, you may even be able to mix and match outline cards from 2 intelligent media gateway vendors. This openness naturaly solves another pressing concern of gateways. Scalability probably was a critical feature as it reduces biz risk service providers no longer need to guess about network growth patterns, and overspend on initial purchases.
Now please pay attention. Another significant function has been potential to handle any combination of protocol conversion. Of course, generation' gateways have usually been fairly limited in what they usually can do. Finally, tDM to IP. With that said, they cannot handle IP to IP or TDM to TDM conversions. Oftentimes the potential to convert any protocol lets network administrator keep his internal network clean and consistent while accepting everybody else's VoIP traffic, with no regard to formats, when added to a gateway. [embed]https://www.youtube.com/watch?v=hbHk_DxeG2M[/embed] Yes, that's right! Must accept 323 or 729 traffic from smaller providers, this has probably been critical for larger service providers, who want to have clean 711 and 'SIP based' internal networks.
Seriously. Intelligence has been not something you should intend to see in a media gateway. When it is added, you add a the modern world of flexibility. Vendor, real physical place and for application intelligence, you will readily mix and match, before according to a single source. Here's an example. Now regarding the aforementioned matter of fact. Mexico will be heavily tarriffed when you don't terminate call in the land. However, quite a bit of your operation is located in newest York. Have you heard of something like this before? In the event you use an intelligent media gateway in Mexico to route the nearest calls.
This is the case. Media servers typically have processing responsibility voice. Intelligent media gateways could perform this task also. They may conference record audio, play prompts, calls and collect digits. It has been truly quite significant, even though it may seem like an useful but optional feature. While not sending the call back to the core for processing, potential to sort out voice enables a VoIP application to be housed in a single device. So, from a technical perspective, this reduces the bandwidth required between the remote sites and central facility. From an operations standpoint, you usually can certainly tie the application to a specific geography or a facility.
Ok, and now one of the most important parts. Another general use is always to extend legacy equipment. Doesn't it sound familiar? lots of rural nearest exchange carriers use older TDM switches to provide telephony service. They mostly look for that their options are rather limited when they might want to move to VoIP. They may replace the whole infrastructure, or they usually can set up a parallel infrastructure. Yes, that's right! Using an intelligent media gateway, they usually can add an elementary VoIP service and place it next to their legacy switch. They will start it little and grow it with revenue, cause it's scalable. Besides, their existing TDM customers could get newest gain service, just as in the event they were VoIP based, as it handles all protocols.This is the case. Just as minicomputers empowered smaller groups inside huge corporations, intelligent media gateways will do the same inside great service providers. Let me tell you something. Since they don't require a complete infrastructure. Just like minicomputers, they will be used to overcome concerns of legacy, performance, politics or even geography. Merely as minicomputers empowered smaller groups inside huge corporations, intelligent media gateways will do the same inside big service providers. And they have always been scalable, they provide perfect platform for smaller, niche service offerings, since they don't require a complete infrastructure. Like minicomputers, they could be used to overcome difficulties of legacy, performance, politics as well as geography. BY Thomas Howe, chief Technology Officer and Versatel Networks.
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