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Differences between VoIP and SIP

We have talked about the advantages of implementing and using VoIP technology in our organizations for various reasons ranging from economic budgets to availability of communication anywhere and it is key that we have defined some concepts that are used with some frequency in the world of communications because if we have at least a basic concept we can determine what type of hardware elements will be most suitable for VoIP to move like fish in the water or, in this case, as a bit in the network.

From the moment we are in search of the VoIP provider we hear some terms like SIP and, logically, VoIP, but do you know what the difference between VoIP and SIP? If not, stay with us and we will explain it to you, but before we remind you that you can acquire the Yealink terminals or the Grandstream Gateway so that your company is completely at the forefront of VoIP technology.

Differences between SIP and VoIP

Let’s start with the basics:


  • VoIP: is the acronym for Voice over Internet Protocol and basically consists of a technology thanks to which voice signals travel over the Internet optimizing their quality, reducing costs and reaching any geographical location and for this we have hundreds of elements both hardware and software.
  • SIP: is the acronym for Session Initiation Protocol and refers to a protocol that is used to implement VoIP technology. SIP protocol can be used to configure or terminate multimedia sessions within which we find both voice and video, although it is closely related to VoIP is not such technology itself.

SIP: is the acronym for Session Initiation Protocol and refers to a protocol that is used to implement VoIP technology. SIP protocol can be used to configure or terminate multimedia sessions within which we find both voice and video, although it is closely related to VoIP is not such technology itself.



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Features of Yealink T46S terminal

Yealink presents the T46S terminal as a bet to establish and define communication as a key point for both executives and time-constrained professionals since the T46S terminal has been developed to provide better all-round performance than its predecessor the Yealink T46G terminal, In addition, the T46S has been integrated with Yealink Optima HD technology and the Opus broadband codec has been added, both technologies will give a much sharper communication that is the expected result of Yealink.

If you are concerned about connectivity, with the Yealink T46S terminal you can stop worrying because it is compatible with Gigabit Ethernet technology, thanks to which we can manage and manage calls much better and has extra accessories such as the Bluetooth USB Dongle or the Wi-Fi USB Dongle which will allow us to extend the connection capabilities of the terminal.

Among the main features of the T46S terminal are the following:


  • Opus codec integration for clear calls
  • It has Yealink Optima HD Voice technology which mixes hardware and software to make every call unique.
  • The headset is compatible with hearing aids (HACs) which improve listening levels for users with hearing impairment.
  • The Yealink T4S terminal supports massive implementation which integrates with Yealink’s own redirection and provisioning services (RPS), this will make the entire assembly process is simple and if that’s not enough a boot mechanism is integrated focused on executing the Zero Touch provisioning optimizing both the assembly and the update of the T46S terminal.
  • Has unified firmware and an auto-p template
  • Two Gigabit Ethernet ports, one of which is designed for the Power over Ethernet (PoE) function
  • A USB 2.0 port is included which we can use Bluetooth, Wi-Fi and USB technologies.
  • Yealink T46S terminal supports up to six expansion models
  • Your screen has LED system to highlight the display of information
  • Can be programmed with up to 27 DSS keys
  • The Yealink T46S terminal makes use of the SIP protocol based on TLS / SSL
  • Compatible with 3CX and Broadsoft Broadworks switches

Now to encourage you to buy the Yealink T46S terminal, technically the following is offered:

  • Supports Opus, AMR-WB (optional), AMR-NB (optional), G.722, G.711(A/µ), G.723.1, G.729AB, G.726, and iLBC codecs
  • HD Voice, HD Headset and HD Speaker
  • Features a full-duplex hands-free speaker compatible with AEC, VAD, CNG, AEC, PLC, AJB and AGC
  • Supports up to 16 VoIP accounts
  • Offers features such as Call Waiting, Silence, One-Touch Speed Dialing, Hotline, Call Forwarding, Call Waiting, Call Forwarding, SMS, Emergency Call and more
  • Supports up to 1000 directory entries
  • Improved DSS keyboard
  • Auto provision using FTP/TFTP/HTTP/HTTPS
  • Compatible with IPv6 and many additional features

The Yealink T46S terminal is one of Yealink’s best proposals for robust, secure and fully dynamic equipment.

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Why buy Grandstream Gateway 4224

Grandstream is the leading developer of products to optimize SIP unified communications by making all users connected to each other and the Grandstream Gateway GXW4224 is the result of extensive work to provide organizations with a secure device, full of features and high scalability capabilities.

