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Gateway Grandstream: Analog adapters for Internet protocols

Telephone infrastructures have allowed communication for years, now all systems have been changed to digital, using Gateway grandstream can adapt analog phones to receive VoIP calls.

What is an analog adapter?

The Analog Telephone Adaptor (ATA) is a device capable of converting the signals used for analog communications into the Internet Protocol (VoIP).

Generally these adapters are used to convert the digital signal (own or IP) in the analog signal, so you can connect to traditional phones (analog) or facsimile (also work transforming the digital signal to analog).


Why are they called Gateway?

centralita ip

Analog phone adapters can be described as Gateway because their operation is precisely the connection between both worlds (analog and IP).

However, we must be clear that a Gateway is described as a multi-port telephone adapter, which is almost always accompanied by more complex routing functions.


Disadvantages of ATAs

The main disadvantage of using these ATA devices is that you cannot enjoy all the benefits of IP telephony.

Differences between analog and digital (IP) phones

Before we continue talking about Gateway grandstream, ATA and digital telephony we will proceed to explain what is analog telephony and digital telephony.

Analogue telephony


An analog telephony is one that uses “waveform signals”.

It may be the best known type of signal, and undoubtedly the oldest. Remembering that the signalling between a telephone exchange and a telephone is the ability to receive and send information, among which stand out:


  • The start of the conversation is requested.
  • Select who to talk to
  • There is progress in the call (ring, busy ring)
  • If you initiate a new call

Brief history of analog telephony.

In the beginning the telephones used only a copper wire, so in this way, the audio was sent as signaling while the return was done by land.

As the number of telephones increased, it was necessary to increase them to a second wire per telephone (to avoid interference).

Characteristics of analog telephony.

Analogue telephony has the following characteristics:


  • Only one communication per contracted line.
  • More suitable for residential market
  • Numerical identifier (DDI) on each line.

Digital Phones

In the early 1980s, the foundations were laid for new telephone networks, where digital terminals were offered to customers.

The idea of digitally covering telephony merits the implementation of a digital signalling protocol between the device and the telephone exchange.

The ISDN protocol was designed, which consists of establishing a data channel between the telephone exchange and the device in order to be able to exchange messages.

The signal protocols used are generally “proprietary” by each of the manufacturers, only a few use the standard protocol ISDN.

Characteristics of digital telephones.

Among the most salient features are the following:



  • ISDN lines (BRI) allow 2 simultaneous calls using 2 channels of 64 Kbps (voice and data).
  • Adapts to a central for a single DDI (for outgoing calls).
  • ISDN lines (PRI) up to 30 simultaneous calls using 30 64 Kbps channels (for voice and data)
  • Its target is the business market.
  • The sound quality is better than analog (no noise or interference).

IP Phones


After the standardization of digital telephones, it evolved into telephones with the capacity to transport multimedia data through data networks.

IP phones have the ability to digitize the voice in the terminal itself, to pack and send data using the network (must use IP protocols).

The advantage of these terminals is that they can be “virtual” using applications. At the corporate level they usually use SIP protocols, in many cases using Gateway grandstream to carry out this task.

Features IP Phones.

IP phones have the following features:



  • No dependence on physical lines, rather merits a network infrastructure, no limitation on simultaneous calls
  • Telephone numbers hosted in the cloud of our telecommunications service provider. There are no limits when it comes to contracting telephone numbers, as well as geographical location we want to choose (there are regulations to be respected).
  • By not relying on physical lines you can create a network with a large number of locations.
  • Allows the interconnection between networks of stores, or delegations so that they are connected using a single header number.
  • Allows the interconnection between networks of stores, or delegations so that they are connected using a single header number.

Grandstream VoIP Gateway

Grandstream’s VoIP Gateways will act in several ways, the most important of which are the following: Gateway to other networks, as well as a platform to unify analog and digital communications.

Analog adapters enable the integration of analog devices into the VoIP PBX.

Features of Gateway grandstream.

Here are some of the features of the grandstream gateway

Analog adapters are robust.

No need for a server

Different SIP, ISDN or analog interfaces

Low energy consumption

Enables integration with analog devices

What does Grandstream offer?

Grandstream’s Gateways are ideal for any company that needs the incorporation of IP technology.

It is also ideal for taking advantage of investments made in traditional equipment (analog telephony, faxes and PBX systems).

Gateway Grandstream Recommendations

There is a wide variety of products and series available from Gateway grandstream that can be better adapted to your needs, we explain in a general way:

Models GXW4104/4108

These grandstream Gateway devices have the ability to convert IP calls into traditional calls.

The GXW 4104 offers 4 ports while the 4108 offers 8 FXO ports, both are installed the same way. These grandstream gateways offer the most complete interoperability with IP PBXs, IP servers and softswitches.

Models GXW4216/GXW4224/GXW4248

Gateway grandstream models have from 16 to 48 analog ports (FXS). In addition, these Gateway devices come with advanced security protection, unsurpassed voice quality, easy to configure, and excellent performance with high call volumes.


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Neotel Virtual PBX’s

In a world where technology is growing non-stop, it is ideal that you and I are on a par with it, these advances integrate many aspects and one of the most striking is related to the way we communicate and that is why today we find the virtual pbx’s.

What is a virtual pbx, if you skip that doubt do not worry that Neotel has the answer for you, a virtual pbx is nothing more than an IP telephony system through which we will be able to have multiple phones and / or extensions independent of whether they are fixed or mobile, this translates into availability anywhere, when you purchase a virtual switchboard you have advantages such as:


  • Saving money
  • Accessible maintenance
  • To have extensions as mobile as fixed

Neotel reminds you that telephony, being based on the IP protocol, can integrate both voice and data in the same network.

