| Solwise VoIP Solutions |
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VoIP is the method in which the ordinary telephone calls are transmitted over the Internet using packet-linked routes. VoIP does not only transmit the calls rather fax and other information over the Internet can also be transmitted over Internet, which is charged at the rate of the users usual (local) Internet connection charges regardless of where they are calling or transmitting information anywhere in the world, which is certainly a danger to the conventional billing model wherein the telephone services are distance and time-based. This is possible because VoIP telephone calls (voice) evade the classic public-switched telephone network and put on the air voice calls over a private network which is used to carry web, e-mail and data traffic. Now when nearly everyone look forward for un-timed and effectively un-limited connection to the Internet, wherein the users can spend all day downloading data from the other side of the world at no added cost. VoIP has extended this capability by allowing users to make calls through Internet. And yet, when those same users make a phone call they are charged by the local Internet usage, whether the call is local, national or international. Another big advantage of VoIP is to replace the expensive telephone system that most companies require. VoIP developed the new concept where the computer hardware such as servers and Ethernet cables handles the telephone traffic. Telephone system functions such as call-transfer and hold could be handled by software and telephone devices could just be plugged into a network point instead of dedicated wiring. VoIP Phones connect directly to your LAN via an RJ45 Ethernet connection and provide you with the quick and easy access to Internet based telephony. A VoIP Gateway is a device, which connects a telephone device or line to a computer network. One end of communication where there is computer connection, devices may just have an Ethernet connection or they may incorporate a cable-modem or ADSL modem. All the products available from Solwise have 10/100 Mbps Ethernet ports for their network side connection. But on the other extreme, all the Solwise products provide standard analogue (also called PSTN or POTS) connections. Such connections come in two flavors: FXS use with devices like phones, fax machines or PBX trunk ports Generally a VoIP gateway can be used to communicate with anyone else on the Internet who is similarly equipped, or has software to drive their PC/Soundcard. For best performance it is preferred that both ends have some for of broadband connectivity. Commonly used configuration is when two or more sites connect for free calls between the sites. There may already be a data-link between the sites or the prospect of free-calls may be the spur to set this up. Each telephone conversation requires a channel of less than 10k, so any data-link from 64k up would be reasonable as long as it is fairly stable, has a small delay and is not already congested. A user has multiple options like: Direct wired/RF/IR/Microwave Ethernet connection or Leased Line or ISDN/ADSL/Cable Modem dialup/FRIACO accounts with suitable ISP. Solwise utilizes two main protocols for using VoIP are MGCP and H.323. The Solwise products along with many others support each of these protocols. The principle difference between the two protocols for the beginner is that MGCP requires a call agent. This is a piece of software or hardware responsible for the routing of calls. A simple H.323 setup can be configured with all routing information held within the voice gateway itself. In a very simple H.323 setup a call can be placed between two phones, connected to gateways, by just dialing the IP address of the other gateway. Solwise VoIP has user-friendly interface that can be installed easily and conveniently with VoIP management tools such as Elite Server to yield immediate cost savings. The Solwise range supports Voice over IP (VoIP), as well as Fax over IP (FoIP), and they seamlessly bridge existing PBX or phones with IP networks. Its scalability satisfies users needs for system growth without additional software or complex integration. Solwise gives their users with the support of various types of network configurations and requires very little maintenance or administration. They are fully interoperable with world-renowned VoIP gateways and PBXs. Furthermore the range may coexist with broadband access devices for ADSL or CAT5 networks. Even though a VoIP system can be made in effect visible to voice traffic, the support of legacy signaling, particularly the ‘recall' signal, is poor or non-existent in most VoIP hardware. This ‘recall' signal is used to put a call on hold or transfer it to another extension on the head-office PBX. It is sometimes called a TLB or FLASH signal and is implemented by the telephone momentarily going ‘on-hook'. And to regenerate the recall signal at the head office end of the link, the TLB1 monitors the line and waits for a pre-programmed DTMF key sequence, such as ‘**'. And on receiving such a signal the TLB1 generates the recall signal for the PBX, thus placing the call on hold. The remote VoIP user then gets the dial tone or hold-tone from the PBX, just as if he were in the office. The TLB1 enables users to benefit from the use of potentially free inter-office calls via the Internet without sacrificing the capabilities of their office telephone system.
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