VOICE THAT GROWS WITH YOU

Reliable, flexible SIP trunking made simple

Sinch SIP trunking connects your phone system to the PSTN, replacing old phone lines with one easy-to-manage platform. Choose fast, self-service setup or a fully managed solution, all backed by our global Tier-1 network.

Talk to an expert
Image for Reliable, flexible SIP trunking made simple
Join over 150,000 businesses, including 8 of the 10 largest tech companies in the world

SIMPLE & RELIABLE

Enterprise voice made easy

Sinch SIP trunking helps you modernize voice with flexible service options, predictable pricing, and consistent quality across 60+ countries. Choose the SLA, level of control, and pricing structure that match your business needs.

Choose your SLA

Choose a 99.999% SLA managed service for mission-critical voice, or a 99.95% SLA self-service model for agile growth.

One unified platform

Run all your global voice traffic on our Tier-1 network to cut down on vendors, simplify routing, and keep consistent quality worldwide.

Pricing that fits your usage

Elastic SIP offers pay-as-you-go or discounted commitments, and Enterprise SIP provides both committed and metered plans.
Image for Modern voice solutions with SIP Trunking

TOTAL CONTROL

Modern voice solutions with SIP Trunking

Use Elastic SIP Trunking for direct PSTN access or choose BYOC when you want to keep your existing carrier for supported cloud platforms.

  • Direct PSTN via Elastic SIP

  • BYOC for supported cloud integrations like Genesys

  • One global, reliable network

Image for Scale voice capacity without the headaches

GLOBAL REACH

Scale voice capacity without the headaches

Tap into 600+ operators in 60+ countries and get number coverage for 95% of the U.S. population, all through one provider.

  • Over 300 billion annual voice minutes handled

  • Geo-redundant architecture for resilience

  • Easy expansion into new markets

Image for Pay only for what you need

SMART SPEND

Pay only for what you need

Elastic SIP offers usage-based pricing, while Enterprise SIP provides steady budgets with tiered commitments. 

  • Pay only for the minutes you use

  • Keep costs predictable with tiered plans

  • Compliance and security included, no hidden fees

REAL-WORLD RESULTS

Where Sinch SIP trunking excels

Mission-critical enterprise voice

Finance, healthcare, and other sectors rely on the 99.999% SLA managed service to protect calls and keep uptime high.

Agile business communications

Fast-growing companies use APIs for instant provisioning and scale capacity on demand with the 99.95% SLA self-service model.

Contact center & support

Keep consistent call quality for agents and customers with flexible capacity for seasonal spikes or marketing campaigns.

Platform & app integration (BYOC)

Bring PSTN connectivity to UCaaS, CCaaS, or custom apps and choose the SLA that matches your customer promise.

CORE CAPABILITIES

Built-in power for enterprise voice

Global Tier-1 network

Direct connections in 60+ countries give you low latency, high quality, and coverage for 95%+ of the U.S. population.

Built-in security

TLS/SRTP encryption plus IP ACLs secure every call by default.

Integrated compliance

Native support for STIR/SHAKEN and E911 (Kari’s Law, RAY BAUM’S Act) means you’re always regulation-ready.

Universal interoperability 

Certified to work with leading IP-PBX, SBC, UCaaS, and CCaaS platforms so you can get started fast.

Actionable analytics

Get real-time CDRs and MOS scores to troubleshoot and keep call quality high with Elastic SIP Trunking.

Choice of pricing models

Choose pay-as-you-go Elastic SIP or tiered Enterprise SIP commitments to fit your budget.

Proven network scale

Over 300 billion voice minutes annually and 600+ operator interconnects give you capacity you can count on.

Answers to common SIP trunking questions 

SIP trunking connects your business phone system to the public telephone network over the internet, replacing traditional phone lines for scalable, cost-effective voice.

Yes, you can port numbers in both SIP Trunking service models, so you can keep your current business phone numbers.

All calls can be encrypted with TLS/SRTP, and our network includes built-in support for STIR/SHAKEN and E911 compliance.

Both Elastic SIP and Enterprise SIP support the same compliance standards, including HIPAA, STIR/SHAKEN, native E911, and GDPR.

Sinch owns a Tier-1 network, connects to global partners, and uniquely offers both a 99.999% SLA managed option and a 99.95% SLA self-service option, all on one unified platform.

Elastic SIP is pay-as-you-go, with per minute rates and monthly number fees. Enterprise SIP offers committed volumes with predictable, tiered pricing for cost stability.

Sinch SIP trunking is certified to work with major IP-PBX, SBC, UCaaS, and CCaaS platforms for quick and smooth setup.

Go with Elastic SIP for flexible, self-service deployments and variable traffic. Choose Enterprise SIP if you need managed service, top reliability, and stable costs.

Reliable, scalable SIP trunking for every business need

Choose between 99.999% managed SLAs or 99.95% self-service agility—all on a secure, global platform built for compliance, performance, and scale.