If you are interested in acquiring a virtual switchboard, Neotel has for you both Yealink terminals and Grandstream Gateways and this because Neotel focuses on two key aspects that are:

  • Sale of virtual switchboards
  • Sale of software focused on Call Center

Neotel offers support, configuration and assistance at all times to bring quality products in both Yealink terminals and Grandsream Gateways.



If you want to be in the world of IP telephony, but do not have the means to purchase an IP phone, Neotel offers you the Gateway which is a machine which connects to a traditional phone converts it into an IP phone, for this Neotel offers Grandstream Gateways as the GXW4104, the GXW4108 or the GXW4216.

telefonía ip

Now, if your plan is to acquire any of the Yealink terminals, Neotel offers you solutions like the Yealink T19E2, the Yealink T21E2 or the Yealink T27G.

Thus, Neotel is in step with the growth of technology offering quality products, reliability and above all comprehensive performance that will undoubtedly make communications much more centralized thanks to the use of Yealink terminals or the implementation of a Grandstream Gateway.


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Get Grandstream VoIP Phones and Boost Your Business

The GXW4104 is one of Grandstream’s most prominent gateways, with all the features you need to boost your business. It helps facilitate deployment to allow multiple locations to be connected to one device. Some of the notable features of this phone include the following:

  • Four ports
  • Advanced security protection with SRTP
  • 10-100 Mbps network ports
  • Support for codecs, flexible dialing plans, and security protection.

One of the main advantages of Grandstream Gateways is that they are very affordable. There are other products like GXW4108, GXW4216 that can help you achieve significant results for your business.

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A complete overview of the different types of Grandstream Gateways

No matter the size of the business, the use of Grandstream Gateways is the most effective means by which you can add your office environment with efficient terminology through the integration of some traditional telephone systems directly into the VoIP network. This could be keeping your communication costs down.
Now let’s talk about the Grandstream GXW Gateway series! This system is designed to achieve full interoperability across all major IP-PBX media as well as most SIP-based environments. The GXW410x models where we have the names GXW4104 and GXW4108 somehow provide the first IP video surveillance port.
Grandstream Gateways are used in both FXO models to connect VoIP telephony systems to public switched telephone networks (PSTN).

Why buy Grandstream Gateways?

These gateways are extremely powerful, as in the case of the all-in-one solution of voice + fax + video + data communication when dealing with small and medium enterprises. It makes the use of simple web management for the sake of a natural series of configuration as well as installation. It offers convenient access to the video surveillance port, and can often be used as a stand-alone gateway for IP communications.

Grandstream GXW4104

The Grandstream GXW4104 is identified as the medium of 24 FXS VoIP gateway ports. This gateway is very necessary to carry out the complete connection through analog devices such as telephones or even your faxes to any VoIP network. It can support so many different voice/fax codes also in terms of the combination of 24 RJ11 FXS ports. It also features the use of a 50 pin telecommunications connector which could be making the GXW4104 versatile for a wide variety of uses.

Grandstream GXW4108

The Grandstream GXW4108 is identified as the 16-port FXS VoIP gateway. This medium is used to connect analog devices by adding telephones and faxes to the side of the VoIP network. It can support so many different voice/fax codes also in terms of the combination of 24 RJ11 FXS ports. It also features the use of a 50 pin telecommunications connector which could be making the GXW4108 versatile for a wide variety of uses.

Grandstream GXW4216

The Grandstream GXW4216 analog FXO gateway is most often used in small businesses or even in some remote locations. It allows you to connect up to 4 PSTN lines in the current IP PBX system category or even in the analog phone system timeline. The GXW4216 makes you offer around 4 FXO ports that could be allowing you around four lines to connect to the PSTN. It consists of 2 switched 10/100 Ethernet ports that are often used as routing to connect to any course on the network.

Grandstream GXW4224

The Grandstream GXW4224 is defined as a 48-port FXS VoIP gateway that is primarily used to connect analog devices where telephones and faxes can be connected to a VoIP network. It is also playing an important role where it can support several voice/fax codes and a combination of 48 RJ11 FXS ports and a 50-pin Telco connector that makes the GXW4224 versatile for so many uses.

Grandstream GXW4248

The Grandstream GXW4248 is purposely known as the 32-port FXS VoIP gateway where you can make use of it to connect analog devices including telephones and faxes to a VoIP network. It also supports a different set of various voice/fax codes, as well as the combination of 32 RJ11 FXS ports.

List of Yealink’s best products:


Yealink T19E2

The terminal makes its features with full access of 4 sections T1/E1/J1 and can also support 120 simultaneous calls.

Yealink T19PE2

The terminal connects with 2 T1/E1/J1 span features, and can also support 60 simultaneous calls.

Yealink T21E2

The terminal is added with 1 T1/E1/J1 span features and also supports around 30 simultaneous calls.

Yealink T21PE2

The terminal is a complete set of analog telephone adapters. It is configured with 1 FXS port and 1 FXO port. This can allow users to connect almost two profiles. It makes it feature with the Lifeline Support System and fax T.38 for the over-IP fax well.

Yealink T23G

The terminal is identified as the 8-port FXS VoIP Gateway which is placed together with dual 10/100 ports as well as some excellent routing capabilities.

Yealink T27G

The terminal makes its features with full access of 4 sections T1/E1/J1 and can also support 120 simultaneous calls.

Yealink T40G

It is also playing an important role where it can support various voice/fax codes and a combination of 48 RJ11 FXS ports and a 50-pin Telco connector that makes the GXW4224 versatile for so many uses.