Business IP Phone Systems (IP PBX)

All of the premise-based VoIP UC Systems easy to manage, feature-rich and offer uncompromised functionality, flexibility, cost savings as well as advanced features that substantially improve productivity. Choose from a wide variety of VoIP UC PBX Systems from the VoIP Industry’s leading providers – and don’t forget to ask about our financing offerings.

Yeastar S Series IP PBX


Easy to use, reliable, and feature-rich, S-Series is designed to help small and medium businesses make a giant leap in efficiency and cost savings. The innovative S-Series unleashes the power of unified communications, provides great flexibility with field-upgradable modular design, and allows you to connect to traditional lines, VoIP lines, and cellular networks. Perfectly future-proof, S-Series converges business-enhancing features with free software updates to grow with your business and assures reliability over the years.

UCM6200 series VoIP PBX


Designed to provide a centralized solution for the communication needs of businesses, the UCM6200 series IP PBX appliance combines enterprise-grade voice, video, data, and mobility features in an easy-to-manage solution. This IP PBX series allows businesses to unify multiple communication technologies, such as voice, video calling, video conferencing, video surveillance, data tools, mobility options and facility access management onto one common network that can be managed and/or accessed remotely. The secure and reliable UCM6200 series delivers enterprise-grade features without any licensing fees, costs-per-feature or recurring fees.

Epygi Unified Communications

The QX20 IP PBX is designed for offices with as many as 32 users. The QX20 can support up to 32 IP devices and 10 concurrent calls. SIP trunking allows for the QX20 to connect directly to an ITSP with no additional equipment. The QX20 includes a firewall and SIP Intrusion Detection for optimal security. E1, T1, FXO and FXS ports can easily be provided using the Epygi QX Gateways.

Yeastar P Series



P-Series PBX System features 3 different capacity options with the full feature set, which are supported by the upgraded and more refined hardware appliances. In addition, we also redesign the management portal interface to bring a fresh modern look with responsive design, live graphs, navigation search bar, etc.

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Work from anywhere

Diallog cloud PBX offers scalable phone solutions for business

The iServ UC convergent platform delivers advanced PBX and Unified Communications features to businesses of any size, transparently, over any network and on any terminal. This is what makes the IServ UC offering so powerful.


Whether you work from home, on the road, at your desk, or from the boardroom, iServ UC has your collaboration requirements covered.


Easily expandable to every market tier from SMB to enterprise with easy to deploy packages based on the modern workforce requirements.

Globally Trusted

Powered by Centile, a globally tried and trusted platform, our solution offers you the same internationally recognised high standards and efficient user driven experience..

Locally Hosted

iServ UC is a locally hosted solution with readily available support teams able to assist with any and all technical related queries and maintenance requirements.

Maximize Affordability

iServ UC is very competitively priced while still offering all the advanced business grade features of competing platforms at a much more affordable price.

API Integration

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Full UC & C

A truly unified communications platform integrating all elements of your business communication needs, from mobility and VC to voicemail and auto attendant, we’ve got it all.

Allows Users to control and manage their own calls.

Allows multiple parties or devices to enter a conference call.

Realtime message and file sharing with individuals, groups and teams.

Work from any device with your everyday office user ID.

Enjoy all the iServ UC features from your mobile device including presence management, full VC, mobility and screen sharing. Available from

Full open API integration into your work CRM and ERP systems allowing uninterrupted collaboration.

Screen sharing, white board and dynamic group virtual meetings allowing any office workers to meet colleagues anytime, anywhere.

Supports the simultaneous use of multiple certified IP devices.

for use with Cisco MPP Phones, Yealink, Grandstream HTEK and SNOM IP Phones.

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Yealink W60P
Yealink W60P

Yealink W60P


Yealink W60P Cordless IP Phones

The Yealink DECT IP Phone W60P enhances communication  productivity for on-the-move employees in industries such as warehousing, catering and retail as well as in factory settings. Small yet powerful, the DECT base W60B has upgraded hardware for powerful features, reliability and scalability. The W60P is a bundle of W60B base and W56H handset, which delivers top-tier audio clarity and battery durability. The W60P is an ideal DECT phone solution for on-the-go communication.

Stronger Hardware, Greater Scalabilities

The Yealink W60B DECT base combines usability and scalability and features an upgraded chip for enhanced capabilities such as support for up to eight handsets, eight SIP accounts and eight concurrent voice calls. This powerful device allows for greater scalability for your voice collaboration.

