When X2 Communications was selecting a primary SIP carrier for our partner network, the decision came down to a straightforward question: which carrier gives UK resellers the most defensible proposition to take to a client? After evaluating multiple options, we chose Telnyx — and this article explains what drove that decision and what it means in practice when you work with us.
The Architecture Difference
Most UK SIP carriers route voice traffic over the public internet. That works adequately under normal conditions, but the public internet introduces variability — jitter, latency spikes, and packet loss that are difficult to predict and impossible to fully control. Telnyx built a different approach: a private global IP backbone, with voice traffic staying on Telnyx infrastructure from origin to destination and never touching the public internet in transit.
The practical result is more consistent call quality, particularly for environments with high call volumes, international traffic, or sensitivity to audio quality — contact centres, professional services firms, healthcare practices. It also means that when network issues occur, Telnyx engineers are diagnosing their own infrastructure rather than chasing faults across third-party carriers.
What Telnyx Offers Beyond Standard SIP Trunking
The commercial case for Telnyx goes beyond call quality. The platform supports capabilities that are increasingly relevant to the SME market and give X2 partners a more differentiated proposition:
- Per-second billing: Clients pay only for actual call duration — no rounding to the nearest minute. A meaningful cost advantage for businesses with high volumes of short calls.
- Virtual numbers in 140+ countries: Viable for clients with international offices or multi-territory operations who want local presence without local infrastructure.
- AI voice integration: Telnyx’s platform supports intelligent call handling agents that can qualify inbound calls, take messages, and automate routine call flows — a capability that is moving from enterprise-only to SME mainstream.
How This Works When You Sell Through X2
In practice, X2 manages the entire Telnyx relationship on your behalf. When you bring us a new client deployment — whether Yeastar Cloud PBX or a hardware P-Series system — we provision the SIP trunks, configure codec settings and failover routing, and test call quality before any client-facing cutover. You don’t interact with the Telnyx platform directly. You present the service under your brand; we handle the infrastructure.
For clients with specific requirements where Telnyx isn’t the optimal fit — particularly those with large UK number estates where porting track record is the priority — we also offer trunking through Voiceflex, one of the UK’s established Tier-1 wholesale carriers. We’ll recommend the right carrier based on the client’s usage profile and requirements. To discuss partner rates and get started, contact the X2 team.