Telephony Services / Carrier Pre-Selection


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Reliable and cost effective phone calls across one of the largest phone networks in the UK, saving you money with no hassle involved in changing from your current provider.

Our telephony services can be combined to include phone line rental and other related services to give you one bill, one provider, and to make your life easier.

Why use a Gamma Partner for carrier pre-selection?

  • Competitive and flexible tariffs to suit how you use the phone. Save up to 24% on your current phone bill.
  • Easy to transfer the service across – no site visits or hassle at your end
  • Excellent Customer service
  • The option to keep your current numbers
  • A reliable service to all national and international destinations
  • Accurate and flexible billing so you can manage your costs


New Inbound Services

New Inbound Platform

Read about Gamma's new Inbound platform, including Contact Pro for contact centre services

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SIP Trunking

SIP Trunking

There is now a much easier, cheaper and more efficient way to connect

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Case Studies

Case Studies

Find out about how our products performed and delivered to our customers

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