Compact and Aesthetically Pleasing

The W60B DECT base fits nicely in any office, whether it’s standing on a desk or mounted on the wall. With a recessed power cord slot, the W60B is small and sleek like a finely crafted work of art and naturally integrates into your office environment without adding clutter.

Advanced Codecs and Excellent Reliability

Upgraded hardware for the W60B translates into greater capability and improved stability.The W60B supports advanced codecs such as Opus and the AMR Codec. The Yealink W60P protects your investment returns, meeting current and future requirements. . The W60P hardware is capable enough to enable a dual system. If software becomes corrupted during a failed upgrade (when power is cut inadvertently, for example), the W60B can automatically restart the upgrade when power is restored. Dual system, higher reliability.

Powerful Battery Solution Makes Communication Worry-Free

With an advanced Li-ion battery, the W60P boasts 30 hours of talk time and 16 days (400 hours) of standby time. This DECT phone gives businesses a worry-free solution thanks to its quick-charge technology and robust battery.

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Reduce Cost – Work From Home

Reduce Cost

Reduce your telephone account by up to 50% with our Voice over Internet solutions. Calls to all cellular networks at only 80 cents per minute. (Per second billing)

Flexible solution

We grow with your business – the system is designed for 3 to 10000+ extensions. Integrate system to create your own digital receptionist and enjoy many more functions that will save your time and resources.

Innovative and reliable technology

Hassle-free, reliable and simple to operate. Detailed reports, real-time monitoring, call tracking, and trend data are just a few of the tricks up the sleeve of our TMS.

Become fully mobile

1 extension on 4 different devices. As long as you have internet access, you’ll always be able to stay in touch – allowing you to do better business, anywhere, anytime.

VoIP = freedom

Small and medium-sized enterprises (SMEs) no longer have to rely on a fixed landline as VoIP plans offer business customers value for money. Diallog’s business sales team will assess your business’s unique needs and requirements to come up with the best VoIP solution for you

Mobile app Linkus
Cloud PBX

Contact us for more information

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Product news
Yealink Tops the SIP phone

Product news

Yealink Tops the SIP phone Market Share for a Third Consecutive Year

Xiamen, China – August 18, 2020 – Yealink, a global leading unified communications (UC) solution provider, has topped the list for the SIP phone segment for a third consecutive year with a market share of 29.5% in 2019, according to latest Global Enterprise Communications Platforms and Endpoints Market report by Frost & Sullivan. 

“Yealink has maintained its global dominance in terms of total enterprise SIP desktop phone shipments. The company has accomplished this leadership position through growth strategy excellence, price/performance value, technology leverage, brand strength and deliver a superior customer service experience. “as highly appreciated by Michael DeSalles, Frost& Sullivan.

Yealink has led the SIP phone circuit for three years, and continuously increased its market share. What behind these achievements is its continuous focus on enterprise communication and core competitiveness enhancement. With high-quality products and leading ecological layout, Yealink’s worldwide service also received the highest customer satisfaction.

Leading Products

In product matrix, Yealink introduces the industry leading level phone–T5 series, targeting high-end market; still there are T4 series for various demand and scenes of enterprises, as well as entry-level T3 and T2 series business phone. The phones with different positioning meet the special needs of different industries and scenes in a flexible but deep way, providing a broad market space for the continuous development of Yealink SIP mobile phones.
Moreover, Yealink and Microsoft have launched a strategic cooperative relationship in the field of audio and video communication deeply, working together for efficient, convenient and intelligent enterprise communication and collaboration solutions, which provides excellent opportunity for Yealink SIP phones to move toward the high-end market.

Leading Technologies

Decades of research and development, Yealink continuously to promote product functions innovation with leading technology:
The “Acoustic Shield” technology pioneered by Yealink brings distraction-free voice clarity to open workspaces by using multiple microphones to create a virtual sound-wall to remove background noise; The innovative video feature well elevates the efficiency of daily communication; The built-in Bluetooth and WIFI bring super flexibility and expandability; The Device Management Platform offers a solution for deploying UC endpoint devices with high-efficiency and low cost.


Looking forward, Yealink will continue to optimize solutions for connectivity and hassle-free collaboration with its technological innovations, providing users with more reliable AI-powered solutions to deliver a user-friendly experience and help its customers achieve more.

