VoIP Gateway is a device which converts analog signals into IP, and vice versa. It converts TDM voice traffic from the PSTN into IP packets to transfer over IP networks. On the other hand, VoIP Gateway also converts IP packets into TDM voice flow to transfer through the PSTN.

 

VoIP Gateway is essential to VoIP systems because it is a bridge between the traditional PSTN with the IP phone system.

 

 

Easily connect to PSTN

VoIP Gateway supports the easy connection between VoIP with PSTN, it should be the need of any internal switching system.

 

Easily monitoring and managing the PSTN connection

Gateway supports the connection to PSTN channel supervision. It displays the status of each channel, so you can real-time monitor a particular channel.

 

Greatly support for statistical reporting

The Gateway can integrate with additional features, CDR, for example, offering better support for call statistical reporting.

 

Convert analog phone to IP phone with many outstanding features

With the enterprise using IPPBX system, saving the investment cost of IP phones can be more effectively by using VoIP Gateways. Gateways are created to convert traditional Analog Phones into IP Phones with analog functions.

 

Flexibility:

The incoming calls from PSTN to Gateway will be flexibly routed to the internal IP phone system, or to a specific user.

 

Saving money for your business:

The business that has two or more branches have been using the traditional PBX systems, which means if Analog PBXs want to call each other for free, the only solution is the VoIP Gateway.

Make cheap international calls using the VoIP Gateway to register with the VoIP service provider.

 

Model

 

 

Gateway consists of two types: Analog and Digital
Analog Gateway: a device used to connect traditional phones to VoIP systems, or connect VoIP systems to the PSTN.

FXS Gateway: Connect traditional phones, turn your traditional phones into IP phones.
FXO Gateway: Connect VoIP systems to the PSTN via CO lines.

Digital Gateway: Connect VoIP systems to the PSTN via Digital telephone lines, such as T1, E1.

 

a. Available Gateways:
Advantages:

- Easy to choose
- Easy to configure and manage.

Disadvantages:

- Limitation of scalability.

Deployment:

- Step 1: Select the type of Gateway: Analog or Digital, FXO or FXS.
- Step 2: Select the number of lines (an E1 line for 30 FXO lines).
- Step 3: Select the appropriate Gateway devices.
- Step 4: Gateway configuration and operation.

b. Self-construction Gateways:
Advantages:

- Easy to expand
- Customize altering functionalities (Digital Gateway, FXS or FXO)
- Easy to integrate with other applications.

Disadvantages:

- Build and configure more complexly, the specialized knowledge is required.

Deployment:

- Step 1: Select the type of Gateway: Analog or Digital, FXO or FXS.
- Step 2: Select the number of lines (an E1 line for 30 FXO lines).
- Step 3: Select an appropriate Card device.
- Step 4: Select the server according to the number of the connected channels.
- Step 5: Install the operating system and server, the card as Gateway.
- Step 6: Configuration and Operation.