SIP Trunking Flexible, Scalable solution in minutes!

SIP trunk Provider compatible with leading VoIP systems and SIP Devices.

Setup Free SIP Trunk FREE SIP trunk Quote

Why SIP Trunking?

As a leading SIP Trunk provider, DIDforSale offers an efficient and cost-effective solution for businesses looking to replace traditional phone lines. Our low-cost SIP Trunking services help you save thousands on local and long-distance calls while enabling a higher standard of service that is both flexible and highly scalable. Choose DIDforSale as your SIP Trunk provider to enjoy seamless communication, improved efficiency, and significant cost savings.

SIP Trunking Benefits:

Our SIP Trunk works with any SIP enabled PBX or SIP Trunking switch.
SIP Trunking eliminates the need to invest in expensive TDM equipments.
Reduce monthly expenses with SIP Trunk Service
- Low monthly rates, per channel or per minute.
- Pay only for SIP Trunks you use.
- Single internet connection works for data and voice.
Only SIP Trunk provider you need for multiple locations.
Redundancy with multiple SIP Trunking Service providers.
Flexible termination of calls to preferred SIP Trunk providers.

What's The Difference Between
Hosted PBX & SIP Trunking?

Hosted PBX is a fully managed cloud based phone system,
while SIP Trunking connects a business's on-premises PBX to the internet for voice connectivity using preferred SIP Trunk provider.

DIDforSale SIP Trunking Features

Scalable

Add and remove SIP Trunks per your business requirement on the fly. There are no commitments!

Easy Integration

Have a PBX system? No worries our system allows you to integrate SIP Trunks with your PBX.

Codec Support

Get flexibility and quality. We support G.711, G.729, u-Law, a-Law Codecs for your SIP Trunks

Number Porting

Bring your phone numbers when changing your phone service provider. We port your existing number.

Phone Number

With Phone Numbers from 13,000+ rate centers our SIP trunking services have largest coverage in USA & Canada

Tollfree Number

Get access to numbers from US & Canada. Unlimited simultaneous calls at low per minute SIP Trunks.

E911

Phone Numbers from DIDforSale SIP Trunking support E911 (enhanced 911) service.

CNAM

Our Phone Numbers are equipped with CNAM feature to pass Caller ID Name.

Account Management

Our web portal enables easy management for your SIP Trunks, Phone Numbers, CDR’s etc.

Compatible PBXs

Follow our clear, step-by-step guide to connect your 3CX PBX system with our SIP Trunk effortlessly.

Allworx VoIP communication platform helps SMBs create a customized business phone system.

Unlock the power of Asterisk and elevate your communication capabilities with our SIP trunking service.

Enhancing Communication: The Path to Unified Communication with DIDforSale SIP Trunk Configuration for Cisco UCM.

DIDforSale SIP Trunks and FreePBX: A Seamless Integration for Enhanced Communication.

Setting Up FreeSWITCH with Certified DIDforSale SIP Trunks - Your Seamless Connection Solution.

FusionPBX, built on FreeSwitch, serves as a versatile platform for PBX, VoIP and more.

Experience the power of our SIP Trunks for seamless and hassle-free integration with Goautodial.

GrandStream Devices are tested and certified for Compatibility with DIDForSale SIP Trunking.

HoduSoft's PBX enhances business voice communication

Using Microsoft Teams? Discover Our SIP Trunks for Seamlessly Enhanced Integration, Elevating Efficiency and Connectivity.

NEC PBX, offers advanced telephony features, scalability, and reliability.

PBXinaFlash: High-performance, upgradable Asterisk PBXs.

Global leader in unified communication solutions with a comprehensive audio and video conferencing portfolio.

Zycoo CooVox IPPBX is optimized and tested for seamless integration with DIDforSale SIP Trunk.

Simple SIP Trunk Platform

Our easy to use web portal gives full control to our clients to configure, manage, and scale your SIP Trunks per their business requirement.

Simple SIP Trunk Pricing

Choose a plan that fits your business needs. Our metered or flat rate SIP Trunk plans are designed to provide you with most flexible options and there is no contract.

Flexible & Reliable

With 99.99% uptime our SIP Trunking services are extremely reliable and gives to flexibility to scale on the fly.

Unrivaled US Coverage with a SIP Trunk provider that can get you local phone numbers from 13,000+ Rate Centers, ensuring your nationwide connectivity.

Choosing DIDForSale as your SIP Provider!

Configure Your SIP Trunks.

Our SIP Trunks are compatible with most SIP based PBX, Business Phone Systems and Devices.

1000’s of Business have found DIDForSale as the Best SIP Trunk provider. It’s essential to note that SIP Trunk compatibility can depend on various factors, including the specific configuration of your PBX or device and the SIP trunk settings provided by DIDForSale. Therefore, it’s advisable to consult with DIDForSale’s technical support or documentation to ensure proper configuration and compatibility with your particular equipment or software.

See Documentation

SIP Trunks: your stepping stone to higher productivity

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SIP Trunk: Frequently Asked Questions

How does SIP trunking work?

SIP trunking works by using an internet connection to establish a connection between your PBX and your SIP Trunk Provider. Instead of traditional phone lines, it uses SIP, a signaling protocol, to set up and manage communication sessions, including voice, video, and instant messaging. SIP Trunk provider connects your call to other SIP Providers or PSTN network.

I am a heavy user. Looking for unlimited SIP Trunking Providers for call center, call forwarding or calling card type of business?

DFS is one of very few SIP Trunk providers that allow call center and calling card traffic. Our SIP Trunk service allow unlimited inbound minutes on our SIP trunks. You can receive as many calls you want. However for termination our unlimited SIP trunks are only for normal office use. If you want to use for call center type of traffic, we do have low per minute termination.

Do you provide support in setting up SIP Trunk service on my system?

Most SIP Trunk providers offer documentations to setup SIP Trunk on your PBX. But we go one step forward, when you purchase SIP trunking services from DIDForSale you get free technical support in configuring the system and setting up a dial plan. We want you to have the best experience with VoIP technology, so we can even provide free consultancy on new solutions or security you are dealing with.

You offer wholesale low cost SIP Trunking services. Is there any minimum commitment to get wholesale SIP trunk pricing?

No, there is no minimum commitment! With the use of automation and technology, we have automated everything. That way we save lot on hiring expensive sales and support staff and automation allow us to sell SIP Trunking services to every one, big or small. In your account portal you can do everything on your own, from purchasing a SIP Trunk, buying local phone number to routing and configuration.

Do I need special equipment for SIP trunking?

You'll typically need a compatible PBX or VoIP system and an internet connection. Some businesses may require a Session Border Controller (SBC) to manage and secure the connection between their network and the SIP Trunk provider.

What Customer Say

Discover what our satisfied customers are sharing!

David Brian Moore

DIDforSale support provided excellent technical support and a very timely response to my support issue. The communication and explanations of how and when the issues would be resolve were clear and concise. For this issue I could not have been more pleased with the resolution. Thank you DIDforSale(Sam!)

Matt H.

Anna is always on top of assisting our needs. We have a pretty complicated setup and when Anna can't immediately figure out she is quick to bring someone in to assist. Great prices on sip accounts. Saved us so much money going through DIDforsale. Thank you everyone at DIDforsale for the great service you have provided.

Mike Cochenour

With technology always changing so rapidly its hard for any provider to keep up with the configuration guide for each product. The technical support staff worked with me on my Grandstream USM-PBX and was able to tweek my settings to get my calls working inbound and outbound quickly. I appreciate the extra mile Anna went.

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