Yealink Contributes to Zoom Hardware as a Service

Xiamen, China – July 16, 2020 – Yealink, a global leading provider of enterprise communication and collaboration solutions, recently announced a collaboration with Zoom Video Communication, Inc.’s Hardware as a Service program (HaaS) as a hardware manufacturer with its prime business phone T53W, T54W, T58A and Optima HD IP Conference Phone CP960.
The Zoom-certified Yealink phone is compatible with Zoom’s software and supports comprehensive functions, ensuring premium and efficient communication with various models for different scenes and demands. Moreover, Yealink provides reliable service with 24/7 technical support and management platform YMCS, supporting daily use and regular maintenance. 

With powerful terminals and system, the one-stop solution well elevates the daily communication of enterprises with low cost, flexible deployment, streamline purchasing and reliable service, making business-grade communication more affordable, convenient and professional.
•    Low upfront costs and predictable budgets: Deploy your Zoom solution with Yealink hardware without the large initial investment, saving budget for other IT projects
•    Streamlined purchasing: Include your Zoom software and Yealink devices on a single invoice for simple end-to-end procurement
•    Scalability: Add hardware as your business evolves with high-end Yealink Phones and Conference Phone that provide a turnkey experience.
•    All-round service: Customers can enjoy convenient and reliable support for both Zoom Phone and Yealink hardware from Zoom. 

“We are excited about this collaboration and are committed to providing business-grade communication terminals that are easy to use and highly compatible.” said Lee, Product Marketing Director of Yealink. “Together with our partners, we will bring a seamless and consistent audio communication experience to enterprises.”

“Hardware as a Service is a game-changer that addresses key IT challenges of heavy upfront hardware costs, complex deployments, high-touch support, and cumbersome device lifecycle management,” says Karen Hong, Zoom Phone Sr. Product Manager, Zoom. “And that’s why we trust the products of Yealink. Easy deployment and practical features perfectly match the expectation of our clients.”

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Cisco Phones

Cisco Phones


Cisco MPP IP Phones

Cisco IP Phone 8851

The Cisco® IP Phone 8800 Series with Multiplatform Phone Firmware is a high-fidelity voice and video communications portfolio designed to improve your organization’s person-to-person communications while reducing your operating costs on Cisco Webex Calling, Webex Calling Carrier, Cisco Broadworks and approved Unified-Communications-as-a-Service (UCaaS) platforms.

Product overview

For partners who provide voice and video services to end customers on open SIP UCaaS platforms, Cisco offers specific firmware loads that support these platforms and run on the Cisco® IP Phone 8800 Series. The feature set and user experience provided by this firmware is not identical to what is provided by the firmware designed and built for use with Cisco on premises call control systems, such as Cisco Unified Communications Manager, but there are many similarities. For clarity, this data sheet focuses only on the features provided on these multiplatform phone firmware loads. For a list of hardware-enabled functions, see the datasheets for the phones listed under the Cisco IP Phone 8800 Series product information.


Cisco expansion module

Cisco IP Key Expansion Model for 8800 Series

Provides additional keys for speed dial, directory numbers, or programmable features

LCD colour display

8 physical keys, 2 pages: 36 total keys

Connect up to three KEMS to the 8861 and 8865, and up to two KEMS to the 8851

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Why the Softphone is Vital for Teleworking

Why the Softphone is Vital for Teleworking

stay connected work from home anywhere
stay connected work from home anywhere

During the past few weeks, companies of all sizes are taking temporary measures to transition their workforce to work-from-home in response to the uncertainty presented by COVID-19. The ongoing pandemic is accelerating the pace at which many organizations are adopting remote working technologies.

The major challenge for many businesses, especially smaller ones with limited resources, is how to properly equip their remote workers with the right tools. No business can afford to lose contact with customers, so to keep business as usual, communication is key. In terms of the communications device, the IP phone does a great job in the office but it is not that portable in many cases. Though some companies encourage employees to take their work phones home, it may not be practical for everyone and every business.

In fact, when working from home, many employees operate on their own devices, no matter it is a desktop or mobile phone. That’s when a softphone comes in handy.

