Global SIP Trunks · 137+ countries

Global SIP Trunks — Real Local DIDs in 137+ Countries

One SIP trunk to real local DIDs in 137+ countries, from MIIT-regulated China through ACMA-regulated Australia. Standard SIP/TLS authentication, every codec your endpoints negotiate, every PBX and AI voice platform integrates. Live in days, not months.

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137+ countries, one trunk TLS + SRTP end-to-end Every standard PBX + AI voice integration

1. What a SIP trunk is

A SIP trunk is the IP delivery pipe between a carrier and your PBX, AI voice agent, or call-control platform. Signaling over SIP, audio over RTP, replacing the legacy TDM hand-off. One authentication relationship, any number of DIDs over the same trunk.

DIDHub's SIP trunks carry numbers from 137+ countries over one authenticated relationship. The trunk itself is standard SIP; what varies country-to-country is the regulatory layer underneath (which entity holds the number, what KYC is required, what use cases are approved). DIDHub coordinates the regulatory side so you see a single SIP trunk regardless of how many countries' DIDs ride it.

For the conceptual deep-dive, see our DID Number Provider guide. For the broader compliance picture, see international DID compliance & KYC bundles.

2. Why DIDHub for SIP trunks

137+ countries, one trunk

One authentication, real local DIDs anywhere DIDHub has inventory. Mix US toll-free, German Vorwahls, Japanese 050, Chinese 010 on the same trunk. Routing rules per DID.

Regulatory coverage

MIIT (China), BNetzA (Germany), MIC (Japan), Ofcom (UK), FCC (US), ACMA (Australia), and dozens more. DIDHub handles the per-country paperwork and the licensed local-entity relationships.

Every standard integration

Microsoft Teams Direct Routing (managed SBC), Asterisk, FreePBX, 3CX, FusionPBX, Kamailio, OpenSIPS, every AI voice platform (Vapi, Retell, ElevenLabs, Bland, Synthflow, LiveKit).

Self-serve, no contracts

Sign up, activate after KYC, scale channels as you grow. No annual commits, no minimum spend, no separate "trunk setup" fee. Pay for what you use.

3. SIP trunks by country

Click a country for country-specific regulatory details (KYC, activation timeline, POPs), number types available, pricing, and PBX integration notes:

Don't see a country you need? We have termination relationships in additional markets; contact sales for the full inventory.

Start your SIP trunk today

Real local DIDs from 137+ countries on one trunk. No setup fee after KYC, no contract, cancel anytime.

4. Integration patterns

Every modern PBX, UC platform, and AI voice stack authenticates against the trunk:

Microsoft Teams Direct Routing

Managed SBC-as-a-Service in 5 PowerShell commands. The standard alternative to Microsoft Calling Plans for international coverage.

See Teams DR →

Asterisk / FreePBX

Standard pjsip trunk config. FreePBX trunk module maps to DIDHub's IP-ACL or registration modes.

Asterisk → · FreePBX →

3CX

Generic SIP trunk template with TLS:5061. Outbound caller ID per extension; per-DID inbound routing rules.

3CX guide →

AI voice agents

BYOC SIP trunk for Vapi, Retell, ElevenLabs, Bland, Synthflow, LiveKit, Pipecat, Vocode. Bind specific DIDs to specific agents.

AI voice integrations →

Kamailio / OpenSIPS

SRV-based POP failover, dispatcher-module load balancing, per-trunk DNID auto-correct.

Kamailio →

Softphones

Per-extension digest registration for Zoiper, Bria, Linphone; useful for distributed support teams.

Softphones →

5. Pricing structure

Four line items, the same everywhere DIDHub operates:

Per-DID monthly rental, varies by country and number type (from $2/mo for low-regulation markets, up to $60+/mo for highly-regulated toll-free in strict markets).
Per-minute inbound usage on most countries (rate varies by region).
Channel capacity, 5 channels included free, 25 channels $95/mo, 50 channels $180/mo, 100 channels $330/mo, 200 channels $580/mo.
Per-minute outbound, varies by destination (see global rate sheet).

Setup is $0 once KYC paperwork is approved (where KYC is required). No contracts, no minimum spend, no annual commitments. See per-country pages for exact pricing.

6. Setup in 6 steps

Sign up & pick countries

Create a DIDHub account, supply your business details, and select which countries you want DIDs from. Mixed-country trunks are fine; one authentication relationship.

KYC + regulatory submission (where required)

For regulated countries (China, Germany, India, etc.), DIDHub coordinates with the national regulator and our in-region carrier partner. Unregulated countries (US, UK, NL) activate instantly.

Allocate DIDs & channel capacity

You pick the number types per country and the channel capacity. Channels are independent of DID count; you can carry 200 numbers on a 10-channel trunk if your concurrent-call peak is 10.

Receive trunk credentials

SIP URI (sip.didhub.io, terminating to your nearest POP), digest username/password or IP-ACL details, TLS cert verification fingerprint, and your assigned DIDs.

Wire up your PBX or platform

Standard SIP trunk config on Asterisk, FreePBX, 3CX, Kamailio, OpenSIPS. For Teams Direct Routing, Vapi, Retell, or any BYOC platform, paste credentials into their BYOC config.

Test inbound + outbound

Test calls in both directions. Confirm caller-ID, codec negotiation, audio quality. Add more countries to the same trunk anytime.

7. FAQ

Can one SIP trunk carry DIDs from multiple countries?

Yes; that's the standard DIDHub setup. One trunk authenticates against DIDHub once and carries any number of DIDs from any of the 137+ countries we cover. Routing rules (which DID rings what destination) live on your PBX, not in our trunk config.

Which POP should I terminate to?

Use sip.didhub.io with DNS SRV records that resolve to the nearest in-region POP automatically. For latency-sensitive deployments, you can pin a specific POP. See per-country pages for the recommended primary POP per country.

What codecs are supported?

G.711 a-law (PCMA, European/Asian default), G.711 μ-law (PCMU, North American default), G.722 (HD voice), Opus (for AI voice agents and IP-native softphones). G.729 available on request.

Is STIR/SHAKEN supported?

For US and Canada outbound, yes; DIDHub-allocated NANP numbers are signed with A-attestation by default. STIR/SHAKEN is a US/Canada framework and doesn't apply to other regions.

Can I use a DIDHub SIP trunk with Microsoft Teams?

Yes, via Microsoft Teams Direct Routing through DIDHub's managed SBC. See Teams Direct Routing for the 5-PowerShell-command setup.

Can I use a DIDHub SIP trunk with Vapi / Retell / ElevenLabs / other AI voice agents?

Yes; BYOC SIP trunk works with every major AI voice platform. Bind specific DIDs to specific agents; outbound CLI must match an allocated DID.

What's the minimum commitment?

None. One DID, one month, no contract. Scale channels and add DIDs as you grow. Cancel anytime; no clawback.

Do I get one bill across all countries?

Yes, one consolidated USD bill (or EUR for EU customers, on request). Per-country line items show the regulatory entity and tax detail.

Start your global SIP trunk today

One trunk, 137+ countries, every PBX, every AI voice platform. No setup fee after KYC, no contract, cancel anytime.