The development of the Grandstream Gateway GXW4224 has the mission of facilitating the implementation of a complete VoIP infrastructure taking advantage of each of the Gigabit ports, all this will allow to connect in a simple way diverse locations, as well as all the devices of an office directly in any IP PBX network either local or external resulting in that all are linked to each other.

The Grandstream Gateway GXW4224 integrates multiple analog telephone FXS ports, high quality voice quality, new advanced telephony features, simple provisioning, advanced security protection and many additional features.

Among the general features of the Grandstream Gateway GXW4224 are the following:


  • Built-in 10/100/1000 MBps auto-detection port
  • Supports fax T.38 with which it will be possible to create FaxoverIP
  • Compatible with security-focused TLS/SRTP/HTTPS protocols
  • advanced and privacy protection for each associated account
  • Adds the 3-way audio conferencing feature with which we can make simplified calls and conferencing
  • Integrates Failover SIP server function
  • It has the Zero Config function which seeks to improve and reduce the provisioning of equipment.
  • Supports various ranges of caller ID formats
  • Adds telephony features such as caller ID activation or blocking, call forwarding, call waiting, assisted transfer, call forwarding, pause and do not disturb

The Grandstream Gateway has a number of technical features which are as follows:

  • LED indicators that display LAN link, LAN activity, dial-up connection
  • Window line echo cancellation, dynamic jitter buffer, modem detection & auto connection to G.711
  • 24 telephone RJ11 ports and one 50-pin Telco connector
  • Grandstream Gateway GXW4244 supports voice / fax functions
  • Supports codecs G.711, G.723.1, G.726A / B, iLBC, Fax T.38
  • Automated provisioning with TR-069 or AES encryption
  • Supports XML, TLS / SRTP / HTTPS protocols for advanced security
  • 128×32 backlit graphic display
  • Multi-language support
  • Flexible DTMF transmission methods are available including input audio, RFC2833 and SIP INFO.
  • Up to 4 SIP server profiles per system and independent SIP account per available port
  • Up to 4 SIP server profiles per system and independent SIP account per available port
  • Gateway can be managed via Syslog, HTTPS, Web browser, voice message or TR-069
  • Desktop and rack mount with front brackets

The Grandstream Gateway is a comprehensive solution for new communication trends that require reliable, accessible and scalable hardware.

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Knowing the Dongle Yealink BT40

The technology every day offers us more and more useful tools both to manage our routine tasks, as well as to have advanced means linked to today’s world and always be in connection with it, within the thousands and thousands of options available in the market, Neotel will tell you a little about the Dongle Yealink BT40 and surprise you with everything this device offers to be always connected.

To enter a little context is key to understand that it is a “Dongle”, well, this is a small device through which it will be possible to make safe and high-speed data transfers between two devices as well as sharing the network connection without having to install additional drivers or drivers and in this case Yealink presents its BT40 Dongle which is a Bluetooth USB device which extends Bluetooth connectivity capabilities in the IP phone being compatible with multiple types of Bluetooth headsets, this translates into correct mobility because no matter where we are we can receive calls and thus be active and always present the BT40 Dongle is compatible with the Bluetooth V4 specification.0, compatible with Bluetooth 1.1, 1.2, 2.0 and 3.0.

If we talk about compatibility, the Yealink BT40 is compatible with Yealink SIP-T27G / T29G / T46G / T48G / T41S / T42S / T46S / T48S / T53 which is a large sector of equipment not to lose our communication.

With only grams of weight, these are some of the features we will find in the Yealink BT40:

· Integrates A2DP technology
· Makes use of Bluetooth specification V4.0 + HS
· Compatible with 8K NBS
· Fully compatible with Data Rata (edr) technology enhanced for 2Mbps and 3Mbps
· Offers an operating range of up to 10 meters
· Can be installed on Windows 98SE, Windows 2000, Windows XP, Windows Vista, Windows 8 and Windows 10 operating systems
· Bluetooth frequency range is between 2.402 GHz to 2.480 GHz
· Built-in security
· Has USB 2.0 interface
· Has low power consumption technology to save costs
· You can answer or end active calls directly from your Bluetooth headset
· Allows you to adjust the volume of your Bluetooth headset from both your Bluetooth headset and your phone
· Its overall dimensions are 18 mm * 14 mm * 5.5 mm
· The Yealink BT40 is compatible with broadband audio.
· It offers multipoint technology which allows us to connect up to 4 Bluetooth devices simultaneously.

You can see how Neotel offers you the Yealink BT40 for a fully affordable price and with which it will be possible to fully enjoy Bluetooth technology everywhere.

