Building a Voice Over IP (VOIP) Service
VOIP services are needed by telecommunication company since many subscribers has many purposes by doing that such business activity, contacting their family etc. Telecommunication Company prefer to provide international call service with VOIP rather than International Direct Dial (IDD) service which need a license from the regulatory institution beside it gives cheaper tariff. From subscribers’ view, the different between both VOIP and IDD service is while they make a dial session. VOIP service is valid to their subscribers only and subscribers should dial with additional prefix. Meanwhile, IDD service is valid to any subscribers from any telecommunication company with certainty prefix number which already given by regulatory institution.
It is different with IDD service, while Telecommunication Company decides to build a VOIP service, there will be some network infrastructures needed to be inserted to the current one. VOIP service is running on the existing network, telecommunication company just need to make sure that the call was delivered to the destination at abroad and conversation happen between calling and called number. Generally, the new network infrastructures that needed are;
- VOIP gateway
- International Link/Bandwidth
- International VOIP partner
The international call from subscriber will forwarded from Mobile Switching Centre (MSC) to VOIP gateway and digit translation is happening here. This new digit number will be encapsulated to the IP base packet and will be delivered to the International VOIP partner. VOIP gateway responsible to covert traditional call bases (ISDN and Signaling) coming from subscriber to the IP base packet.
Since VOIP service is international call base, telecommunication company should deploy international link or bandwidth to deliver and retrieve a packet. It is like a bandwidth needed by mobile internet service.The international link could be dedicated E1 transmission that will be terminated from Telecommunication Company to the international partner. Usually, Telecommunication Company prefers to provide internet bandwidth to deliver the VOIP traffic since they can insert it to another service which requires internet bandwidth as well such as mobile internet service .
Telecommunication Company did not deliver the VOIP traffic to the destination number directly. The international call will be forwarded to their international VOIP partner at abroad and let them deliver it to the proper destination number. International VOIP partner may forward the call to the destination number directly through VOIP service as well or they will forward it to their partner as well. It is depending on the level of international VOIP partner has been chosen by Telecommunication Company. Telecommunication Company also can connect their international call to several International VOIP partner to distribute various traffic scenario. This scenario usually was applied to give various tariff calls to certainty countries
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Building a Voice Over IP (VOIP) Service
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Nice post. It was helpful and informative. hope to see more greats posts like this.
Telco indonesia is not a good VOIP company there prices are not good sir.
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Great information! Thanks!
The VOIP system’s minimal requirement for hardware and software, made it very affordable to big and small industries.
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Hey! Thank you, this has helped my research a lot!. Ironically, I have been reading about voice over IP for the past 5-6 days but I didn’t see any product which lets one to dial free calls to Russia, I saved 4 or 5 sites that gave free calls to the United States but couldn?t find any for the the opposite so have you found any product that allows you to make unlimited calls? Please email me!
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Nice blog, I found you while searching on Yahoo. Does anyone know where to find a voip tutorial? I really would like to get started using a voip service.