What is a VoIP Gateway?
A VoIP gateway (or PSTN Gateway) is a device which converts telephony traffic into IP for transmission over a data network.
How are they used?
To Convert Incoming PSTN / Telephone Lines to VoIP/SIP
The VoIP gateway allows calls to be received and placed on the regular telephony network. In many business cases, it is preferable to continue to use traditional phone lines because one can guarantee a higher call quality and availability.
To Connect a Traditional PBX / Phone System to the IP Network
The VoIP gateway allows calls to be made via VoIP. Calls can then be placed via a VoIP service provider, or in the case of a company with multiple offices, interoffice calling costs can be reduced by routing the calls via the Internet. VoIP gateways are available as external units or as PCI cards. The vast majority of devices are external units. A VoIP gateway has a connector for the IP network and one or more ports to connect the phone lines to it.
Types of VoIP Gateways
Analog units are used to connect regular analog phone lines to the gateway. Analog units are available for between 2-24 lines.
Digital units allow you to connect digital lines, either one or more BRI ISDN lines (Europe), one or more PRI/E1 lines (Europe) or one or more T1 lines (USA).
Types of Analog Gateways
Types of Analog Gateways
An FXS gateway is used to connect one or more lines of a traditional PBX to a VoIP phone system or provider. Alternatively, you can use it to connect analog phones to it and re-use your analog phones with a VoIP phone system. You need an FXS gateway because you want to connect the FXO ports (which normally are connected to the telephone company) to the Internet or a VoIP system.
An FXO Gateway
To connect analog phone lines to an IP phone system you need an FXO gateway. This allows you to connect the FXS port to the FXO port of the gateway, which then translates the analog phone line to a VoIP call.
An FXS adapter a.k.a. ATA adapter
An FXS adapter is used to connect an analog phone or fax machine to a VoIP phone system or to a VoIP Provider. You need this because you need to connect the FXO port of the phone/fax machine to the adapter.
Equipment and Installation
Installing VoIP service is not as simple as plugging in a telephone. You may have to connect equipment and adjust to a new system. Note that there are different ways to use the technology: An analog gateway works on your regular phone to enable VoIP calls. Or you can use special Internet telephones, known as IP phones, that look like traditional phones but have all the software and hardware necessary to connect directly to your computer’s router to make or receive calls. If you use VoIP to make computer-to-computer calls, you’ll need special software, a microphone, a sound card, and speakers. If you’re using VoIP and a phone adaptor to make calls, your computer doesn’t have to be turned on as long as your broadband Internet connection is working.
Types of ISDN Gateways
BRI & PRI Gateways
The digital ISDN BRI gateway and ISDN PRI gateway offer an ideal solution for any business, in areas where the infrastructure is still ISDN
4G LTE Network provides businesses with an essential Internet continuity option when the PBX’s primary Internet connection fails. With 4G LTE failover, SIP trunks are even more resilient.
Communication is a key facet of success for businesses, and today’s technology facilitates global communication more than ever. With the advent of VoIP technology, fluctuation-free calling experience with high call quality and stability is no longer a dream. Yet the innovation never ends to improve voice performance. What lies ahead is a next-level calling technology—VoLTE (Voice over LTE), through which companies are able to reap the benefits of an all-IP network and skyrocket communications.
By VoLTE technology, voice calls are routed over 4G LTE Network that carriers use to transmit data, which means better quality voice calls and more network efficiency. Ranging from superior HD voice quality to faster call setup time, VoLTE technology provides companies with a wide range of benefits.
VoIP Gateways bridge the gap between FXS, FXO, PRI, BRI, GSM, 4G LTE, and IP networks to reduce operating costs and deliver the convenience of traditional telephony circuits to a wide range of manufacturer VoIP phone systems.