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How a VoIP System Helps Improve Business Connectivity

Within the constant changes at both technological and human level, it is ideal that we are always at the forefront of the latest options that are developed to help improve organizational competitiveness, as well as allow proper interaction between all users regardless of where they are and there comes into play VoIP systems as the most appropriate solution both in terms of cost, as well as architecture.

The VoIP system took its first steps in the residential and consumer market, but little by little has been occupying an essential place in organizations where today you can find hardware such as Yealink terminals or Grandstream Gateways to help meet all the needs of this valuable technology, but it is ideal to know how VoIP helps organizations to be linked to each other.

When a VoIP system is implemented in the company, it allows to connect employees no matter where they are physically, and in addition to this some VoIP equipment is in the ability to give us access to emails, text messages, voice calls and instant messages with which all elements will be available in one place, if that were not enough, with a VoIP system it will be possible to make calls from any device and any location with which the definition of “portability” becomes a reality.



call recorder

Now an essential question arises and is how to select the best VoIP provider, in addition to some basic infrastructure requirements, for this we give you a series of tips to help you make the best decision, these are:

  • Must offer highly scalable VoIP features
  • Have a good speed broadband network as VoIP calls will travel through it and there the VoIP provider should have evaluation tools.
  • Offer a variety of payment options that can fit the organization’s final budget
  • Must have comprehensive routing and management features for calls and other objects
  • A VoIP system must allow call recording
  • Must be able to integrate with enterprise systems such as CRM and ERP systems
  • You must integrate the click-to-call function with which it will be possible to make web calls.
  • It is essential that free telephone calls are offered and the entire structure allows for low-cost calls.
  • Ease of connectivity and implementation
  • Support 7 X 24

Within all this, both hardware devices (Grandstream Gateway – Yealink Terminals) and general support (Neotel) are one of the best options to implement a VoIP system in the organization regardless of the size of this and enjoy all that VoIP offers.

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Why buy a Yealink RT20 repeater?

If you are looking for the Wi-Fi connection of your home or office to reach the most hidden corners it will be necessary to use small aids so that the natural signal of router or modem expands even beyond its own limits and the appropriate solution for this is the use of a repeater which, as its name indicates, is responsible for receiving the signal from the network device and forwarding it so that the coverage area is much larger and so we are always connected.

Yealink offers you the DEC20 Yealink RT20 repeater which has been designed following the parameters of the Digital Enhanced Cordless Telecommunication (DECT) standard, offering compatibility, easy installation and new visualization features.

The Yealink RT20 repeater can be implemented with the aim of extending the DECT radio coverage that originates from the Yealink base devices (models W52P and / or W56P) to all available directions of range, with this repeater we have an LED screen where we observe the different acoustic and visual differences allowing us to determine the level of intensity of the signal.

The Yealink RT20 repeater has a lightweight design and easy installation with plug-and-play technology ideal for homes and SOHO (Small Office Home Office).

Among its most outstanding features we point out:


  • Compatible with Yealink W52P / W56P IP DECT phone
  • Supports DECT GAP
  • Can be configured with Plug & Play technology
  • Supports star connection with up to 5 devices
  • LED Display

At the technical level the Yealink RT20 repeater offers you the following ideal benefits for a total connection:

  • Compatible with DECT GAP standard
  • Supports automatic call transfer between RT20 devices
  • Plug & Play configuration
  • Supports up to 5 repeaters at each base station
  • Supports up to 2 simultaneous calls per repeater
  • Integrates the auto-association function
  • It has a tactile switch which allows to re-establish the base link.
  • LED display offering an LED for actions such as Power, DECT Link and Active Relay
  • The Yealink RT20 repeater offers an internal range of up to 50 meters and an external range of up to 300 meters.
  • Integrates 2 omnidirectional QWL antennas
  • Has a radio frequency range from 1880 MHz to 1900 MHz
  • Modulation is based on GFSK
  • RX sensitivity of -91dBm
  • Operating conditions are 0 ~ + 45 ° C (+ 32 ~ 113 ° F)

With the Yealink RT20 repeater we are acquiring an advanced device with which we will no longer lose the signal and thus we will always be connected both in our personal life and work since wireless connections are more than vital in the daily life of the human being.

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Features of Yealink T27G terminal

If you are looking for a device that meets the expectations of the end user and each of the customers with great features, Yealink offers you the terminal Yealink T27G which is the update of the T27P where you will find a much more dynamic response in the user interface of the phone, as well as better performance of the device in general terms.

The Yealink T27G terminal was created with several functions focused on providing the user with high level voice capabilities, as well as a better extension capability for business-related functions.

