An article takes you through various voice gateways

     In the deployment of converged communication systems, voice gateways with different functions are often used to achieve voice integration benefits. Now let's learn about the uses and characteristics of different gateways together!

First of all, we should have a brief understanding of the classification of voice gateways.

     Voice gateways are mainly divided into analog gateways, digital trunk gateways, transcoding gateways, wireless gateways, audio gateways, cluster gateways, etc. However, the first three are common gateway products when enterprises deploy converged communication networks.

     FXO gateway (Foreign eXchange Office) belongs to analog gateway. It is used to connect the central office operator lines with telephone switches or SIP telephone platforms. The FXO gateway connects to the VOIP system through analog telephone lines. The upper end of the FXO gateway is connected to the operator's line, and the lower end is connected to the SIP platform (IPPBX, VOIP platform, call system platform), converting analog signals into IP signals to realize the functions of making external calls and receiving incoming external calls. One port of this gateway can only support one call, but it can reduce telephone wiring and make the overall vision of the office more tidy.

        FXS gateway (Foreign eXchange Station) belongs to analog gateway and is used to connect traditional telephones. After a regular telephone is connected to the FXS port, it can provide current and dial tone for the telephone, and can also connect a fax machine.

        The FXS gateway is connected to analog telephones, converting analog telephones into SIP data packets, so that analog telephones can be used for calls in a VOIP-based system. However, analog telephones have gradually been replaced by IP phones with better compatibility, stronger functions and no need for wiring, so FXS gateways may become more declining.

       Digital trunk gateway supports various access methods such as ADSL and optical fiber, which can realize flexible expansion of communication channels and high-speed access. One line can support multiple numbers and multiple concurrencies (supporting 30 calls at the same time). The E1 gateway can provide up to 128 interfaces, and it is easier to maintain because there is no need to deploy analog lines. For enterprises with a large number of agents, digital trunk gateways are also cost-effective.

       Based on the business needs of different industries/operators, the transcoding gateway can provide enterprises with a flexible communication network. The transcoding gateway supports SIP signaling protocol, multiple codecs, and provides perfect codec conversion. It is widely used in softswitch systems that need to solve voice coding adaptation with high quality, as well as various scales of voip voice access to IMS networks such as call centers, operators and large enterprises.

       Audio gateway is also called mixer gateway or four-wire gateway. Its main function is to connect the mixer and audio equipment of large conference rooms to the SIP-based VOIP system.

     Cluster gateway is also called intercom gateway or radio gateway. Its main function is to convert various intercoms and radios into SIP protocol to communicate with the telephone system. Cluster gateways are widely used and very convenient when used with dispatch command systems developed based on SIP protocol.

     At present, the market mainly includes these types of gateways. Then, how should enterprises choose when building an internal and external interconnected telephone network?

     First, determine the overall plan according to the scale. Gateways such as FXS and FXO are economical and low-cost. If the number of agents in an enterprise is less than 30, you can consider choosing an analog gateway; Digital trunk gateways have large capacity, multiple functions and strong operability and maintainability. If an enterprise has more than 30 agents, or a small enterprise has future expansion needs, you can choose a digital trunk gateway.

      In addition, in addition to paying attention to the basic functional parameters and price of the product, stability, ease of installation and configuration, and after-sales maintenance are also factors that enterprises should consider when purchasing. For more information about the parameters of Kangyou Kaixin IAD900 series voice gateway devices, please feel free to call us for consultation!