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Are your phone bills getting out of control? Are you sick and tired of dealing with a company whose customer service is nonexistent?

If so, you’ve come to the right place. At Numbergroup, we offer cloud-based telephony services to businesses in the UK, providing a full suite of communication solutions, including cloud telephony, numbering, conferencing and contact centre services. We’re committed to providing the highest levels of customer service and support. Our solutions are fully scalable and require no additional equipment or CapEx—just an internet connection.

This means that once you’re connected, there are no ongoing costs for installation or maintenance—you’ll only pay for what you use.

Our cloud-based system is more flexible than traditional ISDN phone systems and will lower your phone bills. You won’t be tied down by expensive long-term contracts or locked into outdated infrastructures; instead, we’ll keep your business up-to-date and ready for whatever comes next in the industry.

Best of all? We strive to ensure that your business has access to reliable service 24/7/365—even if something goes wrong with your infrastructure or your internet connection, we’ll do everything we can to keep your calls flowing smoothly.

VoIP Phones

Grandstream DP720

SKU: DP720

£39

In stock

The Grandstream DP720 cordless IP phone is a DECT cordless VoIP phone supported by Grandstream’s DP750 DECT VoIP base station.

VoIP Phones

Grandstream DP750 DECT VoIP Base Station

SKU: DP750

£40

In stock

The Grandstream DP750 is a powerful Dect VoIP base station that pairs with up to 5 of Grandstream DP720 Dect Handsets to offer mobility to business and residential users.

94 in stock

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The DP750 is a powerful Dect VoIP base station that pairs with up to 5 of Grandstream Dp720 Dect Handsets to offer mobility to business and residential users. When paired with Grandstream DP720, the DP750 offers a powerful Dect VoIP base station that allows any business or residential user to create a Cordless VoIP solution.

It supports a range of 300 metres outdoors and 50 metres indoors, allowing users the freedom to move around their work or home space, delivering efficient flexibility. This Dect VoIP base station supports up to 10 sip accounts and 5 concurrent calls while also offering 3-way voice conferencing, full HD audio and integrated PoE.

A shared sip account on all Handsets will add seamless unified features that gives users the ability to answer all calls regardless of Location in real-time. The DP750 supports a variety of auto-provisioning methods and TLS/strap encryption security.

VoIP Phones

Grandstream GXP1625

SKU: GXP1625

£42

In stock

The Grandstream GXP1625 is an IP Phone that is perfect for small businesses.

60 in stock

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The Grandstream GXP1625 is an IP Phone that is perfect for small businesses. Professionals can enjoy HD audio on both speakerphone and handset and a clear 132 x 48 backlit graphical LCD display. Other great features include 2 SIP accounts and 3 XML programmable context-sensitive soft keys.

VoIP Phones

Grandstream GXP2135

SKU: GXP2135

£60

In stock

The Grandstream GXP2135 is an enterprise-grade IP phone that supports Gigabit speeds and up to 32 virtual BLF/speed-dial keys, making it ideal for busy call centres.

84 in stock

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The Grandstream GXP2135 is an enterprise-grade IP phone that supports Gigabit speeds and up to 32 virtual BLF/speed-dial keys, making it ideal for busy call centres. This Enterprise IP Phone features up to 8 lines/line keys and 4 SIP accounts using a 2.8 inch colour display LCD and full HD audio. The phone supports the fastest possible connection speeds with dual Gigabit network ports, integrated PoE and includes built-in Bluetooth for syncing with mobile devices and Bluetooth headsets. The GXP2135 is the perfect choice for business users looking for a powerful and reliable IP phone with advanced functionality.

VoIP Phones

Grandstream GXP2170

SKU: GXP2170

£86

In stock

Grandstream’s most powerful Enterprise IP phone, the GXP2170 supports up to 12 lines and 6 SIP accounts.

97 in stock

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Grandstream’s most powerful Enterprise IP phone, the GXP2170 supports up to 12 lines and 6 SIP accounts. It’s ideal for users who handle call volumes as it includes 48 on-screen digital BLF/speed-dial keys and supports up to four of Grandstream’s GXP2200EXT Module. The GXP2170 also features built-in Bluetooth, PoE, 5-way conferencing and more.

We have worked on projects for a variety of major companies and government agencies, including:

We serve businesses throughout the United Kingdom