This terminal features Yealink Optima HD technology and integrates Opus’ broadband codec which improves sound quality by increasing the excellence of the voice signal.

The Yealink T27G terminal has been integrated with Bluetooth, Wi-Fi and USB recording functions and is fully compatible with the GigE-based network as well as Gigabit Ethernet and if security is an issue of concern, the Yealink T27G terminal makes use of standard encryption protocols with which remote provisioning is carried out securely.

Among the main features of this terminal we find:


  • It has the HD Voice technology of Yealink Optima which makes a combined use of hardware and software together with broadband technology in order to provide maximum acoustic performance.
  • It has the HD Voice technology of Yealink Optima which makes a combined use of hardware and software together with broadband technology in order to provide maximum acoustic performance.
  • It has Bluetooth, Wi-Fi and USB recording functions and in addition it has three pages of flexible buttons which can be programmed with up to 21 DSS keys.
  • The Yealink T27G terminal makes use of SIP over the Transport Layer Security protocol (TLS/SSL) and is compatible with the 3CX and Broadsoft Broadworks switch providers.
  • Supports PoE
  • Allows integration of up to 6 SIP accounts
  • Supports expansion modules

Now, if you are interested in the Yealink T27G terminal, its technical specifications are as follows:

  • Use the narrow-band codecs AMR-NB (optional), Opus, G.711 (A / μ), G.723.1, G.729G.729AB, G.726, iLBC and in broadband use AMR-WB, Opus, G.722.
  • Features full-duplex hands-free speakerphone with AEC
  • Supports up to 6 VoIP accounts
  • Integrates functions such as one-touch speed dialing, call forwarding, call waiting, call transfer, call hold, auto answer, IP direct call without SIP proxy
  • Synchronization using BT40
  • USB Call Recording
  • Directory with up to 100 entries
  • 3.66″ LCD screen with a resolution of 240×120 pixels
  • Multilanguage interface
  • Two Gigabit Ethernet ports
  • Date and time synchronized with SNTP
  • AES Encryption

The Yealink T27G terminal is a complete and integral solution for communication needs with the best functionalities in the market.

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Why buy the Yealink T29G terminal?

When you are looking for a reliable equipment, powerful and high performance, but whose cost is not high in order to reduce economic issues in the organization, Yealink offers the T29G terminal which is the perfect mix of price / quality.

For just over EUR 100, the Yealink T29G terminal has become the most advanced model in the family of Yealink T2x terminals which has Yealink Optima HD technology which has been developed to establish an ideal communication with improvements focused on the voice to be clear and clean, in addition to that the Yealink T29G terminal has a high-resolution color TFT screen to enhance everything we see on it.

Why acquire the Yealink T29G terminal covers many aspects and not only the above mentioned or also that this terminal supports Gigabit Ethernet ports, as well as a large set of device connections within which we can also link EHS headphones and USB.

We are going to give you some ideas to encourage you to buy the terminal Yealink T29G, these are:



  • It has the HD Audio Yealink Optima technology which is a mixture of software and hardware, which together with broadband technology are used to optimize the maximum acoustic performance.
  • Integrates a new user interface
  • Productivity-oriented features such as XML Browser, SCA, BLF List, call forwarding, call transfer, 3-way conferencing, and many more have been added at the productivity level.
  • Advanced connectivity features as it allows network connectivity, using two Gigabit Ethernet ports, where one of them is used for Power over Ethernet.
  • The Yealink T29G terminal supports up to 6 expansion modules, allowing up to 240 additional buttons to be added to an LCD screen.
  • SIP is used based on the transport layer protocol (TLS / SSL)


To convince you to buy the Yealink T29G terminal, these are some of its technical specifications:


  • Supports codecs G.722, G.711(A/μ), G.723, G.729, G.726 and iLBC
  • Supports up to 16 VoIP accounts
  • Features include call hold, call waiting, call transfer, 3-way conferencing, one-touch speed dialing and more
  • Directory with up to 1000 entries
  • It has 6 navigation keys
  • Possibility to program 10 line keys with up to 27 different functions
  • AES encrypted account
  • Yealink T29G terminal can self-provision with FTP/TFTP/HTTP/HTTPS protocols
  • Date and time synchronized with SNTP
  • Can be used for wall mounting
  • IPv6 Compatible


You can see how the Yealink T29G terminal is a mid-range solution, but with enough professional capabilities for VoIP communication in your organization.

