BT Global SIP
BT Global SIP provides VoIP connectivity between an on-premises phone system and the public switched telephone network.
What BT Global SIP is
BT Global SIP provides VoIP connectivity between an on-premises phone system and the public switched telephone network. Depending on the country, it can replace PSTN/ISDN service entirely or provide outbound voice without a full replacement. Calling capabilities include inbound PSTN traffic, outbound local, regional, and national calls, emergency calls, number porting, and DDI reservation and allocation. BT describes integration with Microsoft Teams, Zoom Meetings, and Cisco Webex. Availability varies by service: BT states that Global SIP Outbound is available in 73 countries, while full PSTN replacement is available in 24. A cloud self-service portal provides 24/7 access to order, provision, and manage the service, with changes taking effect in real time; BT says the portal has no charge. BT describes end-to-end security, fraud prevention, and monitoring across its voice solutions. Its service schedule says Global SIP is not PCI DSS compliant and should not carry payment card traffic. Pricing is on request, with charges specified in the customer order. BT was founded in 1846 and is headquartered in London, United Kingdom.
Good
- Supports inbound and outbound calling.
- Includes emergency calls and number porting.
- Integrates with Microsoft Teams, Zoom Meetings, and Cisco Webex.
- Portal access is available 24/7.
- Portal has no charge.
Watch out
- Not PCI DSS compliant.
- Should not carry payment card traffic.
- Full PSTN replacement is available in 24 countries.
- Pricing is on request.
Who it suits
BT Global SIP is intended for global organisations seeking to consolidate voice and data networks and connect collaboration platforms. It may suit organisations that need country-dependent PSTN replacement or outbound calling options.
Verdict
BT Global SIP connects on-premises telephony with the public switched telephone network and provides a self-service management portal. Availability and replacement options vary by country, and the service must not be used for payment card traffic.
Plans and prices
From BT Global SIP's own pricing page, checked 7 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| BT Global SIP | Priced on request | Flexible pricing structures; charges specified in the customer order |
The facts
Each one read from BT Global SIP's own pages, with the date it was checked.
What it does
- Calling features
- The product supports inbound PSTN traffic, outbound local, regional and national calls, emergency calls, number porting, and DDI reservation and allocation.checked 7 Oct 2026
- Compliance limitation
- BT's service schedule states that Global SIP is not PCI DSS compliant and should not be used for payment card traffic.checked 7 Oct 2026
- Coverage
- BT states that Global SIP Outbound is available in 73 countries and full PSTN replacement is available in 24 countries.checked 7 Oct 2026
- Integrations
- BT describes integration with Microsoft Teams, Zoom Meetings and Cisco Webex.checked 7 Oct 2026
- Intended customers
- BT describes Global SIP as a service for global organisations seeking to consolidate voice and data networks and connect collaboration platforms.checked 7 Oct 2026
- Management portal
- The cloud-based self-service portal provides 24/7 access to order, provision and manage Global SIP, with changes taking effect in real time.checked 7 Oct 2026
- Portal charge
- BT states that the Global Voice self-service portal has no charge.checked 7 Oct 2026
- Purpose
- Global SIP provides VoIP connectivity between an on-premises phone system and the public switched telephone network.checked 7 Oct 2026
- Security
- BT describes end-to-end security, fraud prevention and monitoring across its voice solutions.checked 7 Oct 2026
- Service options
- Depending on the country, the service is available as full PSTN/ISDN replacement or as outbound voice service without full replacement.checked 7 Oct 2026
- Support and sales
- BT invites prospective customers to contact a specialist for information about the service and its pricing.checked 7 Oct 2026
The company
- Founded
- 1846checked 28 Sep 2026
- Headquarters
- London, United Kingdomchecked 28 Sep 2026
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