SelectVoice reseller services
SIP trunks are one part of our Wholesale VoIP offering
SIP trunks for UK resellers
Bring SIP trunks, calls and business numbers into one wholesale relationship. Connect compatible customer PBXs and plan number migrations with a clear support and escalation path.
Built around your customer estate
Keep the right customer system
Replace traditional line connectivity without insisting on a new PBX where a compatible on-site system still meets the customer’s needs.
Plan numbers and trunks together
Review number ranges, porting requirements and call routing as one migration, rather than treating numbering as a separate project.
Design for continuity
Agree alternate routing and failover destinations before deployment. Resilience depends on the customer’s connectivity and configuration as well as the core network.
What you can offer
SIP connectivity
Connect compatible IP PBXs to the telephone network and scale capacity around customer requirements.
Explore sip connectivityNumber estates and porting
Review existing geographic and non-geographic numbers, eligibility, porting dates and routing responsibilities.
Explore number estates and portingTeams calling
Consider Microsoft Teams Direct Routing alongside your wider calling and connectivity requirements.
Explore teams callingA broader wholesale service
Add cloud communications, apps and AI when customers need more than trunk connectivity.
Explore a broader wholesale serviceFrom evaluation to customer delivery
01
Inventory numbers and systems
Capture number ranges, existing carrier details, PBX compatibility and peak call requirements.
02
Agree routing and resilience
Define normal call routes, alternate destinations and the connectivity required at each site.
03
Test interoperability
Check inbound and outbound calling and relevant PBX features before porting live numbers.
04
Schedule and verify porting
Agree customer cutover windows, check routing after transfer and confirm the escalation contacts.
A clear support and commercial plan
Review the proposed service mix with one accountable wholesale partner. Confirm compatibility, deployment responsibilities, escalation and commercial terms before customer rollout.
Our 99.99% UK core uptime commitment applies to the core service, not customer internet access, power or equipment. Your continuity design should cover those dependencies.
Estimate your marginIllustrative estimates only. Actual margins depend on product mix and agreed terms.
Where this fits
Deployment examples, not customer case studies.
Existing PBX customers
Move compatible on-site systems from traditional lines to SIP while retaining the installation.
Multi-site estates
Review dispersed numbers and call routes in a coordinated migration plan.
Teams customers
Include external Teams calling in the same voice and numbering discussion.
Partner questions, answered
Your next wholesale relationship
Bring your voice estate together
Review your calls, numbers, SIP, platform and apps with the partner team. Start with your customers’ requirements and agree a practical way forward.