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Advantages of using VoIP telephony

Since the smoke signals man has sought the way to communicate with others and with the advancement of technology, equipment and methods of communication has been redefined to establish a communication between users and in this twenty-first century we can talk about the technology that has set a milestone and is VoIP, many wonder at this point, What is VoIP? Well, VoIP (Voice over Internet Protocol), is a technology that has been developed as a means of communication where all data are sent over the Internet but not in the traditional form of copper or analog wiring, this allows VoIP communication is distributed as packets or fragments of digital data that moves in a LAN (Local Area Network) and WAN (Wide Area Network) optimizing the maximum quality and reliability of communication.

Obviously for everything to work synchronously in delivering the best signal results must meet some criteria both hardware and software such as:


  • To have equipment compatible and suitable for VoIP such as the Grandstream Gateway or the Yealink terminal.
  • Have the necessary codecs to convert the telephone’s analog voice transmission into digital packets so that it can be transferred over the network.
  • Have the PPP protocol (point-to-point protocol) to segment the packets as this will help delay the transmission if it is distributed on low speed lines.

If you want to connect a traditional analogue telephone line to the new technology of the VoIP system, it will be necessary that we have an FXO gateway as it allows to connect the incoming analogue FXS line, as well as the line of the telephone provider directly in the FXO port of the gateway, here comes into play the Grandstream Gateway and Yealink terminal.

Once we implement this we will see some benefits of VoIP technology as:


  • Reduction of costs for each call by using the Internet Protocol for this purpose, this includes both local and international calls.
  • Integration of diverse functionalities since when we use the Yealink terminal or the Grandstream Gateway we are taking with us diverse characteristics (based on the acquired model) that allow to simplify the tasks of management of the calls like calls in wait, mailbox, etc.
  • Offers mobility service because with VoIP we can configure services in various locations without losing quality or availability.
  • Facilitates interaction with the customer because, being based on IP, this technology facilitates that from anywhere in the world we can talk to customers or users.
  • Total availability because if there is a network failure the calls can be redirected to a backup so as not to lose communication.

We see how VoIP has positioned itself, and will continue to do so, as the most complete solution for modern communication.

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Grandstream GXW4248 Features

Grandstream offers a complete series of products focused on maximizing all the functions and scope of VoIP technology for both large and small or medium enterprises and within its broad portfolio we find the Grandstream GXW4248 which is a high-density equipment which seeks to take advantage of every benefit of Gigabit speeds to establish clean and comprehensive communications.

The Grandstream GXW4248 is part of the FXS family which is in the ability to connect multiple sites without failure allowing all local office devices can be connected to an IP PBX network which simplifies installation and configuration processes.

Purchasing a Grandstream Gateway GXW4248 will provide equipment with multiple analog telephony FXS ports (either 16/24/32/ or 48 ports), optimized voice quality, new telephony features, flexible dialing plans, enhanced security protection level enhancements and a host of additional features.

Within the Grandstream Gateway GXW4248 range of features we find:


  • Automated provisioning options are available including TR-069 and XML configuration files
  • It has T.38 fax support which allows you to create FaxoverIP.
  • Integrates advanced security TLS/SRTP/HTTPS protocols
  • Enables 3-way audio conferencing focused on conference calls
  • Adds features such as Caller ID activation or blocking, Call Waiting, Assisted Call Transfer, Call Forwarding, Call Forwarding, Pause and Do Not Disturb
  • Offers 10/100/1000 MBps auto-detection port at network level

It is possible to see how the Grandstream Gateway GXW4248 integrates multiple functions that will be of vital help regardless of the size of the organization.

Now, technically a Grandstream Gateway GXW4248 offers the following:


  • Fax relay based on T.38, ease of creating a group 3 of up to 14.4 kbps and auto switching in G.711
  • Has LAN link, LAN activity, telephone port connection for everything associated with the network
  • Echo Cancellation
  • 128×32 backlit graphic LCD display with support for multiple languages
  • At QoS level DiffServ, TOS, 802.1P/Q VLAN tagging is offered.
  • For signalling, SIP (RFC 3261) is integrated over UDP/TCP/TLS.
  • Viewing or blocking Caller ID and Call Waiting
  • We have 4 SIP server profiles per system and an independent SIP is delivered per available port.
  • For provisioning issues supports TFTP, HTTP, HTTPS, TR069 protocols
  • Offers desktop and rack mount with front brackets
  • To manage the Grandstream Gateway GXW4248 we can use Syslog, HTTPS, a Web browser, voice message or TR-069.
  • Para la gestión de voz se pueden usar los estándares G.711, G.723.1, G.726 (40/32/24/16), G.729 A/B, iLBC.

The Grandstream Gateway GXW4248 is one of the most ideal solutions for any type of company that wants to have a team not only comprehensive but powerful and functional.