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SIP.US

Voice over internet protocol (VoIP) solution

Table of Contents

Is this product right for your business?

Find out with a

SIP.US - 2026 Pricing, Features, Reviews & Alternatives

All user reviews are verified by in-house moderators and provider data by our software research team. Learn more

SIP.US overview

What is SIP.US?

SIP.US is a cloud-based VoIP solution, which helps businesses manage processes for by providing session initiation protocol (SIP) trunk services to analog/digital telephone adapters and IP-PBX systems. It operates on clients’ broadband internet connection and uses tier-1 network to set up business phones for routing dialer traffic.

SIP.US’s self service control panel allows firms to purchase phone numbers, manage network services and modify billing preferences. The centralized platform offers real-time data of call records and allows users to store them in a unified database and download files in .CSV format, giving insights into communication requirements as well as business performance. Plus, direct inward dialing (DID) enables enterprises to display telephone numbers across international locations and make requests for new VoIP connections, establishing contact with prospects and clients.

SIP.US provides nomadic service operators for displaying clients’ addresses on softphones when they make emergency calls, enabling agents to geo-target customers. Integration with various open source systems and graphical user interfaces allows organizations to configure network connection settings based on business requirements.

Starting price

14.95 /
per month

Alternatives

with better value for money

Pros & Cons

Responsiveness

Stability

Assistance

SIP.US’s user interface

Ease of use rating:

4.7

(85)

SIP.US pros, cons and reviews insights

To determine these pros and cons insights, we analyzed responses from

Overall rating

Reviews sentiment

1-2(2)

3-4(16)

5(67)

What do users say about SIP.US?

Reviewers indicate SIP.US offers reliable service, cost savings, and flexible self-service options, with many appreciating the intuitive web portal and responsive email support. They find call quality strong and value the ability to scale and manage phone numbers easily, though some wish for faster porting and more robust phone support, especially after hours.

They report occasional technical issues, such as PBX compatibility or rare glitches, but say problems are resolved quickly. Some feel pricing is fair but not the lowest, and a few mention that support can be slow or less empathetic at times, particularly for urgent needs.

Select to learn more

Who uses SIP.US?

Based on 85 verified user reviews.

Company size

Small Businesses

Enterprises

Midsize Businesses

Top industries

Information Technology and Services

Telecommunications

Computer & Network Security

Retail

Others

Use cases

SIP Trunking Providers

VoIP

Small Business Phone Systems

SIP.US's key features

Most critical features, based on insights from SIP.US users:

Call routing

4.0

(4)

SIP trunking

4.0

(4)

Call monitoring

3.7

(3)

Call reporting

1.0

(1)

Real-Time monitoring

1.0

(1)

Call tracking

1.0

(1)

All SIP.US features

Features rating:

4.5

(85)

Caller id

1.0

(1)

Contact database

1.0

(1)

Call list management

(0)

Call transfer

(0)

SIP.US alternatives

SIP.US

4.7

(85)

Starting from

14.95

Per month

Free trial

Free version

Ease of Use

4.5

Features

4.5

Value for Money

4.6

Customer Support

4.6

Ringover

4.7

(823)

visit website

Starting from

Per month

Free trial

Free version

Ease of Use

4.8

Features

4.6

Value for Money

4.5

Customer Support

4.6

800.com

4.7

(301)

visit website

Starting from

149

Per month

Free trial

Free version

Ease of Use

4.7

Features

4.6

Value for Money

4.6

Customer Support

4.6

Unitel Voice

4.6

(59)

visit website

Starting from

9.99

Per month

Free trial

Free version

Ease of Use

4.4

Features

4.5

Value for Money

4.6

Customer Support

4.7

SIP.US pricing

Value for money rating:

4.6

Pricing plans

Pricing details:

Free plan

Free trial

Subscription

SIP Channels

24.95

Per month

Features included:

Includes Local and Long Distance Calls to the Us48 States and Canada (Excluding NWT) at No Additional Charge. Excludes Any Local
State or Federal Taxes and/or Fees

Inbound DID Telephone Numbers

0.00

Features included:

All Inbound Calls Include CNAM Service Delivery Included
Enhanced Dids Include the Ability to Register a Location Address for 911 Calling (Test by Dialing 933)
You Are Able to Set PSTN Forward and PSTN Backup Redirects Per DID on the Web Portal
You Are Able to SET the 15-Character Callerid Name (CNAM) Value Per DID at No Charge on the Portal

SimpleFAX™ Service

24.95

Per month

Features included:

Adapter Comes Pre-Configured and Ready for Use Out of the Box
All Faxes Sent and Received Over Traditional Copper Lines (Pris)
High Reliability – No T.38 or Fax Over IP Problems!
Web Portal to View All Faxes Sent and Received

Fax-to-Email

14.95

Per month

Features included:

Change Your Fax Callerid Number Directly in Our Portal
Incoming Faxes Are Sent to Your Registered Email Address as a PDF
No Faxing Over IP – All Faxes Sent and Received Over Traditional TDM Circuits (PRI Lines)
Send Document Attachments From Your Registered Email Address as Outbound Faxes
View a History of Your Sent and Received Faxes on Our Web Portal

Business SMS

Per month

Features included:

10000 Message Plan Can Be Shared Across Multiple Dids. Other Plans Are Per-DID Only
Billing Is Calculated on a Per-Message Basis and Billed Once a Month on Your Rebill Day as a Separate Line Item
But Not All DID Telephone Numbers on SIP.US Can Be Enabled for SMS-to-Email Functionality
Incoming SMS Messages to the Enabled DID Will Be Sent to the Email Address(S) You Specify. You Can Also 'Send' SMS Messages via Email Using This Service. On the Management Page
Most
When Enabled
You Can Enable SMS Functionality on Your Dids That Support SMS as Well as Specifying the Email Address(S) Where the Messages Will Be Sent. You Can Also View Usage on Each SMS-Enabled DID

User opinions about SIP.US price and value

Value for money rating:

4.6

(85)

To see what individual users think of SIP.US's price and value, check out the review snippets below.

“The service level has been outstanding, availability being something we take for granted. Their customer service and support are refreshingly effective, which can be rare with traditional telecom.”

Greg K.

IT Manager

“Overall SIP.us has been great. I continue to do business with them because of the quality of the service.”

stefan b.

IT Director

SIP.US integrations (3)

Top integrations

3CX

VICIdial

Asterisk

SIP.US customer support

What do users say about SIP.US customer support?

Customer support rating:

4.6

We analyzed 29 verified user reviews to identify positive and negative aspects of SIP.US customer support.

Widespread user sentiment highlights SIP.US support as fast, knowledgeable, and highly effective in resolving issues and porting numbers.

A limited number of users report slow response times, unhelpful attitudes, or difficulty accessing tech support when needed.

Support options

Phone support

Email/help desk

Chat

Faqs/forum

Knowledge base

Training options

Documentation

To see what individual users say about SIP.US's customer support, check out the review snippets below.

“The porting process was seamless, the customer service communication was effective, and the after cutover support has been stellar.”

Greg K.

IT Manager

“The few times I've had a question, or needed assistance, the customer service people are on the ball, and respond with incredible speed, especially when compared to our previous SIP provider.”

Tim D.

Systems Administrator

“My lack of a great rating focuses on the difficulty it took to get tech support to work with us when we needed it and the lack of self-service options available online.”

Ian M.

Network Engineer