Products

SIP Free

Simple Termination, STIR/SHAKEN managed so you dont have to

Overview
Get Started - It's Free

Simple SIP Trunking with free termination to North American Toll-Free destination. Supporting ULAW, G729, G722 and T.38 where available.

Please enter a valid email
Create your account

Sign up and confirm your email by following the sign-up wizard.

Authorize your hosts

Enable each of your hosts by authorizing their IP address, then add to your routes.

Authorize your DIDs

Submit your phone numbers in bulk or integrate via API to add additional layer of call security.

Let the calls begin

Enjoy free SIP calls with advanced call detail reporting from the partner portal.

Features
Plug & Play SIP Termination
Free Toll-Free Termination

Unlimited Toll-Free termination regardless of subscription plan.

STIR/SHAKEN Certified

All US terminations include managed STIR/SHAKEN automatically, by validating DIDs submitted to our Trust profiles.

Simple Competitive Pricing

Fixed termination rates make managing cost of usage easy.

Robocall Mitigation

Advanced alerting can be set as brand defaults or on a phone number level.

Pricing
Smart plans, auto volume discounted
Preview Smart CNAM subscribers can request early access.
Annually
Monthly
Free
$
0
Per Month
Starter
$
36
Per Month
Most Popular
Competitor
$
800
Per Month
Provider
$
2800
Per Month
Carrier
Call
for pricing
FEATURES
Included USA (48 States) & Canada Local Minutes per month
5010,000250,0001,000,0002,000,000+
Included USA & Canada Toll-Free Minutes per month
UnlimitedUnlimitedUnlimitedUnlimitedUnlimited
STIR/SHAKEN Certified (US Only)
Robocall Mitigation Tools
Advanced Alerting
Intelligent Anylytics & Mapping
EXTRAS
Additional usage
Capped$0.0045 / Min$0.0040 / Min$0.0035 / MinCall for pricing
Rating granularity
60 Second60 Second30 Second6 Second6 Second
Support SLA
CommunityCommunityWithin 8 hoursWithin 4 hoursWithin 2 hours
Integration specialist
Regional SBC proximity
FAQs
Frequently Asked Questions
Why is this product free?

As a data science through telecom company, we offer products that drive data into our AI/ML learning models to help us achieve our primary goals, making a safer connected tomorrow.

How does caller driven data help SIPSTACK?

Learning more about traffic patterns provide our AI/ML added insight into our dynamic call rating system when providing a call score.

Do my calls have to originate from US or Canada?

No, you can add SIP Free in your product and originate calls from everywhere as long as the original caller ID number has been authorized on your account. Please see our Terms of Service, Acceptable Use Policy for more details.

Is there an API to automate DID authorization?

Yes, from the SIP Free section of the partner portal, links to our API reference pages will help you integrate adding, modifying and removing phone numbers / DID's from your authorized pool.

Is there a concurrent call limit?

No, while there is no concurrent call limit, there are call limits per minute. Please see our resource center for call limits for more details.

Is there a call duration limit?

Yes, while these are usually never required, we terminate calls at the 8 hour mark. This is really for stale channels or calls to help prevent incorrect call lengths on a call disconnect without proper SIP completions.

Get Started

Smarter SIP Termination

Volume discounted and STIR/SHAKEN managed

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