Benefit #1 Making your office extension mobile

A VoIP softphone is an app on your smartphone or computer that sends voice calls through the Internet. No need for physical phone lines, with the softphone, remote workers can take their own devices as the office extensions to make and receive business calls and keep their personal cell phone numbers private, as long as they have internet connections. A softphone solution ensures that every member of the team is notified and accessible with messages synced with their personal devices.

Benefit #2 A wide range of call handling features at hand

Besides basic communications features, as the demand for softphones continues to grow, many vendors have added a variety of advanced features to give users greater control over business communication through softphones. Having a softphone running in your mobile phone or desktop is just like having your corporate phone system with you anywhere. Even working from home, you can easily transfer, hold, mute, and record calls, set up call forwarding rules and ring strategy settings, check missed calls, call history, voicemails, and recordings, just like with a desk phone.

Benefit #3 Consolidated collaboration and increased engagement

Some communications solution providers offer the softphone with unified communications capabilities. Employees can chat with each other and create group chats to discuss daily tasks and minimize email overload, as well as share files with colleagues using simple drag and drop. Besides, CRM integration supported by some softphones takes the work-from-home experience to the next level by contributing to real-time data collection, personalized customer service, increased work efficiency, and easier team management.

Benefit #4 Conferencing: particularly beneficial feature for remote workers

Conferencing is indispensable when an issue requires collective discussion, making it extremely important for the remote workforce. By definition, an ad hoc conference takes place immediately without scheduling so you can keep all processes fast and spontaneous with dispersed team members working from anywhere. To start or join a conference call is quick and easy with your softphone without dialling in, and you can reach anyone within or out of your organization.

Establishing Linkus Softphone for remote working is a no-brainer

Coordinating with both the premise-based S-Series VoIP PBX and Cloud PBX, Linkus Softphone is a great help to facilitate remote working and enable boundary-less business communication experience. Besides support teleworking, Linkus Softphone and desk phones can supplement each other to deliver an exceptional communications experience for both in-office and on-the-go employees.

If your phone system is too old to support teleworking and you need to act fast, this solution is for you. We now offer our Cloud PBX free for 90 days in light of the pandemic. You can simply sign up to get now and use it with Linkus Softphone. Besides a temporary measure, it is also a good chance to evaluate your options in the real world and plan for the upgrade when back to the office.

Before using Linkus, you need to configure Linkus Server via the PBX web interface. Click here to watch the Quick Start Guide.

Here is a quick walk-through of Linkus Softphone.

Login: Linkus Softphone is free to download and use. (download now) After receiving the welcome email from your administrator, you can either copy the provided link or just scan the QR code in the email to quickly login in.

  • Contacts & Presence: Extensions information and external contacts saved on the PBX, as well as local contacts on your mobile phone are all synchronized on Linkus. The presence status indicates the availability of each extension user.
  • Audio Calls: Linkus comes with a list of features to help better manage calls. For instance, you can select and dial with the hotkey, make a blind/attended transfer, handle call waiting, answer calls via Bluetooth headset, etc.
  • Conference: Linkus Mobile Client supports ad hoc conference where you can invite any members. Linkus will immediately make calls to the invited members who can enter the conference by simply picking up the call. Up to 9 participants are supported on an ad hoc conference call.
  • Click to Call: Linkus Desktop Client comes with a Click to Call Chrome extension which automatically detects phone numbers on web pages and allows you to place calls with a simple click, saving you time from manually dialing and eliminating dialing errors.
  • Chat & File Sharing: When on a call, you can still exchange information with colleagues through chat or group chat and share files quickly, without 3rd party application.
  • CRM Integration: After integrated with the CRM systems, when a CRM contact calls you, Linkus will pop up the call with contact details, and the call logs will be recorded in the CRM system. When receiving a call from an unknown number, a new contact will also be created automatically.
  • Call history, voicemail & recording: The voicemail messages and recorded calls are synchronized on Linkus Softphone and Yeastar PBX System. You can listen to, download, delete the messages, and instantly call back directly via Linkus.
    Linkus Cloud Service (LCS): it is designed to minimize Linkus-related server and network configurations and create a remote working environment for S-Series VoIP PBX users. 
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Cloud PBX Solution Soft Phone

Cloud PBX Solution Soft Phone


Why Cloud PBX

To keep business communication as usual during the ongoing pandemic, some companies encourage employees to take their desk phone home, but it may not be practical for everyone and every organization. That’s when a softphone comes in handy.

