BT Global SIP
BT Global SIP: Enterprise SIP trunking with multi-site routing, collaboration integrations, and quote-based pricing. Ranked #15 of 28 in SIP Trunking Providers by our editors (8.0/10); pricing: Pricing on request; best for multi-site enterprises prioritizing resilience.
At a glance
- Editor score8.0 / 10
- PricingPricing on request
- Best forMulti-site enterprises prioritizing resilience
- Emergency callingYes
- Founded1846 · London, United Kingdom
- Facts checked19 Sep 2026
Where it wins
- Centralizes PSTN access across multiple sites
- Supports standby-site call routing for resilience
- Connects with Teams, Zoom, and Cisco Webex
Where it doesn't
- Pricing is quote-based rather than publicly listed
- Configurable channel capacity may require sales planning
- Focused on enterprise voice infrastructure, not general communications
Our verdict on BT Global SIP
BT Global SIP is an enterprise SIP trunking service for organizations that need IP-based access to public telephone networks. It supports inbound and outbound PSTN calling, number porting, new number allocation, emergency-service calling, and centralized PSTN access across sites. Its positioning suits multinational and multi-site organizations managing business voice infrastructure across locations, particularly those that need configurable capacity and standby-site routing.
Pricing is contact-sales and may combine per-channel and usage charges, so buyers should plan for a tailored commercial discussion rather than a published entry plan. The service is available through web and API access, with a 24/7 self-service ordering and service management portal. Platform fit is a notable strength: BT Global SIP integrates with Microsoft Teams, Zoom, and Cisco Webex, allowing organizations to connect SIP-based calling with established collaboration environments.
Resilience and control are central to the offer. Buyers can configure SIP channels and trunk capacity, route calls to a standby site, and optionally encrypt SIP signaling and voice. Number porting, emergency calling, and centralized access address core requirements for enterprise telephony deployments. Organizations seeking a multi-site SIP service with collaboration-platform integrations and operational self-service should consider BT Global SIP. It is less suited to buyers looking for transparent package pricing, a narrowly scoped small-business phone service, or a solution without enterprise voice infrastructure requirements.
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BT Global SIP pricing
BT Global SIP fact sheet
| Free plan | Not verified |
|---|---|
| Paid from | Not verified |
| Pricing model | Hybrid |
| Concurrent channels | Not verified |
| Number porting | Yes |
| Emergency calling | Yes |
| Toll-free numbers | Not verified |
| Encrypted signaling | Yes |
| Deployment | Cloud |
| Platforms | Web |
| Integrations | 3 integrations: Microsoft Teams, Zoom, Cisco Webex |
| Pricing | Pricing on request |
| Website | international.bt.com |
| Facts checked | 19 Sep 2026 |
BT Global SIP integrations
BT Global SIP lists 3 integrations on its own site.
- Microsoft Teams
- Zoom
- Cisco Webex
Alternatives to BT Global SIP
- IPComms SIP TrunkingA low-cost SIP trunk with encryption, E911, failover, and broad PBX integrations.9.4
- Telnyx SIP TrunkingLow-usage SIP trunking with API setup, calling features, and pay-as-you-go pricing.9.3
- BulkVS SIP TrunkingA low-cost SIP option for North American numbers, PBXs, and carrier workflows.9.2
See all BT Global SIP alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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