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?
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.