Benefit #1 Making your office extension mobile
No need for physical phone lines, with a softphone, you can take your mobile phone or desktop as office extensions to make and receive business calls.

Benefit #2 A wide range of call handling features at hand
Even working from home, you can easily transfer, hold, mute, record calls, check missed calls, voicemails, and recordings, just like with a desk phone.

Benefit #3 Conferencing: particularly beneficial for remote workers
An ad hoc conference takes place immediately without scheduling so you can keep all processes fast and spontaneous with dispersed team members.

Benefit #4 Consolidated collaboration and increased engagement
Some communications solution providers offer the softphone with unified communications capabilities, such as chat, file sharing, CRM integration, etc.

Coordinating with both the premise-based S-Series VoIP PBX and Cloud PBX, Linkus Softphone is is free to download and use, facilitating remote working and enable boundary-less business communication experience. Click the button below to have a quick walk-through of Linkus.

Linkus - Laptop

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Grandstream GRP2612

Grandstrem GRP2600 series IP Phones
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Grandstream GRP2612
Grandstream GRP2612

Grandstream GRP2612 IP Phone

2-line Carrier-Grade IP Phone

The GRP2612 is a powerful 2-line carrier-grade IP phone designed with zero-touch provisioning for mass deployment and easy management. It features a sleek design and a suite of next-generation features including WiFi support (GRP2612W), 16 virtual multi-purpose keys (VPKs), a colour LCD with swappable faceplates for easy logo customization and more. The GRP series includes carrier-grade security features to provide enterprise-level security, including secure boot, dual firmware images and encrypted data storage. For cloud provisioning and centralized management, the GRP2612 is supported by Grandstream’s Device Management System (GDMS), which provides a centralized interface to configure, provision, manage and monitor deployments of Grandstream endpoints. Built for the needs of desktop workers and designed for easy deployment by enterprises, service providers and other high-volume markets, the GRP2612 offers an easy-to-use and easy-to-deploy voice endpoint.


Grandstream GRP22612:

Supports 2 SIP accounts and 4 multi-purpose line keys
GRP2612W includes built-in dual-band Wi-Fi support
Swappable face-plate to allow for easy logo customization
HD audio supporting all major codecs, including wide-band codecs G.722 and Opus
Up to 16 digital BLF Keys
Enterprise-level protection including secure boot, dual firmware images, and encrypted data storage

Telephony Features

Hold, transfer, forward, 3-way conference, call park, call pickup, shared-call-appearance(SCA)/bridged-line-appearance(BLA), downloadable phonebook(XML, LDAP, up to 2000 items), call waiting, call log(up to 1000 records), XML customization of screen, off-hook auto dial, auto answer, click-to-dial, flexible dial plan, hot-desking, personalized music ringtones and music on hold, server  redundancy and fail-over 

Grandstream GRP 6212
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Yealink W53P Cordless Phone
Yealink W53P

Yealink W53P Cordless Phone

Yealink W53P

YEALINK W53P Cordless VoIP Phone

Bring Scalability to Cordless Communications

Making phone calls while on the move is a vital part of work in various business segments such as warehouses, retails, restaurants, factory sites, SOHOs and SMEs. The Yealink DECT IP Phone Solution is specifically designed to power up your on-the-go business with its sophisticated HD voice, robust battery and 50-meter indoor/300-meter outdoor coverage. 
Yealink’s comprehensive and sophisticated wireless DECT system comprises multiple phone models: the entry-to-mid level W52P and W53P pack essential features and the premium-level W60P features an advanced design while the W41P is geared towards personal desktops and the CP930W hosts audio conferencing. Customers can easily choose the phone that meets their requirements and supports their wireless office.


The Yealink W53P Wireless DECT Phone is a reliable and cost-effective choice for customers who are looking for a mid-level DECT IP phone for their moderate-to-active on-the-move communications.

Key Benefits:

  • Wireless CAT-iq2.0 DECT technology offers premium and stable HD audio quality;
  • 1.8-inch 128 x 160 TFT color screen for quick and easy information navigation;
  • Up to 18 hours of talk time and 200 hours of standby time, dependable for moderate call traffic;
  • Upgraded compact and metallic silver design makes it comfortable to carry and handle;
  • Optional Protective Case featuring water and dust-proof, and